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arm: makefile improvements

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This commit is contained in:
Paul Mathieu 2022-05-16 20:28:24 -07:00
parent d7a8f5b26d
commit 0226d314ec
2 changed files with 11 additions and 9 deletions
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2
arm/bootloader.ld
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@ -7,7 +7,7 @@ SECTIONS
{ {
.text : .text :
{ {
KEEP(vector_table.o(.vector_table)) KEEP(*(.vector_table))
*(.text*) *(.text*)
*(.rodata*) *(.rodata*)

18
arm/makefile
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@ -7,12 +7,13 @@ linker_script = bootloader.ld
includes = includes =
sources = sources =
CFLAGS = -march=armv6-m -g -ffunction-sections -fdata-sections -O2 -Werror -Wall CFLAGS = -march=armv6-m -g -ffunction-sections -fdata-sections -Os -Werror -Wall -flto
CXXFLAGS = $(CFLAGS) -std=c++20 -fno-exceptions CXXFLAGS = $(CFLAGS) -std=c++20 -fno-exceptions -fcoroutines
CPPFLAGS = -MD -MP
LDFLAGS = -march=armv6-m \ LDFLAGS = -march=armv6-m \
-g --specs=nano.specs --specs=nosys.specs \ -g --specs=nano.specs --specs=nosys.specs \
-Wl,--gc-sections -O2 \ -Wl,--gc-sections -Os \
-Wl,--print-memory-usage -Wl,--print-memory-usage -flto
sources += hal/lib/common/xil_assert.c sources += hal/lib/common/xil_assert.c
includes += -Ihal/lib/common includes += -Ihal/lib/common
@ -23,17 +24,18 @@ includes += -Ihal/uart
bootloader_objects = uart.o bootloader.o vector_table.o $(sources:.c=.o) bootloader_objects = uart.o bootloader.o vector_table.o $(sources:.c=.o)
app_objects = app_init.o main.o app_objects = app_init.o main.o
CFLAGS += $(includes) CPPFLAGS += $(includes)
all: bootloader.elf app.bin all: bootloader.elf app.bin
%.bin: %.elf %.bin: %.elf
$(OBJCOPY) -O binary $< $@ $(OBJCOPY) -O binary $< $@
bootloader.elf: $(bootloader_objects) bootloader.elf: $(bootloader_objects) bootloader.ld
$(LD) -Wl,-Tbootloader.ld $(LDFLAGS) -o $@ $^ $(LD) -Wl,-Tbootloader.ld $(LDFLAGS) -o $@ $(bootloader_objects)
app.elf: $(app_objects) app.elf: $(app_objects) app.ld
$(LD) -Wl,-Tapp.ld $(LDFLAGS) -o $@ $(app_objects)
%.elf: %.elf:
$(LD) -Wl,-Tapp.ld $(LDFLAGS) -o $@ $^ $(LD) -Wl,-Tapp.ld $(LDFLAGS) -o $@ $^