[Fix] Fix conflicts ._.

2026-01-19 00:37:25 +01:00 · 2020-04-07 14:53:19 +02:00
parent 3fac1fdf78 42fa0e7fbc
commit aea963dac0
194 changed files with 4774 additions and 1958 deletions
--- a/.github/workflows/ci-workflow.yml
+++ b/.github/workflows/ci-workflow.yml
@@ -2,18 +2,20 @@ name: Continuous integration
 on: [pull_request, push]

 jobs:
-  build-simulator-android:
+  android:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1
        with:
          submodules: true
      - run: make -j2 PLATFORM=simulator TARGET=android
+      - run: make -j2 PLATFORM=simulator TARGET=android epsilon.official.apk
+      - run: make -j2 PLATFORM=simulator TARGET=android test.apk
      - uses: actions/upload-artifact@master
        with:
-          name: epsilon-simulator-android.apk
-          path: output/release/simulator/android/app/outputs/apk/release/android-release-unsigned.apk
-  build-device-n0100:
+          name: epsilon-android.apk
+          path: output/release/simulator/android/epsilon.apk
+  n0100:
    runs-on: ubuntu-latest
    steps:
      - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
@@ -27,12 +29,12 @@ jobs:
      - run: make -j2 MODEL=n0100 epsilon.onboarding.beta.dfu
      - run: make -j2 MODEL=n0100 flasher.light.dfu
      - run: make -j2 MODEL=n0100 flasher.verbose.dfu
+      - run: make -j2 MODEL=n0100 test.elf
      - uses: actions/upload-artifact@master
        with:
-          name: epsilon-device-n0100.dfu
+          name: epsilon-n0100.dfu
          path: output/release/device/n0100/epsilon.dfu
-      - run: make -j2 MODEL=n0100 test.elf
-  build-device-n0110:
+  n0110:
    runs-on: ubuntu-latest
    steps:
      - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
@@ -48,12 +50,12 @@ jobs:
      - run: make -j2 flasher.verbose.dfu
      - run: make -j2 bench.ram.dfu
      - run: make -j2 bench.flash.dfu
+      - run: make -j2 test.elf
      - uses: actions/upload-artifact@master
        with:
-          name: epsilon-device-n0110.dfu
+          name: epsilon-n0110.dfu
          path: output/release/device/n0110/epsilon.dfu
-      - run: make -j2 test.elf
-  build-simulator-web:
+  web:
    runs-on: ubuntu-latest
    steps:
      - uses: numworks/setup-emscripten@v1
@@ -65,10 +67,9 @@ jobs:
      - run: make -j2 PLATFORM=simulator TARGET=web
      - uses: actions/upload-artifact@master
        with:
-          name: epsilon-simulator-web.zip
+          name: epsilon-web.zip
          path: output/release/simulator/web/epsilon.zip
-      - run: make -j2 PLATFORM=simulator TARGET=web test.headless.js
-  build-simulator-linux:
+  linux:
    runs-on: ubuntu-latest
    steps:
      - run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
@@ -76,8 +77,11 @@ jobs:
        with:
          submodules: true
      - run: make -j2 PLATFORM=simulator
+      - run: make -j2 PLATFORM=simulator epsilon.official.bin
+      - run: make -j2 PLATFORM=simulator test.headless.bin
+      - run: output/release/simulator/linux/test.headless.bin
      - uses: actions/upload-artifact@master
        with:
-          name: epsilon-simulator-linux.bin
+          name: epsilon-linux.bin
          path: output/release/simulator/linux/epsilon.bin
      - run: make -j2 PLATFORM=simulator test.headless.bin
--- a/.github/workflows/metrics-workflow.yml
+++ b/.github/workflows/metrics-workflow.yml
@@ -0,0 +1,36 @@
+name: Metrics
+on: [pull_request]
+
+jobs:
+  binary-size:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install dependencies
+        run: sudo apt-get install build-essential imagemagick libfreetype6-dev libjpeg-dev libpng-dev pkg-config
+      - name: Install ARM toolchain
+        uses: numworks/setup-arm-toolchain@v1
+      - name: Checkout PR base
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.base.sha }}
+          path: base
+      - name: Build base
+        run: make -j2 -C base epsilon.elf
+      - name: Checkout PR head
+        uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          path: head
+      - name: Build head
+        run: make -j2 -C head epsilon.elf
+      - name: Retrieve binary size analysis
+        id: binary_size
+        run: echo "::set-output name=table::$(python3 head/build/metrics/binary_size.py base/output/release/device/n0110/epsilon.elf head/output/release/device/n0110/epsilon.elf --labels Base Head --escape)"
+      - name: Prepare comment auth
+        run: echo "::set-env name=GITHUB_TOKEN::$(echo ZGExNWM1YzNlMjVkMWU5ZGFmOWQyY2UxMmRhYjJiN2ZhMWM4ODVhMA== | base64 --decode)"
+      - name: Add comment
+        uses: actions/github@v1.0.0
+        env:
+          GITHUB_TOKEN: ${{ env.GITHUB_TOKEN }}
+        with:
+          args: comment ${{ steps.binary_size.outputs.table }}
--- a/52
+++ b/52
@@ -1,4 +1,15 @@
+# Disable default Make rules
+.SUFFIXES:
+
+# Define the default recipe
+default:
+
 include build/config.mak
+include build/defaults.mak
+include build/platform.$(PLATFORM).mak
+include build/toolchain.$(TOOLCHAIN).mak
+include build/variants.mak
+include build/helpers.mk

 ifeq (${MODEL}, n0110)
  apps_list = ${EPSILON_APPS}
@@ -10,36 +21,6 @@ ifdef FORCE_EXTERNAL
  apps_list = ${EPSILON_APPS}
 endif

-# Disable default Make rules
-.SUFFIXES:
-
-object_for = $(addprefix $(BUILD_DIR)/,$(addsuffix .o,$(basename $(1))))
-
-# Define the default recipe
-
-default:
-
-# Define a standard rule helper
-# If passed a last parameter value of with_local_version, we also define an
-# extra rule that can build source files within the $(BUILD_DIR). This is useful
-# for rules that can be applied for intermediate objects (for example, when
-# going .png -> .cpp -> .o).
-
-define rule_label
-@ echo "$(shell printf "%-8s" $(strip $(1)))$(@:$(BUILD_DIR)/%=%)"
-endef
-
-define rule_for
-ifeq ($(strip $(5)),with_local_version)
-$(addprefix $$(BUILD_DIR)/,$(strip $(2))): $(addprefix $$(BUILD_DIR)/,$(strip $(3))) | $(if $(findstring official,${MAKECMDGOALS}),official_authorization)
-	@ echo "$(shell printf "%-8s" $(strip $(1)))$$(@:$$(BUILD_DIR)/%=%)"
-	$(Q) $(4)
-endif
-$(addprefix $$(BUILD_DIR)/,$(strip $(2))): $(strip $(3)) | $$$$(@D)/. $(if $(findstring official,${MAKECMDGOALS}),official_authorization)
-	@ echo "$(shell printf "%-8s" $(strip $(1)))$$(@:$$(BUILD_DIR)/%=%)"
-	$(Q) $(4)
-endef
-
 .PHONY: info
 info:
 	@echo "EPSILON_VERSION = $(EPSILON_VERSION)"
@@ -107,7 +88,9 @@ $(BUILD_DIR)%/.:
 # Each sub-Makefile can either add sources to $(%_src) variables or define a
 # new executable target. The $(%_src) variables list the sources that can be
 # built and linked to executables being generated.
-
+ifndef USE_LIBA
+  $(error platform.mak should define USE_LIBA)
+endif
 ifeq ($(USE_LIBA),0)
 include liba/Makefile.bridge
 else
@@ -126,10 +109,10 @@ include build/struct_layout/Makefile
 include build/scenario/Makefile
 include quiz/Makefile # Quiz needs to be included at the end

-all_src = $(apps_all_src) $(escher_src) $(ion_all_src) $(kandinsky_src) $(liba_src) $(libaxx_src) $(poincare_src) $(python_src) $(runner_src) $(ion_target_device_flasher_light_src) $(ion_target_device_flasher_verbose_src) $(ion_target_device_bench_src) $(tests_src)
+all_src = $(apps_src) $(escher_src) $(ion_src) $(kandinsky_src) $(liba_src) $(libaxx_src) $(poincare_src) $(python_src) $(runner_src) $(ion_device_flasher_src) $(ion_device_bench_src) $(tests_src)
 # Make palette.h a dep for every source-file.
 # This ensures that the theming engine works correctly.
-$(call object_for,$(all_app_src)): $(BUILD_DIR)/escher/palette.h
+$(call object_for,$(apps_src) $(tests_src)): $(BUILD_DIR)/escher/palette.h

 all_objs = $(call object_for,$(all_src))
 .SECONDARY: $(all_objs)
@@ -144,8 +127,7 @@ all_objs = $(call object_for,$(all_src))
 include build/targets.mak

 # Fill in the default recipe
-DEFAULT ?= $(BUILD_DIR)/epsilon.$(EXE)
-default: $(DEFAULT)
+default: $(firstword $(HANDY_TARGETS)).$(firstword $(HANDY_TARGETS_EXTENSIONS))

 # Load standard build rules
 include build/rules.mk
--- a/apps/Makefile
+++ b/apps/Makefile
@@ -10,8 +10,14 @@ apps =
 # (path to the apps header).
 $(foreach i,${apps_list},${eval include apps/$(i)/Makefile})

-app_src += $(addprefix apps/,\
+apps_src += $(addprefix apps/,\
  apps_container.cpp \
+  apps_container_launch_default.cpp:-onboarding \
+  apps_container_launch_on_boarding.cpp:+onboarding \
+  apps_container_prompt_beta.cpp:+beta \
+  apps_container_prompt_none.cpp:-beta \
+  apps_container_prompt_none.cpp:-update \
+  apps_container_prompt_update.cpp:+update \
  apps_container_storage.cpp \
  apps_window.cpp \
  backlight_dimming_timer.cpp \
@@ -19,6 +25,8 @@ app_src += $(addprefix apps/,\
  battery_view.cpp \
  empty_battery_window.cpp \
  exam_pop_up_controller.cpp \
+  exam_mode_configuration_official.cpp:+official \
+  exam_mode_configuration_non_official.cpp:-official \
  global_preferences.cpp \
  i18n.py \
  lock_view.cpp \
@@ -32,14 +40,6 @@ app_src += $(addprefix apps/,\
 )

 tests_src += apps/exam_mode_configuration_non_official.cpp
-apps_official += apps/exam_mode_configuration_non_official.cpp
-apps_non_official += apps/exam_mode_configuration_non_official.cpp
-
-apps_launch_on_boarding_src += apps/apps_container_launch_on_boarding.cpp
-apps_launch_default_src += apps/apps_container_launch_default.cpp
-apps_prompt_none_src += apps/apps_container_prompt_none.cpp
-apps_prompt_beta_src += apps/apps_container_prompt_beta.cpp
-apps_prompt_update_src += apps/apps_container_prompt_update.cpp

 snapshots_declaration = $(foreach i,$(apps),$(i)::Snapshot m_snapshot$(subst :,,$(i))Snapshot;)
 apps_declaration = $(foreach i,$(apps),$(i) m_$(subst :,,$(i));)
@@ -83,7 +83,8 @@ $(eval $(call rule_for, \
  I18N, \
  apps/i18n.cpp, \
  $(i18n_files), \
-  $$(PYTHON) apps/i18n.py --header $$(subst .cpp,.h,$$@) --implementation $$@ --locales $$(EPSILON_I18N) --files $$^ \
+  $$(PYTHON) apps/i18n.py --codepoints $(code_points) --header $$(subst .cpp,.h,$$@) --implementation $$@ --locales $$(EPSILON_I18N) --files $$^, \
+  global \
 ))


@@ -94,36 +95,19 @@ $(BUILD_DIR)/apps/i18n.h: $(BUILD_DIR)/apps/i18n.cpp

 $(eval $(call depends_on_image,apps/title_bar_view.cpp,apps/exam_icon.png))

-all_app_src = $(app_src)(apps_launch_on_boarding_src) $(apps_launch_default_src) $(apps_prompt_none_src) $(apps_prompt_update_src) $(apps_prompt_beta_src) $(apps_official) $(apps_non_official) $(tests_src)
+$(call object_for,$(apps_src) $(tests_src)): $(BUILD_DIR)/apps/i18n.h
+$(call object_for,$(apps_src) $(tests_src)): $(BUILD_DIR)/python/port/genhdr/qstrdefs.generated.h

-$(call object_for,$(all_app_src)): $(BUILD_DIR)/apps/i18n.h
-$(call object_for,$(all_app_src)): $(BUILD_DIR)/python/port/genhdr/qstrdefs.generated.h
-
-apps_tests_src = $(app_calculation_test_src) $(app_probability_test_src) $(app_regression_test_src) $(app_sequence_test_src) $(app_shared_test_src) $(app_statistics_test_src) $(app_settings_test_src) $(app_solver_test_src)
+apps_tests_src = $(app_calculation_test_src) $(app_code_test_src) $(app_probability_test_src) $(app_regression_test_src) $(app_sequence_test_src) $(app_shared_test_src) $(app_statistics_test_src) $(app_settings_test_src) $(app_solver_test_src)

 apps_tests_src += $(addprefix apps/,\
  global_preferences.cpp \
 )

-
 $(foreach img,$(image_list), $(eval $(call rule_for, \
  ICON, \
  $(img), \
  $(addprefix themes/themes/, $(addsuffix .json, $(OMEGA_THEME))), \
-  $$(PYTHON) themes/themes_manager.py -i $(OMEGA_THEME) $$@ $(BUILD_DIR)/ \
+  $$(PYTHON) themes/themes_manager.py -i $(OMEGA_THEME) $$@ $(BUILD_DIR)/, \
+  global \
 )))
-
-# Configure variants
-apps_all_src = $(app_src)
-apps_all_src += $(apps_official) $(apps_non_official)
-apps_all_src += $(apps_launch_default_src) $(apps_launch_on_boarding_src)
-apps_all_src += $(apps_prompt_none_src) $(apps_prompt_update_src) $(apps_prompt_beta_src)
-
-apps_default_src = $(app_src) $(apps_non_official) $(apps_launch_default_src) $(apps_prompt_none_src)
-apps_official_default_src = $(app_src) $(apps_official) $(apps_launch_default_src) $(apps_prompt_none_src)
-apps_onboarding_src = $(app_src) $(apps_non_official) $(apps_launch_on_boarding_src) $(apps_prompt_none_src)
-apps_official_onboarding_src = $(app_src) $(apps_official) $(apps_launch_on_boarding_src) $(apps_prompt_none_src)
-apps_onboarding_update_src = $(app_src) $(apps_non_official) $(apps_launch_on_boarding_src) $(apps_prompt_update_src)
-apps_official_onboarding_update_src = $(app_src) $(apps_official) $(apps_launch_on_boarding_src) $(apps_prompt_update_src)
-apps_onboarding_beta_src = $(app_src) $(apps_non_official) $(apps_launch_on_boarding_src) $(apps_prompt_beta_src)
-apps_official_onboarding_beta_src = $(app_src) $(apps_official) $(apps_launch_on_boarding_src) $(apps_prompt_beta_src)
--- a/apps/atom
+++ b/apps/atom
--- a/apps/calculation/Makefile
+++ b/apps/calculation/Makefile
@@ -30,7 +30,7 @@ app_calculation_src = $(addprefix apps/calculation/,\
 )

 app_calculation_src += $(app_calculation_test_src)
-app_src += $(app_calculation_src)
+apps_src += $(app_calculation_src)

 i18n_files += $(addprefix apps/calculation/,\
  base.de.i18n\
--- a/apps/calculation/additional_outputs/complex_graph_cell.cpp
+++ b/apps/calculation/additional_outputs/complex_graph_cell.cpp
@@ -71,7 +71,7 @@ void ComplexGraphView::drawRect(KDContext * ctx, KDRect rect) const {
  // 're(z)' label
  drawLabel(ctx, rect, real, 0.0f, "re(z)", Palette::Red, CurveView::RelativePosition::None, imag >= 0.0f ? CurveView::RelativePosition::Before : CurveView::RelativePosition::After);
  // 'im(z)' label
-  drawLabel(ctx, rect, 0.0f, imag, "im(θ)", Palette::Red, real >= 0.0f ? CurveView::RelativePosition::Before : CurveView::RelativePosition::After, CurveView::RelativePosition::None);
+  drawLabel(ctx, rect, 0.0f, imag, "im(z)", Palette::Red, real >= 0.0f ? CurveView::RelativePosition::Before : CurveView::RelativePosition::After, CurveView::RelativePosition::None);
  // '|z|' label, the relative horizontal position of this label depends on the quadrant
  CurveView::RelativePosition verticalPosition = real*imag < 0.0f ? CurveView::RelativePosition::Before : CurveView::RelativePosition::After;
  if (real == 0.0f) {
--- a/apps/calculation/history_view_cell.cpp
+++ b/apps/calculation/history_view_cell.cpp
@@ -30,6 +30,7 @@ void HistoryViewCellDataSource::setSelectedSubviewType(SubviewType subviewType,
  if (selectedCell) {
    selectedCell->reloadSubviewHighlight();
    selectedCell->cellDidSelectSubview(subviewType, previousSubviewType);
+    Container::activeApp()->setFirstResponder(selectedCell);
  }
  if (previouslySelectedCell) {
    previouslySelectedCell->cellDidSelectSubview(SubviewType::Input);
--- a/apps/calculation/selectable_table_view.cpp
+++ b/apps/calculation/selectable_table_view.cpp
@@ -12,12 +12,12 @@ CalculationSelectableTableView::CalculationSelectableTableView(Responder * paren
 }

 void CalculationSelectableTableView::scrollToCell(int i, int j) {
-  ::SelectableTableView::scrollToCell(i, j);
  if (m_contentView.bounds().height() < bounds().height()) {
    setTopMargin(bounds().height() - m_contentView.bounds().height());
  } else {
    setTopMargin(0);
  }
+  ::SelectableTableView::scrollToCell(i, j);
  ScrollView::layoutSubviews();
  if (m_contentView.bounds().height() - contentOffset().y() < bounds().height()) {
    KDCoordinate contentOffsetX = contentOffset().x();
--- a/apps/code/Makefile
+++ b/apps/code/Makefile
@@ -1,6 +1,10 @@
 apps += Code::App
 app_headers += apps/code/app.h

