RIOT/cpu/arm7_common/Makefile.include

# Target architecture for the build. Use arm-none-eabi if you are unsure.
TARGET_ARCH_ARM7 ?= arm-none-eabi
TARGET_ARCH ?= $(TARGET_ARCH_ARM7)

INCLUDES += -I$(RIOTBASE)/cpu/arm7_common/include/

# currently only arm7tdmi-s is supported by RIOT, but allow overriding MCPU
# if someone wants to add support for other ARM7 CPUs
MCPU ?= arm7tdmi-s

CFLAGS_CPU  = -mcpu=$(MCPU)
CFLAGS_LINK = -ffunction-sections -fdata-sections -fshort-enums
CFLAGS_DBG  ?= -ggdb -g3
CFLAGS_OPT  ?= -Os

CFLAGS      += $(CFLAGS_CPU) $(CFLAGS_LINK) $(CFLAGS_DBG) $(CFLAGS_OPT)
ASFLAGS     += $(CFLAGS_CPU)
LINKFLAGS   += -T$(RIOTCPU)/$(CPU)/ldscripts/$(CPU).ld
LINKFLAGS   += $(CFLAGS_CPU) $(CFLAGS_DBG) $(CFLAGS_OPT) -static -lgcc -nostartfiles
LINKFLAGS   += -Wl,--gc-sections
arm7: Use TARGET_ARCH instead of custom toolchain specification 2016-03-21 09:27:23 +01:00			`# Target architecture for the build. Use arm-none-eabi if you are unsure.`
build system: Overwrite TARGET_ARCH per arch Add `TARGET_ARCH_<ARCH>` for each architecture (e.g. `TARGET_ARCH_CORTEX` for Cortex M) to allow users to overwrite the target triple for a specific arch from ~/.profile or ~/.bashrc (or the like) without overwriting it for all others as well. 2020-09-08 22:28:41 +02:00			`TARGET_ARCH_ARM7 ?= arm-none-eabi`
			`TARGET_ARCH ?= $(TARGET_ARCH_ARM7)`
arm7: Use TARGET_ARCH instead of custom toolchain specification 2016-03-21 09:27:23 +01:00
cpu/arm7_common: Moved compiler flags here - Moved compiler & linker flags from boards/common/msba2 to cpu/arm7_common - Moved dependency to newlib nano to cpu/arm7_common - Moved config to link in cpu/startup.o to cpu/arm7_common 2019-07-23 06:48:12 +02:00			`INCLUDES += -I$(RIOTBASE)/cpu/arm7_common/include/`

			`# currently only arm7tdmi-s is supported by RIOT, but allow overriding MCPU`
			`# if someone wants to add support for other ARM7 CPUs`
			`MCPU ?= arm7tdmi-s`

			`CFLAGS_CPU = -mcpu=$(MCPU)`
cpu/arm7, arch/cortexm: Remove -fno-builtin flag This flag disables all builtin functions provided by the compiler as well as disabling all optimizations and error checking related to standard C library functions. If you're using a C library which conforms to the ANSI C standard, you want to leave these compiler features enabled. Signed-off-by: Keith Packard <keithp@keithp.com> 2022-04-03 01:54:31 +02:00			`CFLAGS_LINK = -ffunction-sections -fdata-sections -fshort-enums`
cpu/arm7_common: Moved compiler flags here - Moved compiler & linker flags from boards/common/msba2 to cpu/arm7_common - Moved dependency to newlib nano to cpu/arm7_common - Moved config to link in cpu/startup.o to cpu/arm7_common 2019-07-23 06:48:12 +02:00			`CFLAGS_DBG ?= -ggdb -g3`
			`CFLAGS_OPT ?= -Os`

			`CFLAGS += $(CFLAGS_CPU) $(CFLAGS_LINK) $(CFLAGS_DBG) $(CFLAGS_OPT)`
cpu/arm7_common: fix compilation with 12.2.0 This fixes: Assembler messages: Fatal error: unknown option `-ggdb' 2022-09-23 18:39:28 +02:00			`ASFLAGS += $(CFLAGS_CPU)`
cpu/armv7: remove use of export for LINKFLAGS 2020-01-02 09:48:02 +01:00			`LINKFLAGS += -T$(RIOTCPU)/$(CPU)/ldscripts/$(CPU).ld`
			`LINKFLAGS += $(CFLAGS_CPU) $(CFLAGS_DBG) $(CFLAGS_OPT) -static -lgcc -nostartfiles`
			`LINKFLAGS += -Wl,--gc-sections`