nginx 1.3.6 编译报错 [-Werror=unused-but-set-variable]的解决

遇到类似 [-Werror=unused-but-set-variable]的错误：

/home/zhangbin/mserver/nginx/nginx_mod_h264_streaming-2.2.7/src/mp4_reader.c:529:22: error: variable ‘level_indication’ set but
not used [-Werror=unused-but-set-variable]

/home/zhangbin/mserver/nginx/nginx_mod_h264_streaming-2.2.7/src/mp4_reader.c:528:22: error: variable ‘profile_compatibility’ set but not used [-Werror=unused-but-set-variable]

/home/zhangbin/mserver/nginx/nginx_mod_h264_streaming-2.2.7/src/mp4_reader.c:527:22: error: variable ‘profile_indication’ set but not used [-Werror=unused-but-set-variable]

/home/zhangbin/mserver/nginx/nginx_mod_h264_streaming-2.2.7/src/mp4_reader.c:526:22: error: variable ‘configuration_version’ set but not used [-Werror=unused-but-set-variable]

cc1: all warnings being treated as errors

make[2]: *** [objs/addon/src/mp4_reader.o] Error 1

make[2]: Leaving directory `/home/zhangbin/mserver/nginx/nginx-1.3.6'

make[1]: *** [build] Error 2

make[1]: Leaving directory `/home/zhangbin/mserver/nginx/nginx-1.3.6'

make: *** [all] Error 2

root@ubuntu:/home/zhangbin/mserver/nginx/nginx_mod_h264_streaming-2.2.7#

直接修改nginx_mod_h264_streaming-2.2.7/的Makefile，没看到Werror啊。

Makefile是：

all:

cd $(NGINX) && ./configure --sbin-path=/usr/local/sbin --add-module=$(PWD) --with-debug --with-http_flv_module

make --directory=$(NGINX)



CONFIG里有CFLAGS：

CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE -DBUILDING_NGINX"

Makefile会去读CONFIG么？

nginx的Makefile：

default: build

clean:

rm -rf Makefile objs

build:

$(MAKE) -f objs/Makefile

$(MAKE) -f objs/Makefile manpage

objs的Makefile：

CC =
gcc

CFLAGS = -pipe -O -W -Wall -Wpointer-arith -Wno-unused-parameter -Werror -g -D_LARGEFILE_SOURCE -DBUILDING_NGINX

CPP = gcc -E

LINK = $(CC)

ALL_INCS = -I src/core \

-I src/event \

-I src/event/modules \

-I src/os/unix \

-I objs \

-I src/http \

-I src/http/modules \

-I src/mail

去掉Werror就可以了。

实际使用的编译指令是：

objs/addon/src/mp4_reader.o:
$(ADDON_DEPS) \

/home/zhangbin/mserver/nginx/nginx_mod_h264_streaming-2.2.7/src/mp4_reader.c

$(CC) -c $(CFLAGS) $(ALL_INCS) \

-o objs/addon/src/mp4_reader.o \

/home/zhangbin/mserver/nginx/nginx_mod_h264_streaming-2.2.7/src/mp4_reader.c

所以264_mod的编译是nginx的Makefile控制的，与264内部自带的Makefile无关。