+app_code_test_src = $(addprefix apps/code/,\
+  script_template.cpp \
+)
+
 app_code_src = $(addprefix apps/code/,\
  app.cpp \
  console_controller.cpp \
@@ -19,11 +23,11 @@ app_code_src = $(addprefix apps/code/,\
  script_node_cell.cpp \
  script_parameter_controller.cpp \
  script_store.cpp \
-  script_template.cpp \
  variable_box_controller.cpp \
 )

-app_src += $(app_code_src)
+app_code_src += $(app_code_test_src)
+apps_src += $(app_code_src)

 i18n_files += $(addprefix apps/code/,\
  base.de.i18n\
--- a/apps/code/catalog.de.i18n
+++ b/apps/code/catalog.de.i18n
@@ -139,10 +139,10 @@ PythonRadians = "Convert x from degrees to radians"
 PythonRandint = "Random integer in [a,b]"
 PythonRandom = "Floating point number in [0,1["
 PythonRandomFunction = "random module function prefix"
-PythonRandrange = "Random number in range(start, stop)"
+PythonRandrange = "Random number in range(start,stop)"
 PythonRangeStartStop = "List from start to stop-1"
 PythonRangeStop = "List from 0 to stop-1"
-PythonRect = "z in cartesian coordinates"
+PythonRect = "Convert to cartesian coordinates"
 PythonRemove = "Remove the first occurrence of x"
 PythonReverse = "Reverse the elements of the list"
 PythonRound = "Round to n digits"
--- a/apps/code/catalog.en.i18n
+++ b/apps/code/catalog.en.i18n
@@ -139,10 +139,10 @@ PythonRadians = "Convert x from degrees to radians"
 PythonRandint = "Random integer in [a,b]"
 PythonRandom = "Floating point number in [0,1["
 PythonRandomFunction = "random module function prefix"
-PythonRandrange = "Random number in range(start, stop)"
+PythonRandrange = "Random number in range(start,stop)"
 PythonRangeStartStop = "List from start to stop-1"
 PythonRangeStop = "List from 0 to stop-1"
-PythonRect = "z in cartesian coordinates"
+PythonRect = "Convert to cartesian coordinates"
 PythonRemove = "Remove the first occurrence of x"
 PythonReverse = "Reverse the elements of the list"
 PythonRound = "Round to n digits"
--- a/apps/code/catalog.es.i18n
+++ b/apps/code/catalog.es.i18n
@@ -139,10 +139,10 @@ PythonRadians = "Convert x from degrees to radians"
 PythonRandint = "Random integer in [a,b]"
 PythonRandom = "Floating point number in [0,1["
 PythonRandomFunction = "random module function prefix"
-PythonRandrange = "Random number in range(start, stop)"
+PythonRandrange = "Random number in range(start,stop)"
 PythonRangeStartStop = "List from start to stop-1"
 PythonRangeStop = "List from 0 to stop-1"
-PythonRect = "z in cartesian coordinates"
+PythonRect = "Convert to cartesian coordinates"
 PythonRemove = "Remove the first occurrence of x"
 PythonReverse = "Reverse the elements of the list"
 PythonRound = "Round to n digits"
--- a/apps/code/catalog.fr.i18n
+++ b/apps/code/catalog.fr.i18n
@@ -139,7 +139,7 @@ PythonRadians = "Conversion de degrés en radians"
 PythonRandint = "Entier aléatoire dans [a,b]"
 PythonRandom = "Nombre décimal dans [0,1["
 PythonRandomFunction = "Préfixe fonction du module random"
-PythonRandrange = "Nombre dans range(start, stop)"
+PythonRandrange = "Nombre dans range(start,stop)"
 PythonRangeStartStop = "Liste de start à stop-1"
 PythonRangeStop = "Liste de 0 à stop-1"
 PythonRect = "Conversion en algébrique"
--- a/apps/code/catalog.pt.i18n
+++ b/apps/code/catalog.pt.i18n
@@ -139,10 +139,10 @@ PythonRadians = "Convert x from degrees to radians"
 PythonRandint = "Random integer in [a,b]"
 PythonRandom = "Floating point number in [0,1["
 PythonRandomFunction = "random module function prefix"
-PythonRandrange = "Random number in range(start, stop)"
+PythonRandrange = "Random number in range(start,stop)"
 PythonRangeStartStop = "List from start to stop-1"
 PythonRangeStop = "List from 0 to stop-1"
-PythonRect = "z in cartesian coordinates"
+PythonRect = "Convert to cartesian coordinates"
 PythonRemove = "Remove the first occurrence of x"
 PythonReverse = "Reverse the elements of the list"
 PythonRound = "Round to n digits"
--- a/apps/code/catalog.universal.i18n
+++ b/apps/code/catalog.universal.i18n
@@ -165,17 +165,17 @@ PythonCommandRandint = "randint(a,b)"
 PythonCommandRandom = "random()"
 PythonCommandRandomFunction = "random.function"
 PythonCommandRandomFunctionWithoutArg = "random.\x11"
-PythonCommandRandrange = "randrange(start, stop)"
-PythonCommandRangeStartStop = "range(start, stop)"
+PythonCommandRandrange = "randrange(start,stop)"
+PythonCommandRangeStartStop = "range(start,stop)"
 PythonCommandRangeStop = "range(stop)"
 PythonCommandReal = "z.real"
 PythonCommandRealWithoutArg = ".real"
-PythonCommandRect = "rect(r, arg)"
+PythonCommandRect = "rect(r,arg)"
 PythonCommandRemove = "list.remove(x)"
 PythonCommandRemoveWithoutArg = ".remove(\x11)"
 PythonCommandReverse = "list.reverse()"
 PythonCommandReverseWithoutArg = ".reverse()"
-PythonCommandRound = "round(x, n)"
+PythonCommandRound = "round(x,n)"
 PythonCommandScatter = "scatter(x,y)"
 PythonCommandSeed = "seed(x)"
 PythonCommandSetPixel = "set_pixel(x,y,color)"
@@ -227,7 +227,7 @@ PythonTurtleCommandRed = "'red'"
 PythonTurtleCommandReset = "reset()"
 PythonTurtleCommandRight = "right(a)"
 PythonTurtleCommandSetheading = "setheading(a)"
-PythonTurtleCommandSetposition = "setposition(x, [y])"
+PythonTurtleCommandSetposition = "setposition(x,[y])"
 PythonTurtleCommandShowturtle = "showturtle()"
 PythonTurtleCommandSpeed = "speed(x)"
 PythonTurtleCommandWhite = "'white'"
--- a/apps/code/script_store.cpp
+++ b/apps/code/script_store.cpp
@@ -36,6 +36,12 @@ bool ScriptStore::isFull() {

 void ScriptStore::scanScriptsForFunctionsAndVariables(void * context, ScanCallback storeFunction, ScanCallback storeVariable) {
  for (int scriptIndex = 0; scriptIndex < numberOfScripts(); scriptIndex++) {
+    
+    //Don't scan not loaded script
+    if (!scriptAtIndex(scriptIndex).importationStatus()){
+      continue;
+    }
+
    // Handle lexer or parser errors with nlr.
    nlr_buf_t nlr;
    if (nlr_push(&nlr) == 0) {
--- a/apps/empty_battery_window.cpp
+++ b/apps/empty_battery_window.cpp
@@ -1,5 +1,4 @@
 #include "empty_battery_window.h"
-#include "global_preferences.h"
 #include <apps/i18n.h>
 extern "C" {
 #include <assert.h>
@@ -12,7 +11,7 @@ EmptyBatteryWindow::EmptyBatteryWindow() :

 void EmptyBatteryWindow::drawRect(KDContext * ctx, KDRect rect) const {
  ctx->fillRect(bounds(), KDColorWhite);
-  const char * warningMessage = I18n::translate(I18n::Message::LowBattery, GlobalPreferences::sharedGlobalPreferences()->language());
+  const char * warningMessage = I18n::translate(I18n::Message::LowBattery);
  KDSize warningSize = KDFont::LargeFont->stringSize(warningMessage);
  ctx->drawString(warningMessage, KDPoint((Ion::Display::Width - warningSize.width())/2, (Ion::Display::Height - warningSize.height())/2), KDFont::LargeFont);
 }
--- a/apps/external/Makefile
+++ b/apps/external/Makefile
@@ -18,7 +18,7 @@ else
 	include $(EXTAPP_PATH)/sources.mak
 endif

-app_src += $(app_external_src)
+apps_src += $(app_external_src)

 i18n_files += $(addprefix apps/external/,\
  base.de.i18n\
--- a/apps/global_preferences.h
+++ b/apps/global_preferences.h
@@ -30,8 +30,9 @@ public:
  void setFont(const KDFont * font) { m_font = font; }
  constexpr static int NumberOfBrightnessStates = 15;
 private:
+  static_assert(I18n::NumberOfLanguages > 0, "I18n::NumberOfLanguages is not superior to 0"); // There should already have be an error when processing an empty EPSILON_I18N flag
  GlobalPreferences() :
-    m_language(I18n::Language::EN),
+    m_language((I18n::Language)0),
    m_examMode(ExamMode::Unknown),
    m_tempExamMode(ExamMode::Standard),
    m_showPopUp(true),
--- a/apps/graph/Makefile
+++ b/apps/graph/Makefile
@@ -31,7 +31,7 @@ app_graph_src = $(addprefix apps/graph/,\
  values/values_controller.cpp \
 )

-app_src += $(app_graph_src)
+apps_src += $(app_graph_src)

 i18n_files += $(addprefix apps/graph/,\
  base.de.i18n\
--- a/apps/hardware_test/Makefile
+++ b/apps/hardware_test/Makefile
@@ -16,4 +16,4 @@ app_hardware_test_src = $(addprefix apps/hardware_test/,\
  vblank_test_controller.cpp \
 )

-app_src += $(app_hardware_test_src)
+apps_src += $(app_hardware_test_src)
--- a/apps/home/Makefile
+++ b/apps/home/Makefile
@@ -4,7 +4,7 @@ app_home_src = $(addprefix apps/home/,\
  controller.cpp \
 )

-app_src += $(app_home_src)
+apps_src += $(app_home_src)

 i18n_files += $(addprefix apps/home/,\
  base.de.i18n \
--- a/apps/home/base.fr.i18n
+++ b/apps/home/base.fr.i18n
@@ -1,4 +1,4 @@
 Apps = "Applications"
 AppsCapital = "STAY HOME(GA)"
-ForbidenAppInExamMode1 = "This application is"
-ForbidenAppInExamMode2 = "forbidden in exam mode"
+ForbidenAppInExamMode1 = "Cette application n'est"
+ForbidenAppInExamMode2 = "pas autorisée en mode examen."
--- a/apps/i18n.py
+++ b/apps/i18n.py
@@ -12,6 +12,19 @@ import unicodedata
 import argparse
 import io

+
+parser = argparse.ArgumentParser(description="Process some i18n files.")
+parser.add_argument('--header', help='the .h file to generate')
+parser.add_argument('--implementation', help='the .cpp file to generate')
+parser.add_argument('--locales', nargs='+', help='locale to actually generate')
+parser.add_argument('--codepoints', help='the code_points.h file')
+parser.add_argument('--files', nargs='+', help='an i18n file')
+
+args = parser.parse_args()
+
+def has_glyph(glyph):
+    return glyph in codepoints
+
 def source_definition(i18n_string):
    s = unicodedata.normalize("NFKD", i18n_string)
    result = u"\""
@@ -29,6 +42,9 @@ def source_definition(i18n_string):
            # Remove the uppercase characters with combining chars
            checkForCombining = s[i].isupper()
            result = result + s[i]
+        if not has_glyph(s[i]):
+            sys.stderr.write(s[i] + " (" + str(hex(ord(s[i]))) + ") is not a character present in " + args.codepoints + " . Exiting !\n")
+            sys.exit(-1)
        i = i+1
    result = result + u"\""
    return result.encode("utf-8")
@@ -73,6 +89,27 @@ def parse_files(files):
                data[locale][name] = definition
    return {"messages": sorted(messages), "universal_messages": sorted(universal_messages), "data": data}

+def parse_codepoints(file):
+    codepoints = []
+    with io.open(file, "r", encoding='utf-8') as file:
+        IsCodePoint = False
+        for line in file:
+            if "};" in line:
+                IsCodePoint = False
+            if IsCodePoint:
+                start = line.find('0x')
+                stop = line.find(',')
+                if not (start == -1 or stop == -1):
+                    hexstring = line[start:stop]
+                    value = int(hexstring, 16)
+                    char = chr(value)
+                    codepoints.append(char)
+            if "CodePoints[]" in line:
+                IsCodePoint = True
+    return codepoints
+
+codepoints = parse_codepoints(args.codepoints)
+
 def print_header(data, path, locales):
    f = open(path, "w")
    f.write("#ifndef APPS_I18N_H\n")
@@ -95,9 +132,10 @@ def print_header(data, path, locales):

    # Languages enumeration
    f.write("enum class Language : uint16_t {\n")
-    f.write("  Default = 0,\n")
+    index = 0
    for locale in locales:
-        f.write("  " + locale.upper() + ",\n")
+        f.write("  " + locale.upper() + (" = 0" if (index < 1) else "") +",\n")
+        index = index + 1
    f.write("};\n\n")

    # Language names
@@ -159,32 +197,21 @@ def print_implementation(data, path, locales):


    # Write the translate method
-    f.write("const char * translate(Message m, Language l) {\n")
+    f.write("const char * translate(Message m) {\n")
    f.write("  assert(m != Message::LocalizedMessageMarker);\n")
    f.write("  int localizedMessageOffset = (int)Message::LocalizedMessageMarker+1;\n")
    f.write("  if ((int)m < localizedMessageOffset) {\n")
    f.write("    assert(universalMessages[(int)m] != nullptr);\n")
    f.write("    return universalMessages[(int)m];\n")
    f.write("  }\n")
-    f.write("  int languageIndex = (int)l;\n")
-    f.write("  if (l == Language::Default) {\n")
-    f.write("    languageIndex = (int) GlobalPreferences::sharedGlobalPreferences()->language();\n")
-    f.write("  }\n")
-    f.write("  assert(languageIndex > 0);\n")
+    f.write("  int languageIndex = (int)GlobalPreferences::sharedGlobalPreferences()->language();\n")
    f.write("  int messageIndex = (int)m - localizedMessageOffset;\n")
-    f.write("  assert((messageIndex*NumberOfLanguages+languageIndex-1)*sizeof(char *) < sizeof(messages));\n")
-    f.write("  return messages[messageIndex][languageIndex-1];\n")
+    f.write("  assert((messageIndex*NumberOfLanguages+languageIndex)*sizeof(char *) < sizeof(messages));\n")
+    f.write("  return messages[messageIndex][languageIndex];\n")
    f.write("}\n\n")
    f.write("}\n")
    f.close()

-parser = argparse.ArgumentParser(description="Process some i18n files.")
-parser.add_argument('--header', help='the .h file to generate')
-parser.add_argument('--implementation', help='the .cpp file to generate')
-parser.add_argument('--locales', nargs='+', help='locale to actually generate')
-parser.add_argument('--files', nargs='+', help='an i18n file')
-
-args = parser.parse_args()
 data = parse_files(args.files)
 if args.header:
    print_header(data, args.header, args.locales)
--- a/apps/on_boarding/Makefile
+++ b/apps/on_boarding/Makefile
@@ -7,7 +7,7 @@ app_on_boarding_src = $(addprefix apps/on_boarding/,\
  power_on_self_test.cpp \
 )

