auto/stubs及auto/summary脚本分析-part21
本章主要介绍一下auto/stubs及auto/summary两个脚本。前一个脚本要定义两个宏；后一个主要是打印出相关的一些重要信息。
1. auto/stubs脚本
脚本内容如下：
# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.
have=NGX_SUPPRESS_WARN . auto/have
have=NGX_SMP . auto/have向$NGX_AUTO_CONFIG_H头文件(这里为objs/ngx_auto_config.h)中写入如下宏定义：
#ifndef NGX_SUPPRESS_WARN #define NGX_SUPPRESS_WARN 1 #endif #ifndef NGX_SMP #define NGX_SMP 1 #endif
前一个宏定义表示抑制相应警告信息;后一个主要用于多处理器原子锁.
2. auto/summary脚本
脚本内容如下：
# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.
echo
echo "Configuration summary"
if [ $USE_THREADS = YES ]; then
echo " + using threads"
fi
if [ $USE_PCRE = DISABLED ]; then
echo " + PCRE library is disabled"
else
case $PCRE in
YES) echo " + using system PCRE library" ;;
NONE) echo " + PCRE library is not used" ;;
*) echo " + using PCRE library: $PCRE" ;;
esac
fi
case $OPENSSL in
YES) echo " + using system OpenSSL library" ;;
NONE) echo " + OpenSSL library is not used" ;;
*) echo " + using OpenSSL library: $OPENSSL" ;;
esac
case $MD5 in
YES) echo " + md5: using $MD5_LIB library" ;;
NONE) echo " + md5 library is not used" ;;
NO) echo " + using builtin md5 code" ;;
*) echo " + using md5 library: $MD5" ;;
esac
case $SHA1 in
YES) echo " + sha1: using $SHA1_LIB library" ;;
NONE) echo " + sha1 library is not used" ;;
NO) echo " + sha1 library is not found" ;;
*) echo " + using sha1 library: $SHA1" ;;
esac
case $ZLIB in
YES) echo " + using system zlib library" ;;
NONE) echo " + zlib library is not used" ;;
*) echo " + using zlib library: $ZLIB" ;;
esac
case $NGX_LIBATOMIC in
YES) echo " + using system libatomic_ops library" ;;
NO) ;; # not used
*) echo " + using libatomic_ops library: $NGX_LIBATOMIC" ;;
esac
echo
cat << END
nginx path prefix: "$NGX_PREFIX"
nginx binary file: "$NGX_SBIN_PATH"
nginx modules path: "$NGX_MODULES_PATH"
nginx configuration prefix: "$NGX_CONF_PREFIX"
nginx configuration file: "$NGX_CONF_PATH"
nginx pid file: "$NGX_PID_PATH"
END
if test -n "$NGX_ERROR_LOG_PATH"; then
echo " nginx error log file: \"$NGX_ERROR_LOG_PATH\""
else
echo " nginx logs errors to stderr"
fi
cat << END
nginx http access log file: "$NGX_HTTP_LOG_PATH"
nginx http client request body temporary files: "$NGX_HTTP_CLIENT_TEMP_PATH"
END
if [ $HTTP_PROXY = YES ]; then
echo " nginx http proxy temporary files: \"$NGX_HTTP_PROXY_TEMP_PATH\""
fi
if [ $HTTP_FASTCGI = YES ]; then
echo " nginx http fastcgi temporary files: \"$NGX_HTTP_FASTCGI_TEMP_PATH\""
fi
if [ $HTTP_UWSGI = YES ]; then
echo " nginx http uwsgi temporary files: \"$NGX_HTTP_UWSGI_TEMP_PATH\""
fi
if [ $HTTP_SCGI = YES ]; then
echo " nginx http scgi temporary files: \"$NGX_HTTP_SCGI_TEMP_PATH\""
fi
echo "$NGX_POST_CONF_MSG"这里:
- USE_THREADS:在auto/options脚本中初始设置为
NO - PCRE: 被设置为
--with-pcre=../pcre-8.40 - OPENSSL: 被设置为使用系统Openssl
- MD5：被设置为
YES，使用Openssl库中的MD5,MD5_LIB在auto/lib/conf脚本中被设置为OpenSSL. - SHA1： 被设置为
YES，使用Openssl库中的SHA1,SHA1_LIB在auto/lib/conf脚本中被设置为OpenSSL. - ZLIB： 被设置为
--with-zlib=../zlib-1.2.11 - NGX_LIBATOMIC: 值为
NO，并未使用
然后执行如下命令：
cat << END
nginx path prefix: "$NGX_PREFIX"
nginx binary file: "$NGX_SBIN_PATH"
nginx modules path: "$NGX_MODULES_PATH"
nginx configuration prefix: "$NGX_CONF_PREFIX"
nginx configuration file: "$NGX_CONF_PATH"
nginx pid file: "$NGX_PID_PATH"
END打印出路径相关信息：
NGX_PREFIX: /usr/local/nginx NGX_SBIN_PATH: /usr/local/nginx/nginx NGX_MODULES_PATH:/usr/local/nginx/modules NGX_CONF_PREFIX: (empty) NGX_CONF_PATH: /usr/local/nginx/nginx.conf NGX_PID_PATH: /usr/local/nginx/nginx.pid NGX_ERROR_LOG_PATH: /usr/local/nginx/logs/error.log NGX_HTTP_LOG_PATH: /usr/local/nginx/logs/access.log NGX_HTTP_CLIENT_TEMP_PATH: client_body_temp HTTP_PROXY: 在auto/options脚本中默认设置为YES, NGX_HTTP_PROXY_TEMP_PATH使用默认值proxy_temp HTTP_FASTCGI: 在auto/options脚本中默认设置为YES, NGX_HTTP_FASTCGI_TEMP_PATH使用默认值fastcgi_temp。 HTTP_UWSGI: 在auto/options脚本中默认设置为YES, NGX_HTTP_UWSGI_TEMP_PATH使用默认值uwsgi_temp。 HTTP_SCGI: 在auto/options脚本中默认设置为YES, NGX_HTTP_SCGI_TEMP_PATH使用默认值scgi_temp。 NGX_POST_CONF_MSG： (empty)
最后给出一个整体输出结果，以作参考：
Configuration summary
+ using PCRE library: ../pcre-8.40
+ using system OpenSSL library
+ md5: using OpenSSL library
+ sha1: using OpenSSL library
+ using zlib library: ../zlib-1.2.11
nginx path prefix: "/usr/local/nginx"
nginx binary file: "/usr/local/nginx/nginx"
nginx modules path: "/usr/local/nginx/modules"
nginx configuration prefix: "/usr/local/nginx"
nginx configuration file: "/usr/local/nginx/nginx.conf"
nginx pid file: "/usr/local/nginx/nginx.pid"
nginx error log file: "/usr/local/nginx/logs/error.log"
nginx http access log file: "/usr/local/nginx/logs/access.log"
nginx http client request body temporary files: "client_body_temp"
nginx http proxy temporary files: "proxy_temp"
nginx http fastcgi temporary files: "fastcgi_temp"
nginx http uwsgi temporary files: "uwsgi_temp"
nginx http scgi temporary files: "scgi_temp"
参考：
