Executables are not always .elf files

Change-Id: I1abebbe9d3e7a4a208ba912f1f29ceddf23617ca

Makefile

@@ -5,6 +5,9 @@ include Makefile.$(PLATFORM)
 ifndef USE_LIBA
   $(error Makefile.PLATFORM should define USE_LIBA)
 endif
+ifndef EXE
+  $(error Makefile.PLATFORM should define EXE, the extension for executables)
+endif
 
 HOSTCC = gcc
 HOSTCXX = g++
@@ -30,12 +33,12 @@ endif
 CFLAGS = -std=c99
 CXXFLAGS = -std=c++11 -fno-exceptions -fno-rtti -fno-threadsafe-statics
 
-products := boot.elf boot.hex boot.bin test.elf test.hex test.bin
+products := boot.$(EXE) boot.$(EXE) boot.bin test.$(EXE) test.hex test.bin
 
 ifeq ($(VERBOSE),1)
 default: info clean app_size app_memory_map
 else
-default: app.elf
+default: app.$(EXE)
 endif
 run: app_run
 
@@ -71,26 +74,26 @@ dependencies = $(objs:.o=.d)
 
 -include $(dependencies)
 
-%.elf: $(objs)
+%.$(EXE): $(objs)
 	@echo "LD      $@"
 	@$(LD) $^ $(LDFLAGS) -o $@
 
 .PHONY: %_size
-%_size: %.elf
+%_size: %.$(EXE)
 	@echo "========= BUILD OUTPUT ========"
 	@echo "File:  $<"
 	@$(SIZE) $< | tail -n 1 | awk '{print "Code:  " $$1 " bytes";print "Data:  " $$2 " bytes"; print "Total: " int(($$1+$$2)/1024) " kB (" $$1 + $$2 " bytes)";}'
 	@echo "==============================="
 
 .PHONY: %_run
-%_run: %.elf
+%_run: %.$(EXE)
 	$(GDB) -x gdb_script.gdb $<
 
-%.hex: %.elf
+%.hex: %.$(EXE)
 	@echo "OBJCOPY $@"
 	@$(OBJCOPY) -O ihex $< $@
 
-%.bin: %.elf
+%.bin: %.$(EXE)
 	@echo "OBJCOPY $@"
 	@$(OBJCOPY) -O binary $< $@
 

Makefile.device

@@ -25,3 +25,4 @@ SFLAGS += -mcpu=cortex-m4 -mfpu=fpv4-sp-d16
 
 # Platform configuration
 USE_LIBA=1
+EXE=elf

Makefile.simulator

@@ -4,3 +4,4 @@ LD=clang++
 SIZE=size
 
 USE_LIBA=0
+EXE=elf

apps/Makefile

@@ -15,4 +15,4 @@ $(app_objs): $(inline_images:.png=.o)
 
 products += $(app_objs) app.elf app.hex app.bin
 
-app.elf: $(app_objs)
+app.$(EXE): $(app_objs)

quiz/Makefile

@@ -9,6 +9,6 @@ $(symbols_file): $(tests)
 
 runner_objs += $(addprefix quiz/src/, runner.o symbols.o)
 test_objs = $(subst .c,.o, $(subst .cpp,.o,$(tests)))
-products += test.elf test.hex test.bin $(runner_objs) $(test_objs)
+products += test.$(EXE) test.hex test.bin $(runner_objs) $(test_objs)
 
-test.elf: $(objs) $(runner_objs) $(test_objs)
+test.$(EXE): $(objs) $(runner_objs) $(test_objs)