-app_src += $(app_on_boarding_src)
+apps_src += $(app_on_boarding_src)

 i18n_files += $(addprefix apps/on_boarding/,\
  base.de.i18n\
--- a/apps/probability/Makefile
+++ b/apps/probability/Makefile
@@ -38,7 +38,7 @@ app_probability_src = $(addprefix apps/probability/,\
 )

 app_probability_src += $(app_probability_test_src)
-app_src += $(app_probability_src)
+apps_src += $(app_probability_src)

 i18n_files += $(addprefix apps/probability/,\
  base.de.i18n\
--- a/apps/probability/base.hu.i18n
+++ b/apps/probability/base.hu.i18n
@@ -23,5 +23,5 @@ DeviationDefinition = "σ: szórás"
 LambdaPoissonDefinition = "λ: Paraméter"
 DegreesOfFreedomDefinition = "k: Szabadságfokok"
 D1FisherDefinition = "d1: A számláló szabadsági foka"
-D2FisherDefinition = "d2: A nevező szabadsági foka"
+D2FisherDefinition = "d2: A nevezó szabadsági foka"
 ComputeProbability = "Számítsa ki a valószínüségeket"
--- a/apps/regression/Makefile
+++ b/apps/regression/Makefile
@@ -37,7 +37,7 @@ app_regression_src = $(addprefix apps/regression/,\
 )

 app_regression_src += $(app_regression_test_src)
-app_src += $(app_regression_src)
+apps_src += $(app_regression_src)

 i18n_files += $(addprefix apps/regression/,\
  base.de.i18n\
--- a/apps/regression/graph_controller.cpp
+++ b/apps/regression/graph_controller.cpp
@@ -351,7 +351,7 @@ uint32_t GraphController::modelVersion() {
  return m_store->storeChecksum();
 }

-uint32_t GraphController::modelVersionAtIndex(size_t i) {
+uint32_t GraphController::modelVersionAtIndex(int i) {
  assert(i < numberOfMemoizedVersions());
  return *(m_store->seriesChecksum() + i);
 }
--- a/apps/regression/graph_controller.h
+++ b/apps/regression/graph_controller.h
@@ -43,7 +43,7 @@ private:
  // InteractiveCurveViewController
  void initCursorParameters() override;
  uint32_t modelVersion() override;
-  uint32_t modelVersionAtIndex(size_t i) override;
+  uint32_t modelVersionAtIndex(int i) override;
  uint32_t rangeVersion() override;
  size_t numberOfMemoizedVersions() const override { return Store::k_numberOfSeries; }
  int selectedCurveIndex() const override { return *m_selectedSeriesIndex; }
--- a/apps/rpn
+++ b/apps/rpn
--- a/apps/sequence/Makefile
+++ b/apps/sequence/Makefile
@@ -26,7 +26,7 @@ app_sequence_src = $(addprefix apps/sequence/,\
 )

 app_sequence_src += $(app_sequence_test_src)
-app_src += $(app_sequence_src)
+apps_src += $(app_sequence_src)

 i18n_files += $(addprefix apps/sequence/,\
  base.de.i18n\
--- a/apps/settings/Makefile
+++ b/apps/settings/Makefile
@@ -5,8 +5,16 @@ app_settings_src = $(addprefix apps/settings/,\
  app.cpp \
  cell_with_separator.cpp \
  main_controller.cpp \
+  main_controller_prompt_beta.cpp:+beta \
+  main_controller_prompt_none.cpp:-beta \
+  main_controller_prompt_none.cpp:-update \
+  main_controller_prompt_update.cpp:+update \
  sub_menu/about_controller.cpp \
  sub_menu/accessibility_controller.cpp \
+  sub_menu/about_controller_official.cpp:+official \
+  sub_menu/about_controller_non_official.cpp:-official \
+  sub_menu/exam_mode_controller_official.cpp:+official \
+  sub_menu/exam_mode_controller_non_official.cpp:-official \
  sub_menu/display_mode_controller.cpp \
  sub_menu/exam_mode_controller.cpp \
  sub_menu/generic_sub_controller.cpp \
@@ -18,24 +26,7 @@ app_settings_src = $(addprefix apps/settings/,\
 )

 app_settings_src += $(app_settings_test_src)
-app_src += $(app_settings_src)
-
-apps_prompt_none_src += apps/settings/main_controller_prompt_none.cpp
-apps_prompt_beta_src += apps/settings/main_controller_prompt_beta.cpp
-apps_prompt_update_src += apps/settings/main_controller_prompt_update.cpp
-
-apps_settings_official += $(addprefix apps/settings/,\
-  sub_menu/about_controller_official.cpp \
-  sub_menu/exam_mode_controller_official.cpp \
-)
-
-apps_settings_non_official += $(addprefix apps/settings/,\
-  sub_menu/about_controller_non_official.cpp \
-  sub_menu/exam_mode_controller_non_official.cpp \
-)
-
-apps_official += $(apps_settings_official)
-apps_non_official += $(apps_settings_non_official)
+apps_src += $(app_settings_src)

 i18n_files += $(addprefix apps/settings/,\
  base.de.i18n\
--- a/apps/settings/base.fr.i18n
+++ b/apps/settings/base.fr.i18n
@@ -42,9 +42,9 @@ CompactResult = "Compact "
 FontSizes = "Police Python"
 LargeFont = "Grand "
 SmallFont = "Petit "
-SerialNumber = "Numéro série"
-UpdatePopUp = "Rappel mise à jour"
-BetaPopUp = "Rappel version bêta"
+SerialNumber = "Numéro de série"
+UpdatePopUp = "Rappel de mise à jour"
+BetaPopUp = "Rappel de version bêta"
 Contributors = "Contributeurs"
 Accessibility = "Accessibilité"
 AccessibilityInvertColors = "Inverser couleurs"
--- a/apps/settings/main_controller.cpp
+++ b/apps/settings/main_controller.cpp
@@ -183,7 +183,7 @@ void MainController::willDisplayCellForIndex(HighlightCell * cell, int index) {
  MessageTableCell * myCell = (MessageTableCell *)cell;
  myCell->setMessage(title);
  if (model()->children(index)->label() == I18n::Message::Language) {
-    int index = (int)globalPreferences->language()-1;
+    int index = (int)(globalPreferences->language());
    static_cast<MessageTableCellWithChevronAndMessage *>(cell)->setSubtitle(I18n::LanguageNames[index]);
    return;
  }
--- a/apps/shared/Makefile
+++ b/apps/shared/Makefile
@@ -84,4 +84,4 @@ app_shared_src = $(addprefix apps/shared/,\
 )

 app_shared_src += $(app_shared_test_src)
-app_src += $(app_shared_src)
+apps_src += $(app_shared_src)
--- a/apps/shared/curve_view.cpp
+++ b/apps/shared/curve_view.cpp
@@ -472,6 +472,10 @@ void CurveView::drawArrow(KDContext * ctx, KDRect rect, float x, float y, float
   *
   **/
  assert(angle >= 0.0f);
+  if (std::fabs(dx) < FLT_EPSILON && std::fabs(dy) < FLT_EPSILON) {
+    // We can't draw an arrow without any orientation
+    return;
+  }
  /* We compute the arrow segments in pixels in order to correctly size the
   * arrow without depending on the displayed range.
   * Warning: the computed values are relative so we need to add/subtract the
--- a/apps/shared/expression_model.cpp
+++ b/apps/shared/expression_model.cpp
@@ -34,7 +34,7 @@ void ExpressionModel::text(const Storage::Record * record, char * buffer, size_t
    e = e.replaceSymbolWithExpression(Symbol::Builder(UCodePointUnknown), Symbol::Builder(symbol));
  }
  int serializedSize = e.serialize(buffer, bufferSize);
-  if (serializedSize >= bufferSize - 1) {
+  if (serializedSize >= (int)bufferSize - 1) {
    // It is very likely that the buffer is overflowed
    buffer[0] = 0;
  }
--- a/apps/shared/function_graph_controller.cpp
+++ b/apps/shared/function_graph_controller.cpp
@@ -183,7 +183,7 @@ uint32_t FunctionGraphController::modelVersion() {
  return functionStore()->storeChecksum();
 }

-uint32_t FunctionGraphController::modelVersionAtIndex(size_t i) {
+uint32_t FunctionGraphController::modelVersionAtIndex(int i) {
  return functionStore()->storeChecksumAtIndex(i);
 }

--- a/apps/shared/function_graph_controller.h
+++ b/apps/shared/function_graph_controller.h
@@ -50,7 +50,7 @@ private:
  // InteractiveCurveViewController
  bool moveCursorVertically(int direction) override;
  uint32_t modelVersion() override;
-  uint32_t modelVersionAtIndex(size_t i) override;
+  uint32_t modelVersionAtIndex(int i) override;
  uint32_t rangeVersion() override;
  size_t numberOfMemoizedVersions() const override { return sNumberOfMemoizedModelVersions; }

--- a/apps/shared/function_store.cpp
+++ b/apps/shared/function_store.cpp
@@ -6,7 +6,7 @@ uint32_t FunctionStore::storeChecksum() {
  return Ion::Storage::sharedStorage()->checksum();
 }

-uint32_t FunctionStore::storeChecksumAtIndex(size_t i) {
+uint32_t FunctionStore::storeChecksumAtIndex(int i) {
  if (numberOfActiveFunctions() <= i) {
    return 0;
  }
--- a/apps/shared/function_store.h
+++ b/apps/shared/function_store.h
@@ -13,7 +13,7 @@ class FunctionStore : public ExpressionModelStore {
 public:
  FunctionStore() : ExpressionModelStore() {}
  uint32_t storeChecksum();
-  uint32_t storeChecksumAtIndex(size_t i);
+  uint32_t storeChecksumAtIndex(int i);
  int numberOfActiveFunctions() const {
    return numberOfModelsSatisfyingTest(&isFunctionActive, nullptr);
  }
--- a/apps/shared/interactive_curve_view_controller.h
+++ b/apps/shared/interactive_curve_view_controller.h
@@ -41,7 +41,7 @@ protected:
  virtual void initCursorParameters() = 0;
  virtual bool moveCursorVertically(int direction) = 0;
  virtual uint32_t modelVersion() = 0;
-  virtual uint32_t modelVersionAtIndex(size_t i) = 0;
+  virtual uint32_t modelVersionAtIndex(int i) = 0;
  virtual uint32_t rangeVersion() = 0;
  bool isCursorVisible();

--- a/apps/shared/language_controller.cpp
+++ b/apps/shared/language_controller.cpp
@@ -18,8 +18,7 @@ LanguageController::LanguageController(Responder * parentResponder, KDCoordinate

 void LanguageController::resetSelection() {
  m_selectableTableView.deselectTable();
-  int index = (int)GlobalPreferences::sharedGlobalPreferences()->language()-1;
-  selectCellAtLocation(0, index);
+  selectCellAtLocation(0, (int)(GlobalPreferences::sharedGlobalPreferences()->language()));
 }

 const char * LanguageController::title() {
@@ -41,7 +40,7 @@ void LanguageController::viewWillAppear() {

 bool LanguageController::handleEvent(Ion::Events::Event event) {
  if (event == Ion::Events::OK || event == Ion::Events::EXE) {
-    GlobalPreferences::sharedGlobalPreferences()->setLanguage((I18n::Language)(selectedRow()+1));
+    GlobalPreferences::sharedGlobalPreferences()->setLanguage((I18n::Language)selectedRow());
    /* We need to reload the whole title bar in order to translate both the
     * "Settings" title and the degree preference. */
    AppsContainer::sharedAppsContainer()->reloadTitleBarView();
--- a/apps/shared/scrollable_multiple_expressions_view.cpp
+++ b/apps/shared/scrollable_multiple_expressions_view.cpp
@@ -168,7 +168,10 @@ void AbstractScrollableMultipleExpressionsView::setLayouts(Poincare::Layout left
  }
  if (updateLeftLayout || updateCenterLayout || updateRightLayout) {
    contentCell()->reloadTextColor();
+    // Reload expressions layouts
    contentCell()->layoutSubviews();
+    // Reload the scroll content view layout (the content size might have changed)
+    layoutSubviews();
    // Do no reload scroll here as 'setLayouts' is called every time the table is re-layout (when scrolling for instance)
  }
 }
--- a/apps/solver/Makefile
+++ b/apps/solver/Makefile
@@ -16,7 +16,7 @@ app_solver_src = $(addprefix apps/solver/,\
 )

 app_solver_src += $(app_solver_test_src)
-app_src += $(app_solver_src)
+apps_src += $(app_solver_src)

 i18n_files += $(addprefix apps/solver/,\
  base.de.i18n\
--- a/apps/solver/test/equation_store.cpp
+++ b/apps/solver/test/equation_store.cpp
@@ -165,6 +165,15 @@ QUIZ_CASE(equation_solve) {
  const char * solutions22[] = {"\u0012\u0012-π-20\u0013/\u00128\u0013\u0013", "\u0012\u0012π+20\u0013/\u00128\u0013\u0013", "\u0012\u0012π\u0013/\u00124\u0013\u0013", "3", "-8", "5"}; // (-π-20)/8, (π+20)/8, π/4, 3, 5, -8
  assert_equation_system_exact_solve_to(equations22,  EquationStore::Error::NoError, EquationStore::Type::LinearSystem, (const char **)variablesxyzabc, solutions22, 6);

+  /* This test case needs the user defined variable. Indeed, in the equation
+   * store, m_variables is just before m_userVariables, so bad fetching in
+   * m_variables might fetch into m_userVariables and create problems. */
+  assert_simplify("0→x");
+  const char * variablesbDeyzt[] = {"b", "D", "e", "y", "z", "t"};
+  const char * equations23[] = {"b=0", "D=0", "e=0", "", "x+y+z+t=0", 0};
+  assert_equation_system_exact_solve_to(equations23,  EquationStore::Error::NoError, EquationStore::Type::LinearSystem, (const char **)variablesbDeyzt, nullptr, INT_MAX);
+  Ion::Storage::sharedStorage()->recordNamed("x.exp").destroy();
+
  // Monovariable non-polynomial equation
  double solutions15[] = {-90.0, 90.0};
  assert_equation_approximate_solve_to("cos(x)=0", -100.0, 100.0, "x", solutions15, 2, false);
--- a/apps/statistics/Makefile
+++ b/apps/statistics/Makefile
@@ -27,7 +27,7 @@ app_statistics_src = $(addprefix apps/statistics/,\
 )

 app_statistics_src += $(app_statistics_test_src)
-app_src += $(app_statistics_src)
+apps_src += $(app_statistics_src)

 i18n_files += $(addprefix apps/statistics/,\
  base.de.i18n\
--- a/apps/toolbox.hu.i18n
+++ b/apps/toolbox.hu.i18n
@@ -19,7 +19,7 @@ UnitDistanceMeterMilli = "Milliméter"
 UnitDistanceMeterMicro = "Mikrométer"
 UnitDistanceMeterNano = "Nanométer"
 UnitDistanceMeterPico = "Pikométer"
-UnitDistanceAstronomicalUnit = "Csillagászati egység"
+UnitDistanceAstronomicalUnit = "Csillagászati egység"
 UnitDistanceLightYear = "Fény év"
 UnitDistanceParsec = "Parsec"
 UnitMassMenu = "Tömeg"
--- a/apps/usb/Makefile
+++ b/apps/usb/Makefile
@@ -3,7 +3,7 @@ app_usb_src = $(addprefix apps/usb/,\
  usb_connected_controller.cpp \
 )

