From 584052c28cdfe5c383f13471deb891ba9438843a Mon Sep 17 00:00:00 2001 From: Daniel Serpell Date: Wed, 22 Aug 2012 00:05:09 -0400 Subject: [PATCH] Compile stm32-f4 library with floating point support. This enables hard-float in the compilation of library and examples for the stm32f40* chips. --- examples/stm32/f4/Makefile.include | 5 +++-- lib/stm32/f4/Makefile | 3 ++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/examples/stm32/f4/Makefile.include b/examples/stm32/f4/Makefile.include index b735aa6e..9dfe9d0e 100644 --- a/examples/stm32/f4/Makefile.include +++ b/examples/stm32/f4/Makefile.include @@ -36,12 +36,13 @@ endif TOOLCHAIN_DIR := ../../../../.. endif CFLAGS += -Os -g -Wall -Wextra -I$(TOOLCHAIN_DIR)/include \ - -fno-common -mcpu=cortex-m4 -mthumb -msoft-float -MD -DSTM32F4 + -fno-common -mcpu=cortex-m4 -mthumb \ + -mfloat-abi=hard -mfpu=fpv4-sp-d16 -MD -DSTM32F4 LDSCRIPT ?= $(BINARY).ld LDFLAGS += -lc -lnosys -L$(TOOLCHAIN_DIR)/lib \ -L$(TOOLCHAIN_DIR)/lib/stm32/f4 \ -T$(LDSCRIPT) -nostartfiles -Wl,--gc-sections \ - -mthumb -mcpu=cortex-m4 -march=armv7 -mfix-cortex-m3-ldrd -msoft-float + -mthumb -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 OBJS += $(BINARY).o OOCD ?= openocd diff --git a/lib/stm32/f4/Makefile b/lib/stm32/f4/Makefile index 5760d29b..881ef5de 100644 --- a/lib/stm32/f4/Makefile +++ b/lib/stm32/f4/Makefile @@ -24,7 +24,8 @@ PREFIX ?= arm-none-eabi CC = $(PREFIX)-gcc AR = $(PREFIX)-ar CFLAGS = -Os -g -Wall -Wextra -I../../../include -fno-common \ - -mcpu=cortex-m3 -mthumb -Wstrict-prototypes \ + -mcpu=cortex-m4 -mthumb -mfloat-abi=hard -mfpu=fpv4-sp-d16 \ + -Wstrict-prototypes \ -ffunction-sections -fdata-sections -MD -DSTM32F4 # ARFLAGS = rcsv ARFLAGS = rcs