关于“ -DSTM32F10X_MD -DUSE_STDPERIPH_DRIVER”作为arm-none-eabi-gcc的标志是什么意思？

Question

它们似乎像stm32的启动文件和标准文件，但在“ GCC官方PDF”中找不到它们。

为什么它们可以直接使用

这是makefile中arm-none-eabi-gcc的标志：

# specify compiler flags
CFLAGS  = -g -O2 -Wall
CFLAGS += -T$(STD_PERIPH_LIBS)/Project/STM32F10x_StdPeriph_Template/TrueSTUDIO/STM3210B-EVAL/stm32_flash.ld
CFLAGS += -mlittle-endian -mthumb -mcpu=cortex-m4 -mthumb-interwork
CFLAGS += -mfloat-abi=hard -mfpu=fpv4-sp-d16
CFLAGS += -DSTM32F10X_MD -DUSE_STDPERIPH_DRIVER
CFLAGS += -Wl,--gc-sections
CFLAGS += -I.
CFLAGS += -I$(STD_PERIPH_LIBS)/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/
CFLAGS += -I$(STD_PERIPH_LIBS)/Libraries/CMSIS/CM3/CoreSupport
CFLAGS += -I$(STD_PERIPH_LIBS)/Libraries/STM32F10x_StdPeriph_Driver/inc

Answer 1

不是GCC标志，它是特定于库的标志（在本例中为STM32F10x标准外围设备库）检查it's documentation