-app_src += $(app_usb_src)
+apps_src += $(app_usb_src)

 i18n_files += $(addprefix apps/usb/,\
  base.de.i18n\
--- a/build/all.mak
+++ b/build/all.mak
@@ -0,0 +1,59 @@
+# This is a standalone Makefile
+# Invoke using "make -f build/all.mak"
+
+ANDROID_GRADLE_KEYSTORE ?= ~/.gradle/google-play-upload.keystore
+ANDROID_GRADLE_PROPERTIES ?= ~/.gradle/gradle.properties
+IOS_MOBILE_PROVISION ?= build/artifacts/NumWorks_Graphing_Calculator_Distribution.mobileprovision
+EMCC ?= emcc
+
+define file_check
+@ if test ! -f $(1); \
+  then \
+  echo "Missing file: $(1)"; \
+  exit 1; \
+fi
+endef
+
+define command_check
+@ if ! command -v $(1) > /dev/null; \
+  then \
+  echo "Missing command: $(1), did you forget to source?"; \
+  exit 1; \
+fi
+endef
+
+.PHONY: all
+all:
+	$(call file_check,$(ANDROID_GRADLE_KEYSTORE))
+	$(call file_check,$(ANDROID_GRADLE_PROPERTIES))
+	$(call file_check,$(IOS_MOBILE_PROVISION))
+	$(call command_check,$(EMCC))
+	@ rm -rf output/all_official
+	@ mkdir -p output/all_official
+	@ echo "BUILD_FIRMWARE    DEVICE N0110"
+	@ $(MAKE) clean
+	@ $(MAKE) epsilon.official.onboarding.dfu
+	@ cp output/release/device/n0110/epsilon.official.onboarding.dfu output/all_official/epsilon.device.n0110.dfu
+	@ echo "BUILD_FIRMWARE    DEVICE N0100"
+	@ $(MAKE) MODEL=n0100 clean
+	@ $(MAKE) MODEL=n0100 epsilon.official.onboarding.dfu
+	@ cp output/release/device/n0100/epsilon.official.onboarding.dfu output/all_official/epsilon.device.n0100.dfu
+	@ echo "BUILD_FIRMWARE    SIMULATOR WEB ZIP"
+	@ $(MAKE) PLATFORM=simulator TARGET=web clean
+	@ $(MAKE) PLATFORM=simulator TARGET=web epsilon.official.zip
+	@ cp output/release/simulator/web/epsilon.official.zip output/all_official/simulator.web.zip
+	@ echo "BUILD_FIRMWARE    SIMULATOR WEB JS"
+	@ $(MAKE) PLATFORM=simulator TARGET=web epsilon.official.js
+	@ cp output/release/simulator/web/epsilon.official.js output/all_official/epsilon.js
+	@ echo "BUILD_FIRMWARE    SIMULATOR WEB PYTHON JS"
+	@ $(MAKE) PLATFORM=simulator TARGET=web clean
+	@ $(MAKE) PLATFORM=simulator TARGET=web EPSILON_GETOPT=1 EPSILON_APPS=code epsilon.official.js
+	@ cp output/release/simulator/web/epsilon.official.js output/all_official/epsilon.python.js
+	@ echo "BUILD_FIRMWARE    SIMULATOR ANDROID"
+	@ $(MAKE) PLATFORM=simulator TARGET=android clean
+	@ $(MAKE) PLATFORM=simulator TARGET=android epsilon.official.apk
+	@ cp output/release/simulator/android/epsilon.official.apk output/all_official/epsilon.official.apk
+	@ echo "BUILD_FIRMWARE    SIMULATOR IOS"
+	@ $(MAKE) PLATFORM=simulator TARGET=ios clean
+	@ $(MAKE) PLATFORM=simulator TARGET=ios IOS_PROVISIONNING_PROFILE=$(IOS_MOBILE_PROVISION) epsilon.official.ipa
+	@ cp output/release/simulator/ios/epsilon.official.ipa output/all_official/epsilon.ipa
--- a/build/config.mak
+++ b/build/config.mak
@@ -2,10 +2,6 @@

 PLATFORM ?= device
 DEBUG ?= 0
-LEDS_CHOICE ?= 0
-
-include build/defaults.mak
-include build/platform.$(PLATFORM).mak

 EPSILON_VERSION ?= 13.1.0
 EPSILON_CUSTOM_VERSION ?= 1.19.0-0
@@ -17,17 +13,4 @@ EPSILON_GETOPT ?= 0
 EPSILON_TELEMETRY ?= 0
 ESCHER_LOG_EVENTS_BINARY ?= 0
 OMEGA_THEME ?= omega_light
-
-ifndef USE_LIBA
-  $(error platform.mak should define USE_LIBA)
-endif
-include build/toolchain.$(TOOLCHAIN).mak
-
-SFLAGS += -DDEBUG=$(DEBUG)
-SFLAGS += -DLEDS_CHOICE=$(LEDS_CHOICE)
-ifdef USERNAME
-  SFLAGS += -DUSERNAME="$(USERNAME)"
-endif
-SFLAGS += -DEPSILON_GETOPT=$(EPSILON_GETOPT)
-SFLAGS += -DEPSILON_TELEMETRY=$(EPSILON_TELEMETRY)
-SFLAGS += -DESCHER_LOG_EVENTS_BINARY=$(ESCHER_LOG_EVENTS_BINARY)
+LEDS_CHOICE ?= 0
--- a/build/defaults.mak
+++ b/build/defaults.mak
@@ -2,6 +2,15 @@ HOSTCC = gcc
 HOSTCXX = g++
 PYTHON = python3

+SFLAGS += -DDEBUG=$(DEBUG)
+SFLAGS += -DLEDS_CHOICE=$(LEDS_CHOICE)
+ifdef USERNAME
+  SFLAGS += -DUSERNAME="$(USERNAME)"
+endif
+SFLAGS += -DEPSILON_GETOPT=$(EPSILON_GETOPT)
+SFLAGS += -DEPSILON_TELEMETRY=$(EPSILON_TELEMETRY)
+SFLAGS += -DESCHER_LOG_EVENTS_BINARY=$(ESCHER_LOG_EVENTS_BINARY)
+
 # Language-specific flags
 CFLAGS = -std=c99
 CXXFLAGS = -std=c++11 -fno-exceptions -fno-rtti -fno-threadsafe-statics
--- a/build/helpers.mk
+++ b/build/helpers.mk
@@ -0,0 +1,60 @@
+# Define a standard rule helper
+# If passed a last parameter value of with_local_version, we also define an
+# extra rule that can build source files within the $(BUILD_DIR). This is useful
+# for rules that can be applied for intermediate objects (for example, when
+# going .png -> .cpp -> .o).
+
+define rule_label
+@ echo "$(shell printf "%-8s" $(strip $(1)))$(@:$(BUILD_DIR)/%=%)"
+endef
+
+# rule_for can define both global and local rules
+#  - use local if the source can be an intermediate file
+#  - use global if the source can be in the main tree
+define rule_for
+ifneq ($(filter global,$(5)),)
+$(addprefix $$(BUILD_DIR)/,$(strip $(2))): $(strip $(3)) | $$$$(@D)/.
+	@ echo "$(shell printf "%-8s" $(strip $(1)))$$(@:$$(BUILD_DIR)/%=%)"
+	$(Q) $(4)
+endif
+ifneq ($(filter local,$(5)),)
+$(addprefix $$(BUILD_DIR)/,$(strip $(2))): $(addprefix $$(BUILD_DIR)/,$(strip $(3)))
+	@ echo "$(shell printf "%-8s" $(strip $(1)))$$(@:$$(BUILD_DIR)/%=%)"
+	$(Q) $(4)
+endif
+endef
+
+# Helper functions to work with variants
+
+define direct_object_for
+$(addprefix $(BUILD_DIR)/,$(addsuffix .o,$(basename $(1))))
+endef
+
+# Objects for source files in $(1) matching flavor $(2). A flavor is a dot
+# separated list of variants (e.g. large.speed).
+define flavored_object_for
+$(call direct_object_for,$(call filter_variants,$(1),$(sort $(subst ., ,$(2)))))
+endef
+
+define object_for
+$(call direct_object_for,$(call any_variant,$(1)))
+endef
+
+# Multi-arch helpers
+ifdef ARCHS
+ifndef ARCH
+
+# This rule allow us to build any executable (%) for a specified ARCH ($1)
+# We depend on a phony target to make sure this rule is always executed
+.PHONY: force_remake
+define rule_for_arch_executable
+.PRECIOUS: $$(BUILD_DIR)/$(1)/%.$$(EXE)
+$$(BUILD_DIR)/$(1)/%.$$(EXE): force_remake
+	$(Q) echo "MAKE    ARCH=$(1)"
+	$(Q) $$(MAKE) ARCH=$(1) --silent $$*.$$(EXE)
+endef
+
+$(foreach ARCH,$(ARCHS),$(eval $(call rule_for_arch_executable,$(ARCH))))
+
+endif
+endif
--- a/build/metrics/binary_size.py
+++ b/build/metrics/binary_size.py
@@ -0,0 +1,140 @@
+#!/usr/bin/env python3
+
+import argparse
+import os
+import re
+import subprocess
+import urllib.parse
+
+# ELF analysis
+
+def loadable_sections(elf_file, address_prefix = ""):
+  objdump_section_headers_pattern = re.compile("^\s+\d+\s+(\.[\w\.]+)\s+([0-9a-f]+)\s+([0-9a-f]+)\s+("+address_prefix+"[0-9a-f]+)\s+([0-9a-f]+).*LOAD", flags=re.MULTILINE)
+  objdump_output = subprocess.check_output(["arm-none-eabi-objdump", "-h", "-w", elf_file]).decode('utf-8')
+  sections = []
+  for (name, size, vma, lma, offset) in re.findall(objdump_section_headers_pattern, objdump_output):
+    int_size = int(size,16)
+    if (int_size > 0):
+      sections.append({'name': name, 'size': int_size, 'vma': int(vma,16), 'lma': int(lma,16), 'offset':int(offset,16)})
+  return sections
+
+
+# Data filtering
+
+def biggest_sections(sections, n):
+  sorted_sections = sorted(sections, key=lambda s: s['size'], reverse=True)
+  return sorted_sections[:n]
+
+def total_size(sections):
+  return sum(map(lambda s: s['size'], sections))
+
+def row_for_elf(elf, columns):
+  sections = loadable_sections(elf)
+  result = {}
+  for s in biggest_sections(sections, columns):
+    result[s['name']] = s['size']
+  result['Total'] = total_size(sections)
+  return result
+
+
+# String formatting
+
+def iso_separate(string):
+  space = ' ' # We may want to use a thin non-breaking space as thousands separator
+  return string.replace('_',space).replace('+','+'+space).replace('-','-'+space)
+
+def format_bytes(value, force_sign=False):
+  if value is None:
+    return ''
+  number_format = '{:'
+  if force_sign:
+    number_format += '+'
+  number_format += '_} bytes'
+  return iso_separate(number_format.format(value))
+
+def format_percentage(value):
+  if value is None:
+    return ''
+  return iso_separate("{:+.1f} %".format(100*value))
+
+
+# Markdown
+
+def emphasize(string):
+  if string:
+    return '_' + string + '_'
+  else:
+    return ''
+
+def strong(string):
+  if string:
+    return '**' + string + '**'
+  else:
+    return ''
+
+
+# Deltas
+
+def absolute_delta(x,y):
+  if x is None or y is None:
+    return None
+  return x-y
+
+def ratio_delta(x,y):
+  if x is None or y is None:
+    return None
+  return (x-y)/y
+
+
+# Table formatting
+
+def format_row(row, header=False):
+  result = '|'
+  if header:
+    result += strong(header)
+  result += '|'
+  for v in row:
+    result += v
+    result += '|'
+  result += '\n'
+  return result
+
+def format_table(table):
+  base = table[0]['values']
+  listed_sections = base.keys()
+  result = ''
+  result += format_row(listed_sections)
+  result += '|-|' + '-:|'*len(listed_sections) + '\n'
+  for i,row in enumerate(table):
+    v = row['values']
+    result += format_row((format_bytes(v.get(s)) for s in listed_sections), header=row['label'])
+    if i != 0:
+      result += format_row(emphasize(format_bytes(absolute_delta(v.get(s), base.get(s)), force_sign=True)) for s in listed_sections)
+      result += format_row(emphasize(format_percentage(ratio_delta(v.get(s), base.get(s)))) for s in listed_sections)
+  return result
+
+
+# Argument parsing
+
+parser = argparse.ArgumentParser(description='Compute binary size metrics')
+parser.add_argument('files', type=str, nargs='+', help='an ELF file')
+parser.add_argument('--labels', type=str, nargs='+', help='label for ELF file')
+parser.add_argument('--number-of-sections', type=int, default=2, help='Number of detailed sections')
+parser.add_argument('--escape', action='store_true', help='Escape the output')
+args = parser.parse_args()
+
+
+# Execution
+
+table = []
+for i,filename in enumerate(args.files):
+  label = os.path.basename(filename)
+  if args.labels and i < len(args.labels):
+    label = args.labels[i]
+  table.append({'label': label, 'values': row_for_elf(filename, args.number_of_sections)})
+formatted_table = format_table(table)
+
+if args.escape:
+  print(urllib.parse.quote(formatted_table, safe='| :*+'))
+else:
+  print(formatted_table)
--- a/build/platform.simulator.android.mak
+++ b/build/platform.simulator.android.mak
@@ -1,10 +1,12 @@
 TOOLCHAIN = android
+EXE = so

 EPSILON_TELEMETRY ?= 1

 ARCHS = armeabi-v7a arm64-v8a x86 x86_64

 ifdef ARCH
-EXE = so
 BUILD_DIR := $(BUILD_DIR)/$(ARCH)
+else
+HANDY_TARGETS_EXTENSIONS = apk
 endif
--- a/build/platform.simulator.ios.mak
+++ b/build/platform.simulator.ios.mak
@@ -6,7 +6,7 @@ APPLE_PLATFORM_MIN_VERSION = 8.0
 EPSILON_TELEMETRY ?= 1

 ifeq ($(APPLE_PLATFORM),ios)
-ARCHS ?= arm64 armv7
+ARCHS = arm64 armv7
 UI_REQUIRED_CAPABILITIES += armv7
 else ifeq ($(APPLE_PLATFORM),ios-simulator)
 ARCHS = x86_64
@@ -16,4 +16,6 @@ BUILD_DIR := $(subst $(TARGET),$(APPLE_PLATFORM),$(BUILD_DIR))

 ifdef ARCH
 BUILD_DIR := $(BUILD_DIR)/$(ARCH)
+else
+HANDY_TARGETS_EXTENSIONS = ipa app
 endif
--- a/build/platform.simulator.macos.mak
+++ b/build/platform.simulator.macos.mak
@@ -10,4 +10,6 @@ EPSILON_SIMULATOR_HAS_LIBPNG = 1

 ifdef ARCH
 BUILD_DIR := $(BUILD_DIR)/$(ARCH)
+else
+HANDY_TARGETS_EXTENSIONS = app
 endif
--- a/build/platform.simulator.web.mak
+++ b/build/platform.simulator.web.mak
@@ -1,2 +1,4 @@
 TOOLCHAIN = emscripten
 EXE = js
+
+HANDY_TARGETS_EXTENSIONS += zip
--- a/build/rules.mk
+++ b/build/rules.mk
@@ -1,46 +1,63 @@
 # Define standard compilation rules

-.PHONY: official_authorization
-ifeq ($(ACCEPT_OFFICIAL_TOS),1)
-official_authorization:
-else
-official_authorization:
-	@echo "CAUTION: You are trying to build an official NumWorks firmware."
-	@echo "Distribution of such firmware by a third party is prohibited."
-	@echo "Please set the ACCEPT_OFFICIAL_TOS environment variable to proceed."
-	@exit -1
-endif
-
 $(eval $(call rule_for, \
  AS, %.o, %.s, \
-  $$(CC) $$(SFLAGS) -c $$< -o $$@ \
+  $$(CC) $$(SFLAGS) -c $$< -o $$@, \
+  global \
 ))

 $(eval $(call rule_for, \
  CC, %.o, %.c, \
  $$(CC) $$(CFLAGS) $$(SFLAGS) -c $$< -o $$@, \
-  with_local_version \
+  global local \
+))
+
+$(eval $(call rule_for, \
+  CPP, %, %.inc, \
+  $$(CPP) -P $$< $$@, \
+  global \
 ))

 $(eval $(call rule_for, \
  CXX, %.o, %.cpp, \
  $$(CXX) $$(CXXFLAGS) $$(SFLAGS) -c $$< -o $$@, \
-  with_local_version \
+  global local \
+))
+
+$(eval $(call rule_for, \
+  DFUSE, %.dfu, %.elf, \
+  $$(PYTHON) build/device/elf2dfu.py $$< $$@, \
+  local \
+))
+
+$(eval $(call rule_for, \
+  OBJCOPY, %.hex, %.elf, \
+  $$(OBJCOPY) -O ihex $$< $$@, \
+  local \
+))
+
+$(eval $(call rule_for, \
+  OBJCOPY, %.bin, %.elf, \
+  $$(OBJCOPY) -O binary $$< $$@, \
+  local \
 ))

 $(eval $(call rule_for, \
  OCC, %.o, %.m, \
-  $$(CC) $$(CFLAGS) $$(SFLAGS) -c $$< -o $$@ \
+  $$(CC) $$(CFLAGS) $$(SFLAGS) -c $$< -o $$@, \
+  global \
 ))

 $(eval $(call rule_for, \
  OCC, %.o, %.mm, \
-  $$(CXX) $$(CXXFLAGS) $$(SFLAGS) -c $$< -o $$@ \
+  $$(CXX) $$(CXXFLAGS) $$(SFLAGS) -c $$< -o $$@, \
+  global \
 ))

