[GCC_ARM][DISCO_F407VG]: Enabled "-mfloat-abi=hard" option

Author: dinau

workspace_tools/export/gcc_arm_disco_f407vg.tmpl

@@ -19,15 +19,21 @@ OBJCOPY = $(GCC_BIN)arm-none-eabi-objcopy
 OBJDUMP = $(GCC_BIN)arm-none-eabi-objdump
 SIZE 	= $(GCC_BIN)arm-none-eabi-size
 
-CPU = -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=softfp
+CPU = -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=$(FLOAT_ABI)
 CC_FLAGS = $(CPU) -c -g -fno-common -fmessage-length=0 -Wall -fno-exceptions -ffunction-sections -fdata-sections
 CC_FLAGS += -MMD -MP
 CC_SYMBOLS = {% for s in symbols %}-D{{s}} {% endfor %}
 
-LD_FLAGS = -mcpu=cortex-m4 -mthumb -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
+LD_FLAGS = $(CPU) -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float
 LD_FLAGS += -Wl,-Map=$(PROJECT).map,--cref
 LD_SYS_LIBS = -lstdc++ -lsupc++ -lm -lc -lgcc -lnosys
 
+ifeq ($(SOFTFP),1)
+	FLOAT_ABI = softfp
+else
+	FLOAT_ABI = hard
+endif
+
 ifeq ($(DEBUG), 1)
   CC_FLAGS += -DDEBUG -O0
 else