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stmhal/Makefile: Drop use of -mabi=aapcs-linux; link libgcc by default.

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The aapcs-linux ABI is not required, instead the default aapcs ABI is
enough.  And using the default ABI means that the provided libgcc will now
link with the firmware without warnings about variable vs fixed enums.

Although the binary size increases by about 1k, RAM usage is slightly
decreased.  And libgcc may prove useful in the future for things like
long-long division.
This commit is contained in:
Damien George 2017-02-08 11:50:22 +11:00
parent aa34c553ec
commit 7ae9bee790
1 changed files with 2 additions and 5 deletions
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7
stmhal/Makefile
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@ -51,7 +51,7 @@ INC += -I../lib/mp-readline
INC += -I../lib/netutils
INC += -I../lib/timeutils
CFLAGS_CORTEX_M = -mthumb -mabi=aapcs-linux -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion
CFLAGS_CORTEX_M = -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -fsingle-precision-constant -Wdouble-promotion
CFLAGS_MCU_f4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -DMCU_SERIES_F4
CFLAGS_MCU_f7 = $(CFLAGS_CORTEX_M) -mtune=cortex-m7 -mcpu=cortex-m7 -DMCU_SERIES_F7
CFLAGS_MCU_l4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -DMCU_SERIES_L4
@ -64,7 +64,7 @@ CFLAGS += -Iboards/$(BOARD)
CFLAGS += -DSTM32_HAL_H='<stm32$(MCU_SERIES)xx_hal.h>'
LDFLAGS = -nostdlib -L $(LD_DIR) -T $(LD_FILE) -Map=$(@:.elf=.map) --cref
LIBS =
LIBS = $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
# Remove uncalled code from the final image.
CFLAGS += -fdata-sections -ffunction-sections
@ -78,9 +78,6 @@ else
COPT += -Os -DNDEBUG
endif
# uncomment this if you want libgcc
#LIBS += $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
SRC_LIB = $(addprefix lib/,\
libc/string0.c \
libm/math.c \