 $(eval $(call rule_for, \
-  CPP, %, %.inc, \
-  $$(CPP) -P $$< $$@ \
+  WINDRES, %.o, %.rc, \
+  $$(WINDRES) $$< -O coff -o $$@, \
+  global \
 ))

 ifdef EXE
@@ -52,17 +69,14 @@ ifeq ($(OS),Windows_NT)
 # the linker to read its arguments from this file.
 $(eval $(call rule_for, \
  LD, %.$$(EXE), , \
-  echo $$^ > $$@.objs && $$(LD) @$$@.objs $$(LDFLAGS) -o $$@ && rm $$@.objs \
+  echo $$^ > $$@.objs && $$(LD) @$$@.objs $$(LDFLAGS) -o $$@ && rm $$@.objs, \
+  global \
 ))
 else
 $(eval $(call rule_for, \
  LD, %.$$(EXE), , \
-  $$(LD) $$^ $$(LDFLAGS) -o $$@ \
+  $$(LD) $$^ $$(LDFLAGS) -o $$@, \
+  global \
 ))
 endif
 endif
-
-$(eval $(call rule_for, \
-  WINDRES, %.o, %.rc, \
-  $$(WINDRES) $$< -O coff -o $$@ \
-))
--- a/build/targets.all.mak
+++ b/build/targets.all.mak
@@ -1,60 +0,0 @@
-ANDROID_GRADLE_KEYSTORE ?= ~/.gradle/google-play-upload.keystore
-ANDROID_GRADLE_PROPERTIES ?= ~/.gradle/gradle.properties
-IOS_MOBILE_PROVISION ?= build/artifacts/NumWorks_Graphing_Calculator_Distribution.mobileprovision
-EMCC ?= emcc
-
-define source_emsdk
-source ~/emsdk/emsdk_env.sh > /dev/null
-endef
-
-define file_check
-@ if test ! -f $(1); \
-  then \
-  echo "Missing file: $(1)"; \
-  exit 1; \
-fi
-endef
-
-define command_check
-@ if ! command -v $(1) > /dev/null; \
-  then \
-  echo "Missing command: $(1), did you forget to source?"; \
-  exit 1; \
-fi
-endef
-
-.PHONY: all_official
-all_official:
-	$(call file_check,$(ANDROID_GRADLE_KEYSTORE))
-	$(call file_check,$(ANDROID_GRADLE_PROPERTIES))
-	$(call file_check,$(IOS_MOBILE_PROVISION))
-	$(call command_check,$(EMCC))
-	$(Q) rm -rf output/all_official
-	$(Q) mkdir -p output/all_official
-	$(Q) echo "BUILD_FIRMWARE    DEVICE N0110"
-	$(Q) $(MAKE) clean
-	$(Q) $(MAKE) epsilon.official.onboarding.dfu
-	$(Q) cp output/release/device/n0110/epsilon.official.onboarding.dfu output/all_official/epsilon.device.n0110.dfu
-	$(Q) echo "BUILD_FIRMWARE    DEVICE N0100"
-	$(Q) $(MAKE) MODEL=n0100 clean
-	$(Q) $(MAKE) MODEL=n0100 epsilon.official.onboarding.dfu
-	$(Q) cp output/release/device/n0100/epsilon.official.onboarding.dfu output/all_official/epsilon.device.n0100.dfu
-	$(Q) echo "BUILD_FIRMWARE    SIMULATOR WEB ZIP"
-	$(Q) $(MAKE) PLATFORM=simulator TARGET=web clean
-	$(Q) $(call source_emsdk); $(MAKE) PLATFORM=simulator TARGET=web epsilon.official.zip
-	$(Q) cp output/release/simulator/web/epsilon.official.zip output/all_official/simulator.web.zip
-	$(Q) echo "BUILD_FIRMWARE    SIMULATOR WEB JS"
-	$(Q) $(call source_emsdk); $(MAKE) PLATFORM=simulator TARGET=web epsilon.official.js
-	$(Q) cp output/release/simulator/web/epsilon.official.js output/all_official/epsilon.js
-	$(Q) echo "BUILD_FIRMWARE    SIMULATOR WEB PYTHON JS"
-	$(Q) $(MAKE) PLATFORM=simulator TARGET=web clean
-	$(Q) $(call source_emsdk); $(MAKE) PLATFORM=simulator TARGET=web EPSILON_GETOPT=1 EPSILON_APPS=code epsilon.official.js
-	$(Q) cp output/release/simulator/web/epsilon.official.js output/all_official/epsilon.python.js
-	$(Q) echo "BUILD_FIRMWARE    SIMULATOR ANDROID"
-	$(Q) $(MAKE) PLATFORM=simulator TARGET=android clean
-	$(Q) $(MAKE) PLATFORM=simulator TARGET=android epsilon.official.signed.apk
-	$(Q) cp output/release/simulator/android/app/outputs/apk/codesigned/android-codesigned.apk output/all_official/epsilon.official.apk
-	$(Q) echo "BUILD_FIRMWARE    SIMULATOR IOS"
-	$(Q) $(MAKE) PLATFORM=simulator TARGET=ios clean
-	$(Q) $(MAKE) PLATFORM=simulator TARGET=ios IOS_PROVISIONNING_PROFILE=$(IOS_MOBILE_PROVISION) output/release/simulator/ios/app/epsilon.official.ipa
-	$(Q) cp output/release/simulator/ios/app/epsilon.official.ipa output/all_official/epsilon.ipa
--- a/build/targets.device.mak
+++ b/build/targets.device.mak
@@ -3,23 +3,6 @@ include build/targets.device.$(MODEL).mak
 HANDY_TARGETS += flasher.light flasher.verbose bench.ram bench.flash
 HANDY_TARGETS_EXTENSIONS += dfu hex bin

-$(eval $(call rule_for, \
-  DFUSE, %.dfu, %.$$(EXE), \
-  $$(PYTHON) build/device/elf2dfu.py $$< $$@, \
-  with_local_version \
-))
-
-$(eval $(call rule_for, \
-  OBJCOPY, %.hex, %.$$(EXE), \
-  $$(OBJCOPY) -O ihex $$< $$@ \
-))
-
-$(eval $(call rule_for, \
-  OBJCOPY, %.bin, %.$$(EXE), \
-  $$(OBJCOPY) -O binary $$< $$@, \
-  with_local_version \
-))
-
 %_ram_map: %.$(EXE)
 	$(PYTHON) build/device/ram_map.py $(BUILD_DIR)/$<

@@ -50,19 +33,19 @@ openocd:

 # The flasher target is defined here because otherwise $(%_src) has not been
 # fully filled
+flasher_src = $(ion_src) $(ion_device_flasher_src) $(liba_src) $(kandinsky_src)
+$(BUILD_DIR)/flasher.light.$(EXE): $(call flavored_object_for,$(flasher_src),light usbxip)
+$(BUILD_DIR)/flasher.verbose.$(EXE): $(call flavored_object_for,$(flasher_src),usbxip)
 $(BUILD_DIR)/flasher.%.$(EXE): LDFLAGS += -Lion/src/$(PLATFORM)/flasher
 $(BUILD_DIR)/flasher.%.$(EXE): LDSCRIPT = ion/src/$(PLATFORM)/shared/ram.ld
-flasher_base_src = $(ion_xip_src) $(liba_src) $(kandinsky_src)
-$(BUILD_DIR)/flasher.light.$(EXE): $(call object_for,$(flasher_base_src) $(ion_target_device_flasher_light_src))
-$(BUILD_DIR)/flasher.verbose.$(EXE): $(call object_for,$(flasher_base_src) $(ion_target_device_flasher_verbose_src))

 #TODO Do not build all apps... Put elsewhere?
+bench_src = $(ion_src) $(liba_src) $(kandinsky_src) $(poincare_src) $(libaxx_src) $(app_shared_src) $(ion_device_bench_src)
+$(BUILD_DIR)/bench.ram.$(EXE): $(call flavored_object_for,$(bench_src),consoleuart usbxip)
 $(BUILD_DIR)/bench.ram.$(EXE): LDFLAGS += -Lion/src/$(PLATFORM)/bench
 $(BUILD_DIR)/bench.ram.$(EXE): LDSCRIPT = ion/src/$(PLATFORM)/shared/ram.ld
+$(BUILD_DIR)/bench.flash.$(EXE): $(call flavored_object_for,$(bench_src),consoleuart usbxip)
 $(BUILD_DIR)/bench.flash.$(EXE): LDSCRIPT = ion/src/$(PLATFORM)/$(MODEL)/internal_flash.ld
-bench_src = $(ion_xip_src) $(liba_src) $(kandinsky_src) $(poincare_src) $(libaxx_src) $(app_shared_src) $(ion_target_device_bench_src)
-$(BUILD_DIR)/bench.ram.$(EXE): $(call object_for,$(bench_src))
-$(BUILD_DIR)/bench.flash.$(EXE): $(call object_for,$(bench_src))

 .PHONY: %.two_binaries
 %.two_binaries: %.elf
--- a/build/targets.mak
+++ b/build/targets.mak
@@ -1,28 +1,78 @@
-# Define standard Epsilon targets
-base_src = $(liba_src) $(kandinsky_src) $(escher_src) $(libaxx_src) $(poincare_src) $(python_src)
-
-epsilon_src = $(base_src) $(ion_default_src) $(apps_default_src)
-epsilon_official_src = $(base_src) $(ion_default_src) $(apps_official_default_src)
-
-$(BUILD_DIR)/epsilon.$(EXE): $(call object_for,$(epsilon_src))
-$(BUILD_DIR)/epsilon.official.$(EXE): $(call object_for,$(epsilon_official_src))
-$(BUILD_DIR)/epsilon.onboarding.$(EXE): $(call object_for, $(base_src) $(ion_default_src) $(apps_onboarding_src))
-$(BUILD_DIR)/epsilon.official.onboarding.$(EXE): $(call object_for,$(base_src) $(ion_default_src) $(apps_official_onboarding_src))
-$(BUILD_DIR)/epsilon.onboarding.update.$(EXE): $(call object_for, $(base_src) $(ion_default_src) $(apps_onboarding_update_src))
-$(BUILD_DIR)/epsilon.official.onboarding.update.$(EXE): $(call object_for,$(base_src) $(ion_default_src) $(apps_official_onboarding_update_src))
-$(BUILD_DIR)/epsilon.onboarding.beta.$(EXE): $(call object_for, $(base_src) $(ion_default_src) $(apps_onboarding_beta_src))
-$(BUILD_DIR)/epsilon.official.onboarding.beta.$(EXE): $(call object_for,$(base_src) $(ion_default_src) $(apps_official_onboarding_beta_src))
-
-test_base_src = $(base_src) $(apps_tests_src) $(runner_src) $(tests_src)
-
-test_runner_src = $(test_base_src) $(ion_console_on_screen_src)
-$(BUILD_DIR)/test.$(EXE): $(call object_for,$(test_runner_src))
-
 # Define handy targets
 # Those can be built easily by simply invoking "make target.ext". The named file
 # will be built in $(BUILD_DIR).

-HANDY_TARGETS += epsilon epsilon.official epsilon.onboarding epsilon.official.onboarding epsilon.onboarding.update epsilon.official.onboarding.update epsilon.onboarding.beta epsilon.official.onboarding.beta test
+HANDY_TARGETS ?=
+HANDY_TARGETS_EXTENSIONS ?=
+
+# Epsilon base target
+
+base_src = $(ion_src) $(liba_src) $(kandinsky_src) $(escher_src) $(libaxx_src) $(poincare_src) $(python_src)
+
+epsilon_src = $(base_src) $(apps_src)
+
+$(BUILD_DIR)/epsilon.$(EXE): $(call flavored_object_for,$(epsilon_src))
+
+HANDY_TARGETS += epsilon
+
+# Epsilon flavored targets
+
+epsilon_flavors = \
+  onboarding \
+  onboarding.update \
+  onboarding.beta
+
+define rule_for_epsilon_flavor
+$$(BUILD_DIR)/epsilon.$(1).$$(EXE): $$(call flavored_object_for,$$(epsilon_src),$(1))
+endef
+
+$(foreach flavor,$(epsilon_flavors),$(eval $(call rule_for_epsilon_flavor,$(flavor))))
+
+HANDY_TARGETS += $(foreach flavor,$(epsilon_flavors),epsilon.$(flavor))
+
+# Epsilon official targets
+
+epsilon_official_flavors = \
+  official \
+  official.onboarding \
+  official.onboarding.update \
+  official.onboarding.beta
+
+define rule_for_unconfirmed_official_flavor
+$$(BUILD_DIR)/epsilon.$(1).$$(EXE):
+	@echo "CAUTION: You are trying to build an official NumWorks firmware."
+	@echo "Distribution of such firmware by a third party is prohibited."
+	@echo "Please set the ACCEPT_OFFICIAL_TOS environment variable to proceed."
+	@exit -1
+endef
+
+ifeq ($(ACCEPT_OFFICIAL_TOS),1)
+rule_for_official_epsilon_flavor = rule_for_epsilon_flavor
+else
+rule_for_official_epsilon_flavor = rule_for_unconfirmed_official_flavor
+endif
+
+$(foreach flavor,$(epsilon_official_flavors),$(eval $(call $(rule_for_official_epsilon_flavor),$(flavor))))
+
+HANDY_TARGETS += $(foreach flavor,$(epsilon_official_flavors),epsilon.$(flavor))
+
+# Test
+
+test_runner_src = $(base_src) $(apps_tests_src) $(runner_src) $(tests_src)
+
+$(BUILD_DIR)/test.$(EXE): $(call flavored_object_for,$(test_runner_src),consoledisplay)
+
+HANDY_TARGETS += test
+
+# Load platform-specific targets
+# We include them before the standard ones to give them precedence.
+-include build/targets.$(PLATFORM).mak
+
+# Generate handy targets rules
+# Define handy targets
+# Those can be built easily by simply invoking "make target.ext". The named file
+# will be built in $(BUILD_DIR).
+
 HANDY_TARGETS_EXTENSIONS += $(EXE)

 define handy_target_rule
@@ -30,10 +80,4 @@ define handy_target_rule
 $(1).$(2): $$(BUILD_DIR)/$(1).$(2)
 endef

-# Load platform-specific targets
-# We include them before the standard ones to give them precedence.
-include build/targets.$(PLATFORM).mak
-
 $(foreach extension,$(HANDY_TARGETS_EXTENSIONS),$(foreach executable,$(HANDY_TARGETS),$(eval $(call handy_target_rule,$(executable),$(extension)))))
-
-include build/targets.all.mak
--- a/build/targets.simulator.android.mak
+++ b/build/targets.simulator.android.mak
@@ -1,3 +1,4 @@
-ifndef ARCH
-HANDY_TARGETS_EXTENSIONS += apk
-endif
+.PHONY: %_run
+%_run: $(BUILD_DIR)/%.apk
+	$(call rule_label,ADB)
+	$(Q) adb install $<
--- a/build/targets.simulator.ios.mak
+++ b/build/targets.simulator.ios.mak
@@ -0,0 +1,6 @@
+ifeq ($(APPLE_PLATFORM),ios-simulator)
+.PHONY: %_run
+%_run: $(BUILD_DIR)/%.app
+	$(call rule_label,XCRUN)
+	$(Q) xcrun simctl install booted $^
+endif
--- a/build/targets.simulator.mak
+++ b/build/targets.simulator.mak
@@ -1,10 +1,8 @@
 # Headless targets
-epsilon_headless_src = $(base_src) $(ion_headless_src) $(apps_default_src)
-$(BUILD_DIR)/epsilon.headless.$(EXE): $(call object_for,$(epsilon_headless_src))
+$(eval $(call rule_for_epsilon_flavor,headless))
+HANDY_TARGETS += epsilon.headless

-test_runner_headless_src = $(test_base_src) $(ion_headless_src)
-$(BUILD_DIR)/test.headless.$(EXE): $(call object_for,$(test_runner_headless_src))
-
-HANDY_TARGETS += epsilon.headless test.headless
+$(BUILD_DIR)/test.headless.$(EXE): $(call flavored_object_for,$(test_runner_src),headless)
+HANDY_TARGETS += test.headless

