diff options
| -rw-r--r-- | ports/stm32/Makefile | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/ports/stm32/Makefile b/ports/stm32/Makefile index 5cde84e67..53d1bb4ac 100644 --- a/ports/stm32/Makefile +++ b/ports/stm32/Makefile @@ -96,13 +96,22 @@ CFLAGS += -fsingle-precision-constant endif endif -LDFLAGS = -nostdlib -L $(LD_DIR) $(addprefix -T,$(LD_FILES)) -Map=$(@:.elf=.map) --cref -LDFLAGS += --defsym=_estack_reserve=8 +LDFLAGS = -nostdlib -L $(LD_DIR) $(addprefix -T,$(LD_FILES)) -Wl,-Map=$(@:.elf=.map) -Wl,--cref +LDFLAGS += -Wl,--defsym=_estack_reserve=8 LIBS += "$(shell $(CC) $(CFLAGS) -print-libgcc-file-name)" # Remove uncalled code from the final image. CFLAGS += -fdata-sections -ffunction-sections -LDFLAGS += --gc-sections +LDFLAGS += -Wl,--gc-sections + +ifeq ($(LTO),1) +CFLAGS += -flto=auto +# LTO requires passing compiler flags to the linker as it will run the assembler. +# To avoid risk of missing something relevant, pass all flags except for preprocessor args +LDFLAGS += $(filter-out -I%,$(filter-out -D%,$(CFLAGS))) + +$(BUILD)/stm32_it.o $(BUILD)/pendsv.o: CFLAGS += -fno-lto +endif # Debugging/Optimization ifeq ($(DEBUG), 1) @@ -592,7 +601,7 @@ endef define GENERATE_ELF $(ECHO) "LINK $(1)" - $(Q)$(LD) $(LDFLAGS) -o $(1) $(2) $(LDFLAGS_MOD) $(LIBS) + $(Q)$(CC) $(LDFLAGS) -o $(1) $(2) $(LDFLAGS_MOD) $(LIBS) $(Q)$(SIZE) $(1) $(if $(filter-out $(TEXT0_ADDR),0x08000000), \ $(ECHO) "INFO: this build requires mboot to be installed first") |