arm-none-eabi ,cygwin 编译的一个问题

发布于 2012-12-03 11:48:30 浏览：8865 订阅该版

最近在windows7上编译rtt，考虑到用cygwin上的git,svn同步代码方便，希望把scons编译方式也加到cygwin上，遇到了一个
`sh: arm-none-eabi-gcc: command not found`
的问题

具体步骤如下：
1 安装cygwin，选择full install(带有python)
2 安装scons (python setup.py install)
3 安装arm-2012.09-63-arm-none-eabi-i686-mingw32.tar.bz2 (tar -jxvf arm-2012.09-63-arm-none-eabi-i686-mingw32.tar.bz2)
4 将arm-2012.09-63-arm-none-eabi-i686-mingw32解压后的路径export到PATH里

在wh44b0下做scons提示如下

```
$ scons
scons: Reading SConscript files ...
/opt/CrossCompile/CodeSourcery/Sourcery_CodeBench_for_ARM_EABI/bin:/cygdrive/c/linux/rt-thread/tool/arm-2012.09/bin/:/home/dillon.min/bin:/cygdrive/c/software/jd-gui-0.3.5.windows:/usr/local/bin:/usr/bin:/cygdrive/c/Program Files (x86)/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin:/cygdrive/c/Windows/system32:/cygdrive/c/Windows:/cygdrive/c/Windows/System32/Wbem:/cygdrive/c/Windows/System32/WindowsPowerShell/v1.0:/cygdrive/c/Old-Pc-bak/d/share/android-sdk_r10-windows/tools:/cygdrive/c/Old-Pc-bak/d/software/java反编译:/cygdrive/c/Program Files/7-Zip:/cygdrive/c/Python25:/cygdrive/c/Python25/Scripts:/cygdrive/c/Program Files (x86)/Beyond Compare 3:/usr/lib/lapack
scons: done reading SConscript files.
scons: Building targets ...
scons: building associated VariantDir targets: build
arm-none-eabi-gcc -o build/application.o -c -mcpu=arm720t -D__FLASH_BUILD__ -O2 -Ibuild -I. -I/cygdrive/c/linux/rt-thread/rt-2457-git -I/cygdrive/c/linux/rt-thread/rt-2457-git/build -I/cygdrive/c/linux/rt-thread/rt-2457-git/include -I/cygdrive/c/linux/rt-thread/rt-2457-git/libcpu/arm/s3c44b0 -I/cygdrive/c/linux/rt-thread/rt-2457-git/libcpu/arm/common application.c
sh: arm-none-eabi-gcc: command not found
scons: *** [build/application.o] Error 127
scons: building terminated because of errors.
```

但是我手动执行
```
arm-none-eabi-gcc -o build/application.o -c -mcpu=arm720t -D__FLASH_BUILD__ -O2 -Ibuild -I. -I/cygdrive/c/linux/rt-thread/rt-2457-git -I/cygdrive/c/linux/rt-thread/rt-2457-git/build -I/cygdrive/c/linux/rt-thread/rt-2457-git/include -I/cygdrive/c/linux/rt-thread/rt-2457-git/libcpu/arm/s3c44b0 -I/cygdrive/c/linux/rt-thread/rt-2457-git/libcpu/arm/common application.c
```
是可以把application.o生成到build下的

可能问题就出在scons里对`arm-none-eabi-gcc`查找上出了问题，在building.py里加了一个 `print os.environ['PATH']`
说明gcc的工具是在路径里的，就比较迷惑了

13 个回答

bernard 2012-12-03

这家伙很懒，什么也没写！

bbstr 2012-12-03

这家伙很懒，什么也没写！

`arm-none-eabi-gcc`找不到的问题解决了，但是又遇到一个问题
需要把CYGPATH这个环境变量设置进去，否则`arm-none-eabi-gcc`识别不了`cygwin`下的头文件路径

在bash下，做下列命令就可以了
`export CYGPATH=c:/cygwin/bin/cygpath`
再手动做编译
```
arm-none-eabi-gcc -o build/application.o -c -mcpu=arm720t -D__FLASH_BUILD__ -O2 -Ibuild -I. -I/cygdrive/c/linux/rt-thread/rt-2457-git -I/cygdrive/c/linux/rt-thread/rt-2457-git/build -I/cygdrive/c/linux/rt-thread/rt-2457-git/include -I/cygdrive/c/linux/rt-thread/rt-2457-git/libcpu/arm/s3c44b0 -I/cygdrive/c/linux/rt-thread/rt-2457-git/libcpu/arm/common application.c
```
是可以编译

但是做scons就报错
```
$ scons
scons: Reading SConscript files ...
scons: done reading SConscript files.
scons: Building targets ...
scons: building associated VariantDir targets: build
arm-none-eabi-gcc -o build/application.o -c -mcpu=arm720t -D__FLASH_BUILD__ -O2 -Ibuild -I. -I/cygdrive/c/linux/rt-thread/rt-2457-git -I/cygdrive/c/l/cygdrive/c/linux/rt-thread/rt-2457-git/include -I/cygdrive/c/linux/rt-thread/rt-2457-git/libcpu/arm/s3c44b0 -I/cygdrive/c/linux/rt-thread/rt-2457-gi
application.c:19:22: fatal error: rtthread.h: No such file or directory
compilation terminated.
scons: *** [build/application.o] Error 1
scons: building terminated because of errors.
```
找不到`rtthread.h`

不知道怎么把`CYGPATH`这个环境变量和`scons`里调用`arm-none-eabi-gcc`这个过程糅合到一起？