 -include build/targets.simulator.$(TARGET).mak
--- a/build/targets.simulator.web.mak
+++ b/build/targets.simulator.web.mak
@@ -1,3 +1 @@
-HANDY_TARGETS_EXTENSIONS += zip
-
 $(BUILD_DIR)/test.headless.js: EMSCRIPTEN_MODULARIZE = 0
--- a/build/variants.mak
+++ b/build/variants.mak
@@ -0,0 +1,63 @@
+# Helper functions to work with variants
+# Make variants_test for an example
+
+define available_variants_in
+$(sort $(patsubst +%,%,$(filter +%,$(subst :, ,$(1)))))
+endef
+
+define without_any_variant_specifier
+$(filter-out $(foreach variant,$(call available_variants_in,$(1)),%:-$(variant) %:+$(variant)),$(1))
+endef
+
+define with_variant_specifier_matching
+$(foreach variant,$(3),$(patsubst %:$(1)$(variant),%,$(filter %:$(1)$(variant),$(2))))
+endef
+
+define without_any_variant_specifier_matching
+$(filter-out \
+  $(call with_variant_specifier_matching,$(1),$(2),$(3)), \
+  $(foreach variant,$(call available_variants_in,$(2)),$(call with_variant_specifier_matching,$(1),$(2),$(variant))) \
+)
+endef
+
+# Return files in $(1) that match the variant $(2)
+define filter_variants
+$(sort \
+  $(call without_any_variant_specifier,$(1)) \
+  $(call with_variant_specifier_matching,+,$(1),$(2)) \
+  $(call without_any_variant_specifier_matching,-,$(1),$(2)) \
+)
+endef
+
+# Return all files in $(1) no matter their variant
+define any_variant
+$(sort $(filter-out -%,$(filter-out +%,$(subst :, ,$(1)))))
+endef
+
+# Examples
+
+variants_test_src = base.cpp
+variants_test_src += color/green.cpp:+green
+variants_test_src += color/red.cpp:+red
+variants_test_src += color/blue.cpp:-red
+variants_test_src += color/blue.cpp:-green
+variants_test_src += engine/fast.cpp:+nitro
+variants_test_src += engine/slow.cpp:-nitro
+
+.PHONY: variants_test
+variants_test:
+	$(info AVAILABLE_VARIANTS_IN)
+	$(info --result:   $(call available_variants_in,$(variants_test_src),))
+	$(info --expected: green nitro red)
+	$(info FILTER_VARIANTS)
+	$(info --result:   $(call filter_variants,$(variants_test_src),))
+	$(info --expected: base.cpp color/blue.cpp engine/slow.cpp)
+	$(info FILTER_VARIANTS red)
+	$(info --result:   $(call filter_variants,$(variants_test_src),red))
+	$(info --expected: base.cpp color/red.cpp engine/slow.cpp)
+	$(info FILTER_VARIANTS green speed)
+	$(info --result:   $(call filter_variants,$(variants_test_src),green nitro))
+	$(info --expected: base.cpp color/green.cpp engine/fast.cpp)
+	$(info ANY_VARIANT)
+	$(info --result:   $(call any_variant,$(variants_test_src)))
+	$(info --expected: base.cpp color/blue.cpp color/green.cpp color/red.cpp engine/fast.cpp engine/slow.cpp)
--- a/escher/Makefile
+++ b/escher/Makefile
@@ -94,14 +94,16 @@ $(eval $(call rule_for, \
  HOSTCC, \
  escher/image/inliner, \
  escher/image/inliner.c $(addprefix ion/src/external/lz4/, lz4.c lz4hc.c), \
-  $$(HOSTCC) -std=c99 `libpng-config --cflags` $$^ `libpng-config --ldflags` -o $$@ \
+  $$(HOSTCC) -std=c99 `libpng-config --cflags` $$^ `libpng-config --ldflags` -o $$@, \
+  global \
 ))

 $(eval $(call rule_for, \
  THEME, \
  escher/palette.h, \
  $(addprefix themes/themes/, $(addsuffix .json, $(OMEGA_THEME))), \
-  $$(PYTHON) themes/themes_manager.py $(OMEGA_THEME) $$@ \
+  $$(PYTHON) themes/themes_manager.py $(OMEGA_THEME) $$@, \
+  global \
 ))

 INLINER := $(BUILD_DIR)/escher/image/inliner
@@ -111,7 +113,8 @@ $(eval $(call rule_for, \
  INLINER, \
  %.h %.cpp, \
  $(BUILD_DIR)/%.png $$(INLINER), \
-  $$(INLINER) $$< $$(basename $$@).h $$(basename $$@).cpp \
+  $$(INLINER) $$< $$(basename $$@).h $$(basename $$@).cpp, \
+  global \
 ))

 # Mark a .cpp file as depending on a .png one
--- a/escher/include/escher/i18n.h
+++ b/escher/include/escher/i18n.h
@@ -6,7 +6,7 @@
 namespace I18n {
  enum class Message : uint16_t;
  enum class Language : uint16_t;
-  const char * translate(Message m, Language l = (Language)0);
+  const char * translate(Message m);
  int numberOfLanguages();
 }

--- a/ion/Makefile
+++ b/ion/Makefile
@@ -15,8 +15,6 @@ include ion/src/$(PLATFORM)/Makefile
 -include ion/test/$(PLATFORM)/Makefile
 include ion/src/shared/tools/Makefile

-ion_console_display_src += ion/src/shared/console_display.cpp
-
 # We need to work around a GCC bug (concerning versions < 5.1). It is valid in
 # C++11 to initialize a character array by providing a string litteral (e.g.
 # char test[4]= "ab"; is valid and should initialize test to 'a','b',0,0).
@@ -25,10 +23,13 @@ initializer_list = $(shell echo $(1) | sed  "s/\(.\)/'\1',/g")0
 $(call object_for,ion/src/shared/platform_info.cpp): SFLAGS += -DPATCH_LEVEL="$(call initializer_list,$(PATCH_LEVEL))" -DEPSILON_VERSION="$(call initializer_list,$(EPSILON_VERSION))" -DEPSILON_CUSTOM_VERSION="$(call initializer_list,$(EPSILON_CUSTOM_VERSION))" -DUSERNAME="$(call initializer_list,$(USERNAME))" 

 ion_src += $(addprefix ion/src/shared/, \
+  console_display.cpp:+consoledisplay \
  console_line.cpp \
  crc32_eat_byte.cpp \
  decompress.cpp \
  events.cpp \
+  events_keyboard.cpp \
+  events_modifier.cpp \
  platform_info.cpp \
  storage.cpp \
  unicode/utf8_decoder.cpp\
@@ -49,14 +50,3 @@ tests_src += $(addprefix ion/test/,\
 ifdef ION_STORAGE_LOG
 SFLAGS += -DION_STORAGE_LOG=1
 endif
-
-# Configure variants
-ion_all_src = $(ion_src)
-ion_all_src += $(ion_simulator_sdl_src) $(ion_simulator_headless_src)
-ion_all_src += $(ion_device_dfu_relocated_src) $(ion_device_dfu_xip_src)
-ion_all_src += $(ion_console_display_src) $(ion_console_stdio_src) $(ion_console_uart_src)
-
-ion_default_src = $(ion_src) $(ion_simulator_sdl_src) $(ion_device_dfu_relocated_src) $(ion_console_stdio_src)
-ion_console_on_screen_src = $(ion_src) $(ion_simulator_sdl_src) $(ion_device_dfu_relocated_src) $(ion_console_display_src)
-ion_xip_src = $(ion_src) $(ion_simulator_sdl_src) $(ion_device_dfu_xip_src) $(ion_console_uart_src)
-ion_headless_src = $(ion_src) $(ion_simulator_headless_src) $(ion_device_dfu_relocated_src) $(ion_console_stdio_src)
--- a/ion/include/ion/timing.h
+++ b/ion/include/ion/timing.h
@@ -11,7 +11,7 @@ void msleep(uint32_t ms);

 /* millis is the number of milliseconds ellapsed since a random epoch.
 * On the device, epoch is the boot time. */
-volatile uint64_t millis();
+uint64_t millis();

 }
 }
--- a/ion/src/device/Makefile
+++ b/ion/src/device/Makefile
@@ -6,22 +6,12 @@ include ion/src/device/$(MODEL)/Makefile

 $(call object_for,ion/src/shared/platform_info.cpp): SFLAGS += -DHEADER_SECTION="__attribute__((section(\".header\")))"

-ion_src += $(addprefix ion/src/shared/, \
-  console_line.cpp \
-  events_keyboard.cpp \
-  events_modifier.cpp \
-)
-
 ifeq ($(EPSILON_TELEMETRY),1)
 ion_src += ion/src/shared/telemetry_console.cpp
 endif

-# If you need to benchmark execution, you can replace events_keyboard with
-# events_benchmark.
-# If you need to profile execution, you can replace events_keyboard with
-# events_replay.o and dummy/events_modifier.o
-
 ION_DEVICE_SFLAGS = -Iion/src/device/$(MODEL) -Iion/src/device/shared

-$(call object_for,$(sort $(ion_device_src) $(dfu_src) $(ion_target_device_flasher_light_src) $(ion_target_device_flasher_verbose_src) $(usb_src) $(ion_target_device_bench_src) $(ion_device_dfu_xip_src) $(ion_device_dfu_relocated_src) $(ion_console_uart_src))): SFLAGS += $(ION_DEVICE_SFLAGS)
+$(call object_for,$(ion_device_src) $(ion_device_flasher_src) $(ion_device_bench_src)): SFLAGS += $(ION_DEVICE_SFLAGS)
+
 ion_src += $(ion_device_src)
--- a/ion/src/device/bench/Makefile
+++ b/ion/src/device/bench/Makefile
@@ -1,11 +1,11 @@
-ion_target_device_bench_src += $(addprefix ion/src/device/bench/, \
+ion_device_bench_src += $(addprefix ion/src/device/bench/, \
  bench.cpp \
  command_handler.cpp \
  command_list.cpp \
  runner.cpp \
 )

-ion_target_device_bench_src += $(addprefix ion/src/device/bench/command/, \
+ion_device_bench_src += $(addprefix ion/src/device/bench/command/, \
  adc.cpp \
  backlight.cpp \
  charge.cpp \
--- a/ion/src/device/flasher/Makefile
+++ b/ion/src/device/flasher/Makefile
@@ -1,9 +1,5 @@
-ion_target_device_flasher_light_src = $(addprefix ion/src/device/flasher/, \
+ion_device_flasher_src = $(addprefix ion/src/device/flasher/, \
  main.cpp \
-  display_light.cpp \
-)
-
-ion_target_device_flasher_verbose_src = $(addprefix ion/src/device/flasher/, \
-  main.cpp \
-  display_verbose.cpp \
+  display_light.cpp:+light \
+  display_verbose.cpp:-light \
 )
--- a/ion/src/device/shared/boot/rt0.cpp
+++ b/ion/src/device/shared/boot/rt0.cpp
@@ -119,5 +119,7 @@ void __attribute__((noinline)) start() {
 }

 void __attribute__((interrupt, noinline)) isr_systick() {
-  Ion::Device::Timing::MillisElapsed++;
+  auto t = Ion::Device::Timing::MillisElapsed;
+  t++;
+  Ion::Device::Timing::MillisElapsed = t;
 }
--- a/ion/src/device/shared/drivers/Makefile
+++ b/ion/src/device/shared/drivers/Makefile
@@ -3,6 +3,8 @@ ion_device_src += $(addprefix ion/src/device/shared/drivers/, \
  battery.cpp \
  base64.cpp \
  board.cpp \
+  console_uart.cpp:+consoleuart \
+  console_dummy.cpp:-consoleuart \
  crc32.cpp \
  display.cpp \
  events_keyboard_platform.cpp \
@@ -21,7 +23,3 @@ ion_device_src += $(addprefix ion/src/device/shared/drivers/, \
  usb.cpp \
  wakeup.cpp \
 )
-
-ion_console_uart_src = ion/src/device/shared/drivers/console.cpp
-ion_console_stdio_src += ion/src/device/shared/drivers/console_dummy.cpp
-ion_console_display_src += ion/src/device/shared/drivers/console_dummy.cpp
--- a/ion/src/device/shared/drivers/console_uart.cpp
+++ b/ion/src/device/shared/drivers/console_uart.cpp
--- a/ion/src/device/shared/drivers/timing.cpp
+++ b/ion/src/device/shared/drivers/timing.cpp
@@ -29,7 +29,7 @@ void usleep(uint32_t us) {
  }
 }

-volatile uint64_t millis() {
+uint64_t millis() {
  return MillisElapsed;
 }

--- a/ion/src/device/shared/usb/Makefile
+++ b/ion/src/device/shared/usb/Makefile
@@ -1,9 +1,11 @@
-usb_src += $(addprefix ion/src/device/shared/usb/, \
+# USB code
+
+ion_device_usb_src += $(addprefix ion/src/device/shared/usb/, \
  calculator.cpp \
  dfu_interface.cpp\
 )

-usb_src += $(addprefix ion/src/device/shared/usb/stack/, \
+ion_device_usb_src += $(addprefix ion/src/device/shared/usb/stack/, \
  device.cpp\
  endpoint0.cpp \
  interface.cpp\
@@ -12,7 +14,7 @@ usb_src += $(addprefix ion/src/device/shared/usb/stack/, \
  streamable.cpp\
 )

-usb_src += $(addprefix ion/src/device/shared/usb/stack/descriptor/, \
+ion_device_usb_src += $(addprefix ion/src/device/shared/usb/stack/descriptor/, \
  bos_descriptor.cpp\
  configuration_descriptor.cpp \
  descriptor.cpp\
@@ -29,27 +31,24 @@ usb_src += $(addprefix ion/src/device/shared/usb/stack/descriptor/, \
  webusb_platform_descriptor.cpp\
 )

-# Sources required to execute DFU in place
-ion_device_dfu_xip_src += ion/src/device/shared/usb/dfu_xip.cpp
-ion_device_dfu_xip_src += $(usb_src)
+# DFU code

-# Sources required to execute DFU in RAM
-dfu_src += liba/src/assert.c
-dfu_src += liba/src/strlen.c
-dfu_src += liba/src/strlcpy.c
-dfu_src += liba/src/memset.c
-dfu_src += liba/src/memcpy.c
-dfu_src += libaxx/src/cxxabi/pure_virtual.cpp
-dfu_src += ion/src/device/shared/usb/boot.cpp
-dfu_src += ion/src/device/$(MODEL)/drivers/board.cpp
-dfu_src += ion/src/device/$(MODEL)/drivers/cache.cpp
-dfu_src += ion/src/device/$(MODEL)/drivers/reset.cpp
-dfu_src += $(addprefix ion/src/device/shared/drivers/, \
+ion_device_dfu_src += liba/src/assert.c
+ion_device_dfu_src += liba/src/strlen.c
+ion_device_dfu_src += liba/src/strlcpy.c
+ion_device_dfu_src += liba/src/memset.c
+ion_device_dfu_src += liba/src/memcpy.c
+ion_device_dfu_src += libaxx/src/cxxabi/pure_virtual.cpp
+ion_device_dfu_src += ion/src/device/shared/usb/boot.cpp
+ion_device_dfu_src += ion/src/device/$(MODEL)/drivers/board.cpp
+ion_device_dfu_src += ion/src/device/$(MODEL)/drivers/cache.cpp
+ion_device_dfu_src += ion/src/device/$(MODEL)/drivers/reset.cpp
+ion_device_dfu_src += $(addprefix ion/src/device/shared/drivers/, \
  backlight.cpp \
  battery.cpp \
  base64.cpp \
  board.cpp \
-  console.cpp \
+  console_uart.cpp \
  crc32.cpp \
  display.cpp \
  events_keyboard_platform.cpp \
@@ -68,8 +67,14 @@ dfu_src += $(addprefix ion/src/device/shared/drivers/, \
  wakeup.cpp \
 )

+# Sources required to execute DFU in place
+ion_device_src += ion/src/device/shared/usb/dfu_xip.cpp:+usbxip
+ion_device_src += $(addsuffix :+usbxip,$(ion_device_usb_src))
+
+# Sources required to execute DFU in RAM
+
 $(BUILD_DIR)/ion/src/device/shared/usb/dfu.elf: LDSCRIPT = ion/src/device/shared/usb/dfu.ld
-$(BUILD_DIR)/ion/src/device/shared/usb/dfu.elf: $(call object_for,$(usb_src) $(dfu_src))
+$(BUILD_DIR)/ion/src/device/shared/usb/dfu.elf: $(call object_for,$(ion_device_usb_src) $(ion_device_dfu_src))

 # In order to link the dfu bootloader inside the epsilon firmware, we need to
 # turn the dfu binary (dfu.bin) into an elf object.
@@ -83,5 +88,5 @@ $(BUILD_DIR)/ion/src/device/shared/usb/dfu.o: $(BUILD_DIR)/ion/src/device/shared
 	$(call rule_label,OBJCOPY)
 	$(Q) cd $(dir $<) ; $(OBJCOPY) -I binary -O elf32-littlearm -B arm --rename-section .data=.rodata.dfu_bootloader --redefine-sym _binary_dfu_bin_start=_dfu_bootloader_flash_start --redefine-sym _binary_dfu_bin_end=_dfu_bootloader_flash_end $(notdir $<) $(notdir $@)

-ion_device_dfu_relocated_src += ion/src/device/shared/usb/dfu.cpp
-ion_device_dfu_relocated_src += ion/src/device/shared/usb/dfu_relocated.cpp
+ion_device_src += ion/src/device/shared/usb/dfu.cpp:-usbxip
+ion_device_src += ion/src/device/shared/usb/dfu_relocated.cpp:-usbxip
--- a/ion/src/shared/timing.cpp
+++ b/ion/src/shared/timing.cpp
@@ -3,7 +3,7 @@

 static auto start = std::chrono::steady_clock::now();

-volatile uint64_t Ion::Timing::millis() {
+uint64_t Ion::Timing::millis() {
  auto elapsed = std::chrono::steady_clock::now() - start;
  return std::chrono::duration_cast<std::chrono::milliseconds>(elapsed).count();
 }
--- a/ion/src/simulator/Makefile
+++ b/ion/src/simulator/Makefile
@@ -1,9 +1,5 @@
-# TODO
 ion_src += $(addprefix ion/src/shared/, \
  crc32.cpp \
-  events.cpp \
-  events_keyboard.cpp \
-  events_modifier.cpp \
  power.cpp \
  random.cpp \
  timing.cpp \
@@ -18,24 +14,19 @@ ion_src += $(addprefix ion/src/shared/, \
  dummy/usb.cpp \
 )

-ion_simulator_sdl_src += $(addprefix ion/src/simulator/shared/, \
-  display.cpp \
-  events_keyboard.cpp \
+ion_src += $(addprefix ion/src/simulator/shared/, \
+  console_stdio.cpp:-consoledisplay \
+  display.cpp:-headless \
+  events_keyboard.cpp:-headless \
+  events_stdin.cpp:+headless \
  framebuffer_base.cpp \
-  keyboard_sdl.cpp \
-  main_sdl.cpp \
-  layout.cpp \
+  framebuffer_png.cpp:+headless \
+  keyboard_dummy.cpp:+headless \
+  keyboard_sdl.cpp:-headless \
+  layout.cpp:-headless \
+  main_headless.cpp:+headless \
+  main_sdl.cpp:-headless \
 )

-ion_simulator_headless_src += $(addprefix ion/src/simulator/shared/, \
-  events_stdin.cpp \
-  framebuffer_base.cpp \
-  framebuffer_png.cpp \
-  keyboard_dummy.cpp \
-  main_headless.cpp \
-)
-
-ion_console_stdio_src = ion/src/simulator/shared/console_stdio.cpp
-
 include ion/src/simulator/$(TARGET)/Makefile
 include ion/src/simulator/external/Makefile
--- a/ion/src/simulator/android/Makefile
+++ b/ion/src/simulator/android/Makefile
@@ -11,7 +11,6 @@ $(call object_for,ion/src/simulator/shared/main.cpp) : SFLAGS += -DEPSILON_SDL_F

 LDFLAGS += -ljnigraphics -llog

-
 # If ARCH is not defined, we will re-trigger a build for each avaialble ARCH.
 # This is used to build APKs, which needs to embbed a binary for each ARCH.

