Enable production version

Makefile

@@ -4,11 +4,15 @@ GDB=arm-none-eabi-gdb
 OBJCOPY=arm-none-eabi-objcopy
 CFLAGS = -Iarch/stm32f429 -Iexternal/freertos/include -Iexternal -Iexternal/freertos/portable/GCC/ARM_CM4F -Iexternal/newlib/libc/include
 #-I/Users/romain/local/arm-none-eabi/include
-CFLAGS += -std=c99 -g -Wall # -Os
+CFLAGS += -std=c99 -g -Wall
 #CFLAGS += -march=armv7e-m -mcpu=cortex-m4 -mthumb  -mfpu=fpv4-sp-d16
 CC=clang
 CFLAGS += -target thumbv7em-unknown-eabi -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -ffreestanding
 
+# Production
+CFLAGS += -Os -fdata-sections -ffunction-sections
+LDFLAGS += --gc-sections
+
 objs := boot/crt0.o arch/stm32f429/isr.o arch/stm32f429/registers/rcc.o arch/stm32f429/registers/gpio.o external/freertos/tasks.o external/freertos/list.o external/freertos/queue.o external/freertos/portable/GCC/ARM_CM4F/port.o external/freertos/portable/MemMang/heap_1.o external/newlib/libc/string/memset.o external/newlib/libc/string/memcpy.o
 
 default: clean boot.elf
@@ -21,7 +25,7 @@ test: test.elf
 	$(GDB) -x test/gdb_script.gdb test.elf
 
 test.elf: $(objs) test/runner.o
-	@$(LD) -T boot/stm32f429.ld $(objs) test/runner.o -o $@
+	@$(LD) $(LDFLAGS) $(objs) test/runner.o -o $@
 
 boot.hex: boot.elf
 	@echo "OBJCOPY $@"

boot/stm32f429.ld

@@ -90,11 +90,13 @@ SECTIONS {
     PROVIDE(_HardFaultServiceRoutine = _halt);
 
     *(.text)
+    *(.text.*)
   } >FLASH
 
   .rodata : {
     . = ALIGN(4);
     *(.rodata)
+    *(.rodata.*)
   } >FLASH
 
   .data : {
@@ -114,6 +116,7 @@ SECTIONS {
     _data_section_start_flash = LOADADDR(.data);
     _data_section_start_ram = .;
     *(.data)
+    *(.data.*)
     _data_section_end_ram = .;
   } >RAM AT> FLASH
 
@@ -127,6 +130,7 @@ SECTIONS {
     . = ALIGN(4);
     _bss_section_start_ram = .;
     *(.bss)
+    *(.bss.*)
     _bss_section_end_ram = .;
   } >RAM
 

gdb_script.gdb

@@ -9,4 +9,4 @@ monitor reset halt
 
 break main
 
-#continue
+continue