mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
9cd50a693a
This prevent evaluating `LINKFLAGS` when not needed and when building in docker so does not produce errors if `avr-ld` is not installed. ``` BUILD_IN_DOCKER=1 BOARD=arduino-mega2560 make --no-print-directory -C examples/hello-world/ clean /srv/ilab-builds/workspace/git/riot_master/makefiles/toolchain/gnu.inc.mk:18: objcopy not found. Hex file will not be created. /bin/sh: 1: avr-ld: not found ``` It removes the `/bin/sh: 1: avr-ld: not found`
45 lines
1.9 KiB
Makefile
45 lines
1.9 KiB
Makefile
# Target architecture for the build. Use avr if you are unsure.
|
|
export TARGET_ARCH ?= avr
|
|
|
|
export CFLAGS_CPU = -mmcu=$(CPU) $(CFLAGS_FPU)
|
|
export CFLAGS_LINK = -ffunction-sections -fdata-sections -fno-builtin -fshort-enums
|
|
export CFLAGS_DBG ?= -ggdb -g3
|
|
export CFLAGS_OPT ?= -Os
|
|
|
|
export CFLAGS += $(CFLAGS_CPU) $(CFLAGS_LINK) $(CFLAGS_DBG) $(CFLAGS_OPT)
|
|
export ASFLAGS += $(CFLAGS_CPU) $(CFLAGS_DBG)
|
|
LINKFLAGS += $(CFLAGS_CPU) $(CFLAGS_DBG) $(CFLAGS_OPT) -static -lgcc -e reset_handler -Wl,--gc-sections
|
|
|
|
# export the peripheral drivers to be linked into the final binary
|
|
export USEMODULE += atmega_common_periph
|
|
export USEMODULE += periph_common
|
|
|
|
# the atmel port uses stdio_uart
|
|
export USEMODULE += stdio_uart
|
|
|
|
# include module specific includes
|
|
export INCLUDES += -I$(RIOTCPU)/atmega_common/include \
|
|
-isystem$(RIOTCPU)/atmega_common/avr_libc_extra/include \
|
|
-isystem$(RIOTCPU)/atmega_common/avr_libc_extra/include/vendor
|
|
|
|
ifeq ($(LTO),1)
|
|
# avr-gcc <4.8.3 has a bug when using LTO which causes a warning to be printed always:
|
|
# '_vector_25' appears to be a misspelled signal handler [enabled by default]
|
|
# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59396
|
|
LINKFLAGS += -Wno-error
|
|
endif
|
|
|
|
# Use ROM_LEN and RAM_LEN during link
|
|
$(if $(ROM_LEN),,$(error ROM_LEN is not defined))
|
|
$(if $(RAM_LEN),,$(error RAM_LEN is not defined))
|
|
LINKFLAGS += $(LINKFLAGPREFIX)--defsym=__TEXT_REGION_LENGTH__=$(ROM_LEN)$(if $(ROM_RESERVED),-$(ROM_RESERVED))
|
|
LINKFLAGS += $(LINKFLAGPREFIX)--defsym=__DATA_REGION_LENGTH__=$(RAM_LEN)
|
|
|
|
# Use newer linker script to have ROM/RAM configuration symbols in binutils<2.26
|
|
LDSCRIPT_COMPAT = $(if $(shell $(TARGET_ARCH)-ld --verbose | grep __TEXT_REGION_LENGTH__),,\
|
|
-T$(RIOTCPU)/$(CPU)/ldscripts_compat/avr_2.26.ld)
|
|
LINKFLAGS += $(LDSCRIPT_COMPAT)
|
|
|
|
# avr libc needs some RIOT-specific support code
|
|
USEMODULE += avr_libc_extra
|