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Global: Allow overriding float-abi flags

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We currently default to "-mfloat-abi=hard -mfpu=fpv4-sp-d16" for M4F cores, and
and variations of "-mfloat-abi=soft" for the others. Keep the M4F default, and
move others to no FP flags for consistency, but allow overriding these flags
via the FP_FLAGS environment variable.

Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Alexandru Gagniuc
2013-06-10 11:42:21 -05:00
committed by Piotr Esden-Tempski
parent 63d150008a
commit 52d34c814b
17 changed files with 55 additions and 33 deletions
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4
lib/stm32/f1/Makefile
View File

@@ -20,7 +20,7 @@
LIBNAME = libopencm3_stm32f1
PREFIX ?= arm-none-eabi
#PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
AR = $(PREFIX)-ar
CFLAGS = -Os -g \
@@ -28,7 +28,7 @@ CFLAGS = -Os -g \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I../../../include -fno-common \
-mcpu=cortex-m3 -msoft-float -mthumb -Wstrict-prototypes \
-mcpu=cortex-m3 $(FP_FLAGS) -mthumb -Wstrict-prototypes \
-ffunction-sections -fdata-sections -MD -DSTM32F1
# ARFLAGS = rcsv
ARFLAGS = rcs

6
lib/stm32/f2/Makefile
View File

@@ -19,8 +19,8 @@
LIBNAME = libopencm3_stm32f2
PREFIX ?= arm-none-eabi
# PREFIX ?= arm-elf
PREFIX ?= arm-none-eabi
CC = $(PREFIX)-gcc
AR = $(PREFIX)-ar
CFLAGS = -Os -g \
@@ -28,7 +28,7 @@ CFLAGS = -Os -g \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I../../../include -fno-common \
-mcpu=cortex-m3 -mthumb -Wstrict-prototypes \
-mcpu=cortex-m3 -mthumb $(FP_FLAGS) -Wstrict-prototypes \
-ffunction-sections -fdata-sections -MD -DSTM32F2
# ARFLAGS = rcsv
ARFLAGS = rcs

8
lib/stm32/f3/Makefile
View File

@@ -19,8 +19,9 @@
LIBNAME = libopencm3_stm32f3
FP_FLAGS ?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
PREFIX ?= arm-none-eabi
# PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
AR = $(PREFIX)-ar
CFLAGS = -Os -g \
@@ -28,10 +29,9 @@ CFLAGS = -Os -g \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I../../../include -fno-common \
-mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 \
-Wstrict-prototypes \
-mcpu=cortex-m4 -mthumb $(FP_FLAGS) -Wstrict-prototypes \
-ffunction-sections -fdata-sections -MD -DSTM32F3
# ARFLAGS = rcsv
ARFLAGS = rcs
OBJS = rcc.o gpio.o adc.o exti.o i2c.o spi.o usart.o

6
lib/stm32/f4/Makefile
View File

@@ -2,6 +2,7 @@
## This file is part of the libopencm3 project.
##
## Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
## Copyright (C) 2013 Alexandru Gagniuc <mr.nuke.me@gmail.com>
##
## This library is free software: you can redistribute it and/or modify
## it under the terms of the GNU Lesser General Public License as published by
@@ -19,8 +20,9 @@
LIBNAME = libopencm3_stm32f4
FP_FLAGS ?= -mfloat-abi=hard -mfpu=fpv4-sp-d16
PREFIX ?= arm-none-eabi
# PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
AR = $(PREFIX)-ar
CFLAGS = -Os -g \
@@ -28,7 +30,7 @@ CFLAGS = -Os -g \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I../../../include -fno-common \
-mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 \
-mcpu=cortex-m4 -mthumb $(FP_FLAGS) \
-Wstrict-prototypes \
-ffunction-sections -fdata-sections -MD -DSTM32F4
# ARFLAGS = rcsv

4
lib/stm32/l1/Makefile
View File

@@ -20,7 +20,7 @@
LIBNAME = libopencm3_stm32l1
PREFIX ?= arm-none-eabi
#PREFIX ?= arm-elf
CC = $(PREFIX)-gcc
AR = $(PREFIX)-ar
CFLAGS = -Os -g \
@@ -28,7 +28,7 @@ CFLAGS = -Os -g \
-Wredundant-decls -Wmissing-prototypes -Wstrict-prototypes \
-Wundef -Wshadow \
-I../../../include -fno-common \
-mcpu=cortex-m3 -mthumb -Wstrict-prototypes \
-mcpu=cortex-m3 $(FP_FLAGS) -mthumb -Wstrict-prototypes \
-ffunction-sections -fdata-sections -MD -DSTM32L1
# ARFLAGS = rcsv
ARFLAGS = rcs