[Kernel] error: ‘PATH_MAX’ undeclared (first use in this function)
如標題所說，今天在嘗試 Build Kernel 時發現了這個問題： scripts/mod/sumversion.c: In function ‘get_src_version’: scripts/mod/sumversion.c:384: error: ‘PATH_MAX’ undeclared ( first use in this function ) scripts/mod/sumversion.c:384: error: ( Each undeclared identifier is reported only once scripts/mod/sumversion.c:384: error: for each function it appears in. ) scripts/mod/sumversion.c:384: warning: unused variable ‘filelist’ make [ 4 ] : *** [ scripts/mod/sumversion.o ] Error 1 make [ 3 ] : *** [ scripts/mod ] Error 2 make [ 2 ] : *** [ scripts ] Error 2 make [ 2 ] : Leaving directory ` /home/steven_wu/dsr1000n/linux/kernel_2.6/linux ' make[1]: *** [linux] Error 2 make[1]: Leaving directory `/home/steven_wu/dsr1000n/linux/kernel_2.6' make: *** [ kernel ] Error 2 這時只需要： vim scripts/mod/sumversion.c 查看最上面的宣告中是否有 include limits.h ，若沒有，則加入一行： #include <limits.h> -- 做個筆記