linux 編譯kernel與svn版本衝突解決方法

現象

系統原本能夠正常編譯linux系統kernel，但在安裝svn後，kernel編譯出錯。

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] 錯誤 1
make[3]: *** [drivers/gpu/mali/mali] 錯誤 2
make[2]: *** [drivers/gpu/mali] 錯誤 2
make[1]: *** [drivers/gpu] 錯誤 2
make: *** [drivers] 錯誤 2
make: *** 正在等待未完成的任務....

緣由分析

定位到 drivers/gpu/mali/ump/Makefile.common 和 drivers/gpu/mali/mali/Makefile 兩個文件中都有關於SVN_REV:=xxxx的語句，正常狀況下SVN_REV:=爲空，當檢查到svn版本後，SVN_REV:=有了值，致使腳本中判斷走入錯誤分支。

解決方法

將兩個文件中的SVN_REV值都賦值爲空「」便可。

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 := ""

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