scons 给汇编定义宏不起作用

发布于 2022-03-02 20:19:31 浏览：746 订阅该版

[tocm]

## 测试代码

```c
rt-thread\bsp\stm32\stm32l475-atk-pandora
```

win10 + scons v3.0.5

## 定义自己的测试宏

![image.png](https://oss-club.rt-thread.org/uploads/20220302/bdc74d131e42e86be5beb93b4853cdd5.png)

定义测试宏
```c
CPPDEFINES = ['STM32L475xx', 'ASM_TEST_DEFINE',] 
group = DefineGroup('Drivers', src, depend = [''], CPPPATH = path, CPPDEFINES = CPPDEFINES)
```

## 输出编译过程

scons --verbose 输出编译过程

startup_stm32l475xx.s 编译过程

```c
arm-none-eabi-gcc -c -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections -x assembler-with-cpp -Wa,-mimplicit-it=thumb -gdwarf-2 -o F:\git-project\rt-thread\bsp\stm32\libraries\STM32L4xx_HAL\CMSIS\Device\ST\STM32L4xx\Source\Templates\gcc\startup_stm32l475xx.o F:\git-project\rt-thread\bsp\stm32\libraries\STM32L4xx_HAL\CMSIS\Device\ST\STM32L4xx\Source\Templates\gcc\startup_stm32l475xx.s
```

汇编文件没有 `ASM_TEST_DEFINE`

同一分组下 stm32l4xx_hal_dma.c 编译过程
```c
arm-none-eabi-gcc -o F:\git-project\rt-thread\bsp\stm32\libraries\STM32L4xx_HAL\STM32L4xx_HAL_Driver\Src\stm32l4xx_hal_dma.o -c -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections -Dgcc -fstack-usage -fdump-rtl-dfinish -O0 -gdwarf-2 -g -DHAVE_CCONFIG_H -DSTM32L475xx -DASM_TEST_DEFINE -D__RTTHREAD__ -DRT_USING_NEWLIB -D_POSIX_C_SOURCE=1 -DUSE_HAL_DRIVER -I. -Iapplications -Iboard -Iboard\CubeMX_Config\Inc -IF:\git-project\rt-thread\include -IF:\git-project\rt-thread\libcpu\arm\common -IF:\git-project\rt-thread\libcpu\arm\cortex-m4 -IF:\git-project\rt-thread\components\libc\compilers\common -IF:\git-project\rt-thread\components\libc\compilers\newlib -IF:\git-project\rt-thread\components\libc\posix\io\poll -IF:\git-project\rt-thread\components\libc\posix\io\stdio -IF:\git-project\rt-thread\components\libc\posix\ipc -IF:\git-project\rt-thread\bsp\stm32\libraries\STM32L4xx_HAL\STM32L4xx_HAL_Driver\Inc -IF:\git-project\rt-thread\bsp\stm32\libraries\STM32L4xx_HAL\CMSIS\Device\ST\STM32L4xx\Include -IF:\git-project\rt-thread\bsp\stm32\libraries\STM32L4xx_HAL\CMSIS\Include -IF:\git-project\rt-thread\bsp\stm32\libraries\HAL_Drivers -IF:\git-project\rt-thread\bsp\stm32\libraries\HAL_Drivers\config F:\git-project\rt-thread\bsp\stm32\libraries\STM32L4xx_HAL\STM32L4xx_HAL_Driver\Src\stm32l4xx_hal_dma.c
```

C 文件有 `ASM_TEST_DEFINE`

同一分组下，C 文件有定义的测试宏，但是汇编中没有定义的测试宏？