linux编译kernel和svn版本冲突的解决办法

现象

系统本来可以正常编译linux系统kernel，但在安装svn后，kernel编译出错。

chk   include/linux/version.h
 chk   include/generated/utsrelease.h
make[1]: `include/generated/mach-types.h' is up to date.
 call  scripts/checksyscalls.sh
 chk   include/generated/compile.h
gcc: directory: no such file or directory
gcc: directory": no such file or directory
<command-line>:0: warning: missing terminating " character
gcc: directory: no such file or directory
gcc: directory": no such file or directory
<command-line>:0: warning: missing terminating " character
gcc: directory: no such file or directory
gcc: directory": no such file or directory
<command-line>:0: warning: missing terminating " character
 cc   drivers/gpu/mali/mali/common/mali_kernel_core.o

arm-eabi-gcc: error: ": no such file or directory
make[4]: *** [drivers/gpu/mali/mali/common/mali_kernel_core.o] 错误 1
make[3]: *** [drivers/gpu/mali/mali] 错误 2
make[2]: *** [drivers/gpu/mali] 错误 2
make[1]: *** [drivers/gpu] 错误 2
make: *** [drivers] 错误 2
make: *** 正在等待未完成的任务....

原因分析

定位到 drivers/gpu/mali/ump/makefile.common 和 drivers/gpu/mali/mali/makefile 两个文件中都有关于 svn_rev:=xxxx 的语句，正常情况下 svn_rev:= 为空，当检查到svn版本后， svn_rev:= 有了值，导致脚本中判断走入错误分支。

解决方法

将两个文件中的 svn_rev 值都赋值为空 “” 即可。

drivers/gpu/mali/ump/makefile.common：

 16 # get subversion revision number, fall back to 0000 if no svn info is available
 17 #svn_rev:=$(shell ((svnversion | grep -qv exported && echo -n 'revision: ' && svnversion) || git svn info | sed -e 's/$$$$/m/' | grep     '^revision: ' || echo ${mali_release_name}) 2>/dev/null | sed -e 's/^revision: //')
 19 svn_rev:=""

drivers/gpu/mali/mali/makefile：

117 #svn_rev := $(shell (cd $(driver_dir); (svnversion | grep -qv exported && svnversion) || git svn info | grep '^revision: '| sed -e 's/    ^revision: //' ) 2>/dev/null )
119 svn_rev := ""

总结

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