nginx編譯報錯src/core/ngx_murmurhash.c:37:11: 錯誤：this statement may fall through [-Werror=implicit-fallthrough=] h ^= data[2]

報錯信息如下

make -f objs/Makefile
make[1]: 進入目錄“/opt/nginx-1.8.1”
cc -c -pipe  -O -W -Wall -Wpointer-arith -Wno-unused -Werror -g  -I src/core -I src/event -I src/event/modules -I src/os/unix -I objs \
        -o objs/src/core/ngx_murmurhash.o \
        src/core/ngx_murmurhash.c
src/core/ngx_murmurhash.c: 在函數‘ngx_murmur_hash2’中:
src/core/ngx_murmurhash.c:37:11: 錯誤：this statement may fall through [-Werror=implicit-fallthrough=]
         h ^= data[2] << 16;
         ~~^~~~~~~~~~~~~~~~
src/core/ngx_murmurhash.c:38:5: 附注：here
     case 2:
     ^~~~
src/core/ngx_murmurhash.c:39:11: 錯誤：this statement may fall through [-Werror=implicit-fallthrough=]
         h ^= data[1] << 8;
         ~~^~~~~~~~~~~~~~~
src/core/ngx_murmurhash.c:40:5: 附注：here
     case 1:
     ^~~~
cc1：所有的警告都被當作是錯誤
make[1]: *** [objs/Makefile:431：objs/src/core/ngx_murmurhash.o] 錯誤 1
make[1]: 離開目錄“/opt/nginx-1.8.1”
make: *** [Makefile:8：build] 錯誤 2

原因：將警告當成錯誤處理

解決錯誤1：進入到nginx-1.6.3目錄下（解壓的目錄）

找到當前目錄下找到objs文件夾，並進入，打開文件Makefile,找到有一下內容的這行：

[root@lnmp nginx-1.8.1]# vim objs/Makefile
CFLAGS =  -pipe  -O -W -Wall -Wpointer-arith -Wno-unused-parameter -Werror -g　

-Werror: gcc將所有的警告當成錯誤進行處理把這行內容中的 “-Werror”去掉

摘自：https://bbs.cnbugs.com/read-37-1.html

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