@@ -33,17 +32,6 @@ $(BUILD_DIR)/app/res/%.xml: ion/src/simulator/android/src/res/%.xml | $$(@D)/.
 	$(call rule_label,COPY)
 	$(Q) cp $< $@

-# This rule allow us to build any executable (%) for a specified ARCH ($1)
-# We depend on a phony target to make sure this rule is always executed
-
-.PHONY: force_remake
-define rule_for_arch_executable
-.PRECIOUS: $$(BUILD_DIR)/$(1)/%.so
-$$(BUILD_DIR)/$(1)/%.so: force_remake
-	$(Q) echo "MAKE ARCH=$(1) $$*.so"
-	$(Q) $$(MAKE) ARCH=$(1) --silent $$*.so
-endef
-
 # We need to put the .so files somewhere Gradle can pick them up.
 # We decided to use the location "app/libs/$EXECUTABLE/$ARCH/libepsilon.so"
 # This way it's easy to import the shared object from Java code (it's always
@@ -58,7 +46,6 @@ $(call path_for_arch_jni_lib,$(1)): $$(BUILD_DIR)/$(1)/%.so | $$$$(@D)/.
 	$(Q) cp $$< $$@
 endef

-$(foreach ARCH,$(ARCHS),$(eval $(call rule_for_arch_executable,$(ARCH))))
 $(foreach ARCH,$(ARCHS),$(eval $(call rule_for_arch_jni_lib,$(ARCH))))

 apk_deps = $(foreach ARCH,$(ARCHS),$(call path_for_arch_jni_lib,$(ARCH)))
@@ -68,15 +55,8 @@ apk_deps += $(addprefix $(BUILD_DIR)/app/res/,mipmap/ic_launcher.png mipmap-v26/
 .PRECIOUS: $(apk_deps)

 $(BUILD_DIR)/%.apk: $(apk_deps)
-	@echo "GRADLE ion/src/simulator/android/build.gradle"
+	$(call rule_label,GRADLE)
 	$(Q) ANDROID_HOME=$(ANDROID_HOME) EPSILON_VERSION=$(EPSILON_VERSION) BUILD_DIR=$(BUILD_DIR) EPSILON_VARIANT=$* ion/src/simulator/android/gradlew -b ion/src/simulator/android/build.gradle assembleRelease
 	$(Q) cp $(BUILD_DIR)/app/outputs/apk/release/android-release*.apk $@

-DEFAULT = epsilon.apk
-
-.PHONY: %_run
-%_run: $(BUILD_DIR)/%.apk
-	@echo "ADB     $*.apk"
-	$(Q) adb install $<
-
 endif
--- a/ion/src/simulator/ios/Makefile
+++ b/ion/src/simulator/ios/Makefile
@@ -26,6 +26,8 @@ LDFLAGS += -framework CoreData
 LDFLAGS += -Lion/src/simulator/ios/GoogleAnalyticsServices
 endif

+ifndef ARCH
+
 # App resources

 SIMULATOR_ICON_SIZES = 20x20 29x29 40x40 40x40 40x40 58x58 58x58 60x60 76x76 \
@@ -33,9 +35,9 @@ SIMULATOR_ICON_SIZES = 20x20 29x29 40x40 40x40 40x40 58x58 58x58 60x60 76x76 \
 SIMULATOR_ASSETS_PATH = $(BUILD_DIR)/app/assets/Assets.xcassets
 SIMULATOR_ICONSET = $(SIMULATOR_ASSETS_PATH)/AppIcon.appiconset

-include ion/src/simulator/shared/apple/Makefile
+include ion/src/simulator/shared/apple/helpers.mak

-$(call simulator_app_plist,%,Info.plist): ion/src/simulator/ios/Info.plist $(call simulator_app_resource,%,Assets.car)
+$(call simulator_app_plist,Info.plist): ion/src/simulator/ios/Info.plist $(call simulator_app_resource,Assets.car)
 	$(call rule_label,PLUTIL)
 	$(Q) cp $< $@
 	$(Q) plutil -insert "BuildMachineOSBuild" -string "$(IOS_BUILD_MACHINE_OS_BUILD)" $@
@@ -54,12 +56,12 @@ $(call simulator_app_plist,%,Info.plist): ion/src/simulator/ios/Info.plist $(cal
 	$(Q) plutil -replace CFBundleIcons -json `plutil -extract CFBundleIcons json -o - $(BUILD_DIR)/app/assets/partial.plist` $@
 	$(Q) plutil -replace CFBundleIcons~ipad -json `plutil -extract CFBundleIcons~ipad json -o - $(BUILD_DIR)/app/assets/partial.plist` $@

-$(call simulator_app_resource,%,launch.storyboardc): ion/src/simulator/ios/launch.storyboard | $$(@D)/.
+$(call simulator_app_resource,launch.storyboardc): ion/src/simulator/ios/launch.storyboard | $$(@D)/.
 	$(call rule_label,IBTOOL)
 	$(Q) $(IBTOOL) --minimum-deployment-target $(APPLE_PLATFORM_MIN_VERSION) --compile $@ $^

 ifdef IOS_PROVISIONNING_PROFILE
-$(call simulator_app_resource,%,embedded.mobileprovision): $(IOS_PROVISIONNING_PROFILE) | $$(@D)/.
+$(call simulator_app_resource,embedded.mobileprovision): $(IOS_PROVISIONNING_PROFILE) | $$(@D)/.
 	$(call rule_label,COPY)
 	$(Q) cp $^ $@

@@ -68,9 +70,9 @@ $(BUILD_DIR)/app/entitlements.plist: $(IOS_PROVISIONNING_PROFILE)
 	$(Q) security cms -D -i $(IOS_PROVISIONNING_PROFILE) | plutil -extract Entitlements xml1 - -o $@

 simulator_app_deps += $(BUILD_DIR)/app/entitlements.plist
-simulator_app_deps += $(call simulator_app_resource,$1,embedded.mobileprovision)
+simulator_app_deps += $(call simulator_app_resource,embedded.mobileprovision)
 else
-$(call simulator_app_resource,%,embedded.mobileprovision):
+$(call simulator_app_resource,embedded.mobileprovision):
 	$(warning Building without a provisionning profile. Please define IOS_PROVISIONNING_PROFILE to point to the .mobileprovision file you want to use.)
 endif

@@ -78,29 +80,13 @@ $(SIMULATOR_ICONSET)/Contents.json: ion/src/simulator/ios/icon_assets.json $(SIM
 	$(call rule_label,COPY)
 	$(Q) cp $< $@

-$(call simulator_app_resource,%,Assets.car): $(SIMULATOR_ICONSET)/Contents.json | $$(@D)/.
+$(call simulator_app_resource,Assets.car): $(SIMULATOR_ICONSET)/Contents.json | $$(@D)/.
 	$(call rule_label,ACTOOL)
-	$(Q) $(ACTOOL) --compile $(BUILD_DIR)/app/Payload/$*.app --minimum-deployment-target $(APPLE_PLATFORM_MIN_VERSION) --platform $(APPLE_SDK) --app-icon AppIcon --output-partial-info-plist $(BUILD_DIR)/app/assets/partial.plist $(SIMULATOR_ASSETS_PATH) > /dev/null
+	$(Q) $(ACTOOL) --compile $(BUILD_DIR)/$*.app --minimum-deployment-target $(APPLE_PLATFORM_MIN_VERSION) --platform $(APPLE_SDK) --app-icon AppIcon --output-partial-info-plist $(BUILD_DIR)/app/assets/partial.plist $(SIMULATOR_ASSETS_PATH) > /dev/null

-simulator_app_deps += $(call simulator_app_resource,$(1), \
-  Assets.car \
-  launch.storyboardc \
-)
+simulator_app_deps += $(call simulator_app_resource,Assets.car)
+simulator_app_deps += $(call simulator_app_resource,launch.storyboardc)
+
+include ion/src/simulator/shared/apple/targets.mak

-$(BUILD_DIR)/app/epsilon%ipa: $$(subst ..,.,$$(call simulator_app_deps,Epsilon$$*))
-ifdef IOS_PROVISIONNING_PROFILE
-	$(call rule_label,SIGN)
-	$(Q) codesign --force --entitlements $(BUILD_DIR)/app/entitlements.plist --sign "Apple Distribution: NumWorks" $(BUILD_DIR)/app/Payload/Epsilon$*app
-endif
-	$(call rule_label,ZIP)
-	$(Q) cd $(dir $@) ; zip -qr9 $(notdir $@) Payload
-
-ifndef ARCH
-DEFAULT := $(BUILD_DIR)/app/epsilon.ipa
-endif
-
-ifeq ($(APPLE_PLATFORM),ios-simulator)
-.PHONY: epsilon%run
-epsilon%run: $(subst _.,.,$(call simulator_app_deps,Epsilon$*))
-	xcrun simctl install booted $(BUILD_DIR)/app/Payload/Epsilon$(subst _,.,$*)app
 endif
--- a/ion/src/simulator/macos/Makefile
+++ b/ion/src/simulator/macos/Makefile
@@ -12,6 +12,8 @@ ion_src += ion/src/simulator/shared/dummy/telemetry_init.cpp
 ion_src += ion/src/shared/telemetry_console.cpp
 endif

+ifndef ARCH
+
 # App resources

 SIMULATOR_ICON_SIZES = 16x16 32x32 64x64 128x128 256x256 512x512 1024x1024
@@ -20,9 +22,9 @@ SIMULATOR_APP_RESOURCE_PATH = Contents/Resources/
 SIMULATOR_APP_PLIST_PATH = Contents/
 SIMULATOR_ICONSET = $(BUILD_DIR)/app/assets/app.iconset

-include ion/src/simulator/shared/apple/Makefile
+include ion/src/simulator/shared/apple/helpers.mak

-$(call simulator_app_plist,%,Info.plist): ion/src/simulator/macos/Info.plist
+$(call simulator_app_plist,Info.plist): ion/src/simulator/macos/Info.plist | $$(@D)/.
 	$(call rule_label,PLUTIL)
 	$(Q) cp $< $@
 	$(Q) plutil -insert "LSMinimumSystemVersion" -string "$(MACOS_MIN_VERSION)" $@
@@ -33,19 +35,12 @@ $(call simulator_app_plist,%,Info.plist): ion/src/simulator/macos/Info.plist

 .SECONDARY: $(SIMULATOR_ICONS) | $$(@D)/.

-$(call simulator_app_resource,%,app.icns): $(SIMULATOR_ICONS) | $$(@D)/.
+$(call simulator_app_resource,app.icns): $(SIMULATOR_ICONS) | $$(@D)/.
 	$(call rule_label,ICNUTIL)
 	$(Q) iconutil --convert icns --output $@ $(SIMULATOR_ICONSET)

-simulator_app_deps += $(call simulator_app_resource,$(1),app.icns)
+simulator_app_deps += $(call simulator_app_resource,app.icns)

-simulator_app_deps_unofficial = $(call simulator_app_deps,Epsilon)
-simulator_app_deps_official = $(call simulator_app_deps,Epsilon.official)
+include ion/src/simulator/shared/apple/targets.mak

-.PHONY: Epsilon.app Epsilon.official.app
-Epsilon.app: $(simulator_app_deps_unofficial)
-Epsilon.official.app: $(simulator_app_deps_official)
-
-ifndef ARCH
-DEFAULT := Epsilon.app
 endif
--- a/ion/src/simulator/shared/apple/Makefile
+++ b/ion/src/simulator/shared/apple/Makefile
@@ -1,59 +0,0 @@
-# This file contains all the recipies shared between iOS and macOS.
-# The only things that have to be customized per platform are the icons and the
-# Info.plist.
-
-SIMULATOR_APP_PATH = $(BUILD_DIR)/app/Payload
-
-simulator_app_binary = $(addprefix $(SIMULATOR_APP_PATH)/$(1).app/$(SIMULATOR_APP_BINARY_PATH),$(2))
-simulator_app_resource = $(addprefix $(SIMULATOR_APP_PATH)/$(1).app/$(SIMULATOR_APP_RESOURCE_PATH),$(2))
-simulator_app_plist = $(addprefix $(SIMULATOR_APP_PATH)/$(1).app/$(SIMULATOR_APP_PLIST_PATH),$(2))
-
-# Epsilon binary
-
-.PHONY: force_remake
-
-define rule_for_epsilon
-$$(BUILD_DIR)/%/$(1): force_remake
-	$(Q) echo "MAKE    ARCH=$$*"
-	$(Q) $$(MAKE) ARCH=$$* $(1)
-endef
-
-$(eval $(call rule_for_epsilon,epsilon.bin))
-$(eval $(call rule_for_epsilon,epsilon.official.bin))
-
-define rule_for_lipo
-$$(call simulator_app_binary,$1,Epsilon): $$(patsubst %,$(BUILD_DIR)/%/$2.bin,$$(ARCHS)) | $$$$(@D)/.
-	$$(call rule_label,LIPO)
-	$(Q) $$(LIPO) -create $$^ -output $$@
-endef
-
-$(eval $(call rule_for_lipo,Epsilon,epsilon))
-$(eval $(call rule_for_lipo,Epsilon.official,epsilon.official))
-
-# Background image
-
-$(call simulator_app_resource,%,background.jpg): ion/src/simulator/assets/background.jpg | $$(@D)/.
-	$(call rule_label,COPY)
-	$(Q) cp $^ $@
-
-# Process icons
-
-ifndef SIMULATOR_ICON_SIZES
-  $(error SIMULATOR_ICON_SIZES should be defined)
-endif
-
-ifndef SIMULATOR_ICONSET
-  $(error SIMULATOR_ICONSET should be defined)
-endif
-
-SIMULATOR_ICONS = $(addprefix $(SIMULATOR_ICONSET)/,$(addsuffix .png,$(addprefix icon_, $(SIMULATOR_ICON_SIZES))))
-
-$(addprefix $(SIMULATOR_ICONSET)/,icon_%.png): ion/src/simulator/assets/logo.svg | $$(@D)/.
-	$(call rule_label,CONVERT)
-	$(Q) convert -background "#FFB734" -resize $* $< $@
-
-# Export simulator app dependencies
-
-simulator_app_deps += $(call simulator_app_binary,$(1),Epsilon)
-simulator_app_deps += $(call simulator_app_plist,$(1),Info.plist)
-simulator_app_deps += $(call simulator_app_resource,$(1),background.jpg)
--- a/ion/src/simulator/shared/apple/helpers.mak
+++ b/ion/src/simulator/shared/apple/helpers.mak
@@ -0,0 +1,43 @@
+# This file contains all the recipies shared between iOS and macOS.
+# The only things that have to be customized per platform are the icons and the
+# Info.plist.
+
+SIMULATOR_APP_PATH = $(BUILD_DIR)
+
+simulator_app_binary = $(SIMULATOR_APP_PATH)/%.app/$(SIMULATOR_APP_BINARY_PATH)Epsilon
+simulator_app_resource = $(SIMULATOR_APP_PATH)/%.app/$(SIMULATOR_APP_RESOURCE_PATH)$(1)
+simulator_app_plist = $(SIMULATOR_APP_PATH)/%.app/$(SIMULATOR_APP_PLIST_PATH)$(1)
+
+# Epsilon binary
+
+$(simulator_app_binary): $(foreach arch,$(ARCHS),$(BUILD_DIR)/$(arch)/%.bin) | $$(@D)/.
+	$(call rule_label,LIPO)
+	$(Q) $(LIPO) -create $^ -output $@
+
+# Background image
+
+$(call simulator_app_resource,background.jpg): ion/src/simulator/assets/background.jpg | $$(@D)/.
+	$(call rule_label,COPY)
+	$(Q) cp $^ $@
+
+# Process icons
+
+ifndef SIMULATOR_ICON_SIZES
+  $(error SIMULATOR_ICON_SIZES should be defined)
+endif
+
+ifndef SIMULATOR_ICONSET
+  $(error SIMULATOR_ICONSET should be defined)
+endif
+
+SIMULATOR_ICONS = $(addprefix $(SIMULATOR_ICONSET)/,$(addsuffix .png,$(addprefix icon_, $(SIMULATOR_ICON_SIZES))))
+
+$(addprefix $(SIMULATOR_ICONSET)/,icon_%.png): ion/src/simulator/assets/logo.svg | $$(@D)/.
+	$(call rule_label,CONVERT)
+	$(Q) convert -background "#FFB734" -resize $* $< $@
+
+# Export simulator app dependencies
+
+simulator_app_deps += $(simulator_app_binary)
+simulator_app_deps += $(call simulator_app_plist,Info.plist)
+simulator_app_deps += $(call simulator_app_resource,background.jpg)
--- a/ion/src/simulator/shared/apple/targets.mak
+++ b/ion/src/simulator/shared/apple/targets.mak
@@ -0,0 +1,16 @@
+.PRECIOUS: $(simulator_app_deps)
+
+# CAUTION: The empty line in this rule is important!
+# Indeed, rule without receipe serve a special purpose
+# https://www.gnu.org/software/make/manual/html_node/Canceling-Rules.html
+.PRECIOUS: $(BUILD_DIR)/%.app
+$(BUILD_DIR)/%.app: $(simulator_app_deps)
+	
+
+$(BUILD_DIR)/%.ipa: $(BUILD_DIR)/%.app
+ifdef IOS_PROVISIONNING_PROFILE
+	$(call rule_label,SIGN)
+	$(Q) codesign --force --entitlements $(BUILD_DIR)/app/entitlements.plist --sign "Apple Distribution: NumWorks" $(BUILD_DIR)/$*.app
+endif
+	$(call rule_label,ZIP)
+	$(Q) cd $(dir $@) ; zip -qr9 $(notdir $@) $*.app
--- a/kandinsky/Makefile
+++ b/kandinsky/Makefile
@@ -30,6 +30,8 @@ tests_src += $(addprefix kandinsky/test/,\
  rect.cpp\
 )

