Ubuntu下使用GCC编译STM32工程

最近在Ubuntu上使用GCC编译工具编译STM32的工程以下是一些遇到的问题以及解决的方法，该贴为常更新贴，后期遇到新的问题在添加进本帖。
GCC 编译器版本：gcc-arm-none-eabi-9-2019-q4
Ubuntu系统版本： Ubuntu 16.04 LTS
硬件平台：    STM32F303CCT6

ERROR Ⅰ: error: expected ‘(’ before ‘void’ __ASM void xxx
关于汇编的使用在使用GCC进行编译的时候会出现这种错误，但是在使用Keil5进行编译时却是正常的，就比如下面这段代码：

__ASM void MSR_MSP(u32 addr) { MSR MSP, r0
	BX r14 } 

修改方法如下，使用__ASM volatile()将汇编语句包裹起来：

void MSR_MSP(u32 addr) { __ASM volatile("MSR MSP, r0"); __ASM volatile("BX r14"); } 

ERROR Ⅱ: selected processor does not support `xxxxx’ in Thumb mode
修改Makfile，添加支持软/硬件浮点参数(需结合具体使用的硬件平台，本工程基于STM32F303CCT6具有浮点运算单元FPU)

# fpu FPU = -mfpu=fpv4-sp-d16 # float-abi FLOAT-ABI = -mfloat-abi=hard 

ERROR Ⅲ:error: unknown type name ‘uintx_t’; did you mean ‘wint_t’?
解决方法：
添加以下头文件

#include <stdint.h> 

ERROR Ⅳ:交叉编译arm-none-eabi-gcc编译汇编文件（startup_stm32f10x_hd.S）出错
make[1]: Entering directory /home/demo/testPrij/stm32lib/CMSIS/DeviceSupport' arm-none-eabi-gcc -c -mthumb -mcpu=cortex-m3 -mthumb-interwork -I. -x assembler-with-cpp -Wa,-adhlns=startup_stm32f10x_hd.lst,-ggdb startup_stm32f10x_hd.S -o startup_stm32f10x_hd.o startup_stm32f10x_hd.S: Assembler messages: startup_stm32f10x_hd.S:1: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:2: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:3: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:4: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:5: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:6: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:7: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:8: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:9: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:10: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:11: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:12: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:13: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:14: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:15: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:16: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:17: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:18: Error: junk at end of line, first unrecognized character is *' startup_stm32f10x_hd.S:19: Error: junk at end of line, first unrecognized character is’
startup_stm32f10x_hd.S:20: Error: junk at end of line, first unrecognized character is `*’

修改方法：

将后缀.s改为.S 

后期遇到其他的问题会更新…

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