mac上nginx扩展nginx_upstream_check_module

安装过程参考：https://www.cnblogs.com/ztlsir/p/8945043.html

问题解决

1. OpenSSL问题
   报错：

./configure: error: SSL modules require the OpenSSL library.
You can either do not enable the modules, or install the OpenSSL library
into the system, or build the OpenSSL library statically from the source
with nginx by using --with-openssl= option.

解决方案：使用brew安装openssl

brew install openssl

然后指定openssl路径，下面是我修改后的命令，openssl路径是默认的安装路径，如有不同请自行修改

./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module --with-pcre --add-module=../nginx_upstream_check_module-master --add-module=../nginx-upstream-fair-master --with-openssl=/usr/local/Cellar/[email protected]/1.1.1g

2. openssl路径错误
   报错：

/Library/Developer/CommandLineTools/usr/bin/make -f objs/Makefile
cd /usr/local/Cellar/[email protected]/1.1.1g \
    && if [ -f Makefile ]; then /Library/Developer/CommandLineTools/usr/bin/make clean; fi \
    && ./config --prefix=/usr/local/Cellar/[email protected]/1.1.1g/.openssl no-shared no-threads  \
    && /Library/Developer/CommandLineTools/usr/bin/make \
    && /Library/Developer/CommandLineTools/usr/bin/make install_sw LIBDIR=lib
/bin/sh: ./config: No such file or directory
make[1]: *** [/usr/local/Cellar/[email protected]/1.1.1g/.openssl/include/openssl/ssl.h] Error 127
make: *** [build] Error 2

在本地找到相关文件，我本地ssl.h的正确路径为/usr/local/Cellar/[email protected]/1.1.1g/include/openssl/ssl.h，修改nginx代码vi auto/lib/openssl/conf

CORE_INCS="$CORE_INCS $OPENSSL/.openssl/include"
CORE_DEPS="$CORE_DEPS $OPENSSL/.openssl/include/openssl/ssl.h"
CORE_LIBS="$CORE_LIBS $OPENSSL/.openssl/lib/libssl.a"
CORE_LIBS="$CORE_LIBS $OPENSSL/.openssl/lib/libcrypto.a"

将路径中的/.openssl去掉

CORE_INCS="$CORE_INCS $OPENSSL/include"
CORE_DEPS="$CORE_DEPS $OPENSSL/include/openssl/ssl.h"
CORE_LIBS="$CORE_LIBS $OPENSSL/lib/libssl.a"
CORE_LIBS="$CORE_LIBS $OPENSSL/lib/libcrypto.a"

修改完后重新执行./configure，然后执行make

3. nginx_upstream_check_module-master模块会报错
   报错：

../nginx_upstream_check_module-master/ngx_http_upstream_check_module.c:16:9: error: unterminated '#pragma pack (push, ...)' at end of file
      [-Werror,-Wpragma-pack]
#pragma pack(push, 1)
        ^
../nginx_upstream_check_module-master/ngx_http_upstream_check_module.c:55:9: note: did you intend to use '#pragma pack (pop)' instead of
      '#pragma pack()'?
#pragma pack()
        ^
             pop
1 error generated.
make[1]: *** [objs/addon/nginx_upstream_check_module-master/ngx_http_upstream_check_module.o] Error 1
make: *** [build] Error 2

参考文档：https://gcc.gnu.org/onlinedocs/gcc-5.2.0/gcc/Structure-Packing-Pragmas.html#Structure-Packing-Pragmas，使用了pack(push)，必须使用一个#pragma pack(pop)终结，直接将55行的#pragma pack()改成#pragma pack(pop)，理论上在代码最后加上pop语句应该也可以。对c相关语言没有太多研究，这里这是为了解决问题。再次执行make命令，成功，完美。