+code_points = kandinsky/fonts/code_points.h
+
 RASTERIZER_CFLAGS := -std=c99 $(shell pkg-config freetype2 --cflags)
 RASTERIZER_LDFLAGS := $(shell pkg-config freetype2 --libs)

@@ -43,7 +45,8 @@ $(eval $(call rule_for, \
  HOSTCC, \
  kandinsky/fonts/rasterizer, \
  kandinsky/fonts/rasterizer.c $(addprefix ion/src/external/lz4/, lz4.c lz4hc.c), \
-  $$(HOSTCC) $$(RASTERIZER_CFLAGS) $$^ $$(RASTERIZER_LDFLAGS) -o $$@ \
+  $$(HOSTCC) $$(RASTERIZER_CFLAGS) $$^ $$(RASTERIZER_LDFLAGS) -o $$@, \
+  global \
 ))

 RASTERIZER := $(BUILD_DIR)/kandinsky/fonts/rasterizer
@@ -54,7 +57,8 @@ $(call rule_for, \
  RASTER, \
  kandinsky/fonts/$(1).cpp, \
  kandinsky/fonts/$(1).ttf $$(RASTERIZER), \
-  $$(RASTERIZER) $$< $(2) $(2) $(3) $(4) $(1) $$@ $(if $(HAS_LIBPNG),$$(basename $$@).png) \
+  $$(RASTERIZER) $$< $(2) $(2) $(3) $(4) $(1) $$@ $(if $(HAS_LIBPNG),$$(basename $$@).png), \
+  global \
 )
 endef

--- a/liba/include/unistd.h
+++ b/liba/include/unistd.h
@@ -2,5 +2,6 @@
 #define LIBA_UNISTD_H

 #define SEEK_SET 0
+#define SEEK_CUR 1

 #endif
--- a/poincare/src/nth_root.cpp
+++ b/poincare/src/nth_root.cpp
@@ -50,7 +50,7 @@ Evaluation<T> NthRootNode::templatedApproximate(Context * context, Preferences::
      // root(x, q) with q integer and x real
      Complex<T> result = PowerNode::computeNotPrincipalRealRootOfRationalPow(basec, (T)1.0, indexc.real());
       if (!result.isUndefined()) {
-         return result;
+         return std::move(result);
       }
    }
    result = PowerNode::compute(basec, std::complex<T>(1.0)/(indexc), complexFormat);
--- a/poincare/src/power.cpp
+++ b/poincare/src/power.cpp
@@ -325,7 +325,7 @@ template<typename T> Evaluation<T> PowerNode::templatedApproximate(Context * con
    }
    Complex<T> result = computeNotPrincipalRealRootOfRationalPow(c, p, q);
    if (!result.isUndefined()) {
-      return result;
+      return std::move(result);
    }
  }
 defaultApproximation:
--- a/python/Makefile
+++ b/python/Makefile
@@ -13,6 +13,7 @@ py_src = $(addprefix python/src/py/,\
  nlrx86.c \
  nlrx64.c \
  nlrthumb.c \
+  nlrpowerpc.c \
  nlrxtensa.c \
  nlrsetjmp.c \
  malloc.c \
@@ -43,6 +44,7 @@ py_src = $(addprefix python/src/py/,\
  asmxtensa.c \
  emitnxtensa.c \
  emitinlinextensa.c \
+  emitnxtensawin.c \
  formatfloat.c \
  parsenumbase.c \
  parsenum.c \
@@ -52,9 +54,11 @@ py_src = $(addprefix python/src/py/,\
  runtime_utils.c \
  scheduler.c \
  nativeglue.c \
+  ringbuf.c \
  stackctrl.c \
  argcheck.c \
  warning.c \
+  profile.c \
  map.c \
  obj.c \
  objarray.c \
@@ -183,11 +187,20 @@ $(eval $(call rule_for, \
  QSTRDAT, \
  python/port/genhdr/qstrdefs.generated.h, \
  python/port/genhdr/qstrdefs.in.h, \
-  $$(PYTHON) python/src/py/makeqstrdata.py $$< > $$@ \
+  $$(PYTHON) python/src/py/makeqstrdata.py $$< > $$@, \
+  global \
 ))

 $(call object_for,$(python_src)): $(BUILD_DIR)/python/port/genhdr/qstrdefs.generated.h

 tests_src += $(addprefix python/test/,\
-  mandelbrot.cpp \
+  basics.cpp \
+  execution_environment.cpp \
+  ion.cpp \
+  kandinsky.cpp \
+  math.cpp \
+  random.cpp \
+  time.cpp \
+  turtle.cpp \
+  matplotlib.cpp \
 )
--- a/python/port/genhdr/moduledefs.h
+++ b/python/port/genhdr/moduledefs.h
@@ -1,13 +1,13 @@
 // Automatically generated by makemoduledefs.py.

 #if (MICROPY_PY_ARRAY)
-    extern const struct _mp_obj_module_t mp_module_array;
-    #define MODULE_DEF_MP_QSTR_ARRAY { MP_ROM_QSTR(MP_QSTR_array), MP_ROM_PTR(&mp_module_array) },
+    extern const struct _mp_obj_module_t mp_module_uarray;
+    #define MODULE_DEF_MP_QSTR_UARRAY { MP_ROM_QSTR(MP_QSTR_uarray), MP_ROM_PTR(&mp_module_uarray) },
 #else
-    #define MODULE_DEF_MP_QSTR_ARRAY
+    #define MODULE_DEF_MP_QSTR_UARRAY
 #endif


 #define MICROPY_REGISTERED_MODULES \
-    MODULE_DEF_MP_QSTR_ARRAY \
+    MODULE_DEF_MP_QSTR_UARRAY \
 // MICROPY_REGISTERED_MODULES
--- a/python/port/genhdr/mpversion.h
+++ b/python/port/genhdr/mpversion.h
@@ -1,4 +0,0 @@
-// This file was generated by py/makeversionhdr.py
-#define MICROPY_GIT_TAG "v1.11-dirty"
-#define MICROPY_GIT_HASH "6f75c4f3c-dirty"
-#define MICROPY_BUILD_DATE "2019-08-21"
--- a/python/port/mod/matplotlib/modpyplot_table.c
+++ b/python/port/mod/matplotlib/modpyplot_table.c
@@ -1,33 +0,0 @@
-#include "modpyplot.h"
-
-STATIC MP_DEFINE_CONST_FUN_OBJ_0(modpyplot___init___obj, modpyplot___init__);
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(modpyplot_arrow_obj, 4, 4, modpyplot_arrow);
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(modpyplot_axis_obj, 0, 1, modpyplot_axis);
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(modpyplot_bar_obj, 2, 4, modpyplot_bar);
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(modpyplot_grid_obj, 0, 1, modpyplot_grid);
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(modpyplot_hist_obj, 1, 2, modpyplot_hist);
-STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(modpyplot_plot_obj, 1, 2, modpyplot_plot);
-STATIC MP_DEFINE_CONST_FUN_OBJ_2(modpyplot_scatter_obj, modpyplot_scatter);
-STATIC MP_DEFINE_CONST_FUN_OBJ_0(modpyplot_show_obj, modpyplot_show);
-STATIC MP_DEFINE_CONST_FUN_OBJ_3(modpyplot_text_obj, modpyplot_text);
-
-STATIC const mp_rom_map_elem_t modpyplot_module_globals_table[] = {
-  { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_matplotlib_dot_pyplot) },
-  { MP_ROM_QSTR(MP_QSTR___init__), MP_ROM_PTR(&modpyplot___init___obj) },
-  { MP_ROM_QSTR(MP_QSTR_arrow), MP_ROM_PTR(&modpyplot_arrow_obj) },
-  { MP_ROM_QSTR(MP_QSTR_axis), MP_ROM_PTR(&modpyplot_axis_obj) },
-  { MP_ROM_QSTR(MP_QSTR_bar), MP_ROM_PTR(&modpyplot_bar_obj) },
-  { MP_ROM_QSTR(MP_QSTR_grid), MP_ROM_PTR(&modpyplot_grid_obj) },
-  { MP_ROM_QSTR(MP_QSTR_hist), MP_ROM_PTR(&modpyplot_hist_obj) },
-  { MP_ROM_QSTR(MP_QSTR_plot), MP_ROM_PTR(&modpyplot_plot_obj) },
-  { MP_ROM_QSTR(MP_QSTR_scatter), MP_ROM_PTR(&modpyplot_scatter_obj) },
-  { MP_ROM_QSTR(MP_QSTR_show), MP_ROM_PTR(&modpyplot_show_obj) },
-  { MP_ROM_QSTR(MP_QSTR_text), MP_ROM_PTR(&modpyplot_text_obj) },
-};
-
-STATIC MP_DEFINE_CONST_DICT(modpyplot_module_globals, modpyplot_module_globals_table);
-
-const mp_obj_module_t modpyplot_module = {
-  .base = { &mp_type_module },
-  .globals = (mp_obj_dict_t*)&modpyplot_module_globals,
-};
--- a/python/port/mod/matplotlib/pyplot/modpyplot.cpp
+++ b/python/port/mod/matplotlib/pyplot/modpyplot.cpp
@@ -88,8 +88,7 @@ mp_obj_t modpyplot_arrow(size_t n_args, const mp_obj_t *args) {
  assert(sPlotStore != nullptr);

  KDColor color = Palette::nextDataColor(&paletteIndex);
-  sPlotStore->addSegment(args[0], args[1], mp_obj_new_float(mp_obj_get_float(args[0])+mp_obj_get_float(args[2])), mp_obj_new_float(mp_obj_get_float(args[1])+mp_obj_get_float(args[3])), color, true); // TODO: use float_binary_op
-
+  sPlotStore->addSegment(args[0], args[1], mp_obj_float_binary_op(MP_BINARY_OP_INPLACE_ADD, mp_obj_get_float(args[0]), args[2]),  mp_obj_float_binary_op(MP_BINARY_OP_INPLACE_ADD, mp_obj_get_float(args[1]), args[3]), color, true);
  return mp_const_none;
 }

@@ -183,13 +182,23 @@ mp_obj_t modpyplot_bar(size_t n_args, const mp_obj_t *args) {

  KDColor color = Palette::nextDataColor(&paletteIndex);
  for (size_t i=0; i<xLength; i++) {
-    mp_float_t iH = mp_obj_get_float(hItems[hLength > 1 ? i : 0]);
-    mp_float_t iW = mp_obj_get_float(wItems[wLength > 1 ? i : 0]);
-    mp_float_t iB = mp_obj_get_float(bItems[bLength > 1 ? i : 0]);
-    mp_float_t iX = mp_obj_get_float(xItems[i])-iW/2.0;
-    mp_float_t iYStart = iH < 0.0 ? iB : iB + iH;
-    mp_float_t iYEnd = iH < 0.0 ? iB + iH : iB;
-    sPlotStore->addRect(mp_obj_new_float(iX), mp_obj_new_float(iX+iW), mp_obj_new_float(iYStart), mp_obj_new_float(iYEnd), color); // TODO: use float_binary_op?
+    mp_obj_t iH = hItems[hLength > 1 ? i : 0];
+    mp_obj_t iW = wItems[wLength > 1 ? i : 0];
+    mp_obj_t iB = bItems[bLength > 1 ? i : 0];
+    mp_obj_t iX = xItems[i];
+
+    float iWf = mp_obj_get_float(iW);
+    float iXf = mp_obj_get_float(iX);
+    mp_obj_t rectLeft = mp_obj_new_float(iXf - iWf/2.0f);
+    mp_obj_t rectRight = mp_obj_new_float(iXf + iWf/2.0f);
+    mp_obj_t rectBottom = iB;
+    mp_obj_t rectTop = mp_obj_float_binary_op(MP_BINARY_OP_INPLACE_ADD, mp_obj_get_float(iH), iB);
+    if (mp_obj_get_float(iH) < 0.0) {
+      mp_obj_t temp = rectTop;
+      rectTop = rectBottom;
+      rectBottom = temp;
+    }
+    sPlotStore->addRect(rectLeft, rectRight, rectTop, rectBottom, color);
  }
  return mp_const_none;
 }
@@ -229,6 +238,8 @@ mp_obj_t modpyplot_hist(size_t n_args, const mp_obj_t *args) {
  mp_float_t min = mp_obj_get_float(xItems[0]);
  mp_float_t max = mp_obj_get_float(xItems[xLength - 1]);

+  // TODO: memory optimization
+  // Don't create a list of edges, compute the edge on the go if not present?
  mp_obj_t * edgeItems;
  size_t nBins;
  // bin arg
@@ -252,7 +263,7 @@ mp_obj_t modpyplot_hist(size_t n_args, const mp_obj_t *args) {
    }

    // Fill the bin edges list
-    for (int i = 0; i < nBins+1; i++) {
+    for (size_t i = 0; i < nBins+1; i++) {
      edgeItems[i] = mp_obj_new_float(min+i*binWidth);
    }
  }
@@ -323,7 +334,7 @@ mp_obj_t modpyplot_plot(size_t n_args, const mp_obj_t *args) {

    // Create the default xItems: [0, 1, 2,...]
    xItems = m_new(mp_obj_t, length);
-    for (int i = 0; i < length; i++) {
+    for (size_t i = 0; i < length; i++) {
      xItems[i] = mp_obj_new_float((float)i);
    }
  } else {
--- a/python/port/mod/matplotlib/pyplot/plot_store.cpp
+++ b/python/port/mod/matplotlib/pyplot/plot_store.cpp
@@ -62,7 +62,7 @@ T PlotStore::ListIterator<T>::operator*() {
 };

 void checkFloatType(mp_obj_t * elements, size_t nbOfElements) {
-  for (int i = 0; i < nbOfElements; i++) {
+  for (size_t i = 0; i < nbOfElements; i++) {
    // TODO: we don't take advantage of the fact that we extracted the value at the sametime... Maybe change the way things are done, build the c objects in addItem instead of allocating them on the python heap? Or use float array in python?
    mp_float_t value;
    if (!mp_obj_get_float_maybe(elements[i], &value)) {
--- a/python/port/mpconfigport.h
+++ b/python/port/mpconfigport.h
@@ -119,8 +119,6 @@ typedef uintptr_t mp_uint_t; // must be pointer size

 typedef long mp_off_t;

-#define SEEK_CUR 1
-
 // extra built in names to add to the global namespace
 #define MICROPY_PORT_BUILTINS \
    { MP_OBJ_NEW_QSTR(MP_QSTR_open), (mp_obj_t)&mp_builtin_open_obj }, \
--- a/Show More
+++ b/Show More