敲黑板：离线状态安装mod_wsgi 是离线安装时出现的问题

查了很多关于安装mod_wsgi的文章，之类我就不细说如何下载解压的步骤了

• 第一步配置安装出现的问题：
  • 在执行make命令安装Makefile时出现了如下问题：

错误代码

     relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; 
     recompile with -fPIC. 
     /usr/local/lib/libpython3.8m.a: could not read symbols: Bad value.

• 出现问题的就是这个 -fPIC ，原因是在python在编译的时候没有执行 -fPIC命令，所以重新编译了一遍python。

步骤

cd 源码
./configure --prefix=/usr/local/python3.8  --enable-shared CFLAGS=-fPIC
make && make install

• 等待编译完成

成功解决了这个问题

继续安装mod_wsgi

• 在我执行make命令安装mod_wsgi时出现了新的错误

错误代码

src/server/wsgi_python.h:24:20: fatal error: Python.h: No such file or directory
 #include <Python.h>
                    ^
compilation terminated.
apxs:Error: Command failed with rc=65536
.
make: *** [src/server/mod_wsgi.la] Error 1

原因

• 我发现我连python环境都进不去，经过查找是Linux系统默认加载/usr/lib下面库文件，python默认安装到非此类文件夹。不过可以通过添加库配置信息解决。

步骤

 cd  /etc/ld.so.conf.d

   vim python3.conf

   编辑 添加库文件路径 /usr/local/python3.8/lib

 保存、退出

  ldconfig 重新加载config

回过头去安装mod_wsgi终于成功了

Libraries have been installed in:
   /usr/local/apache2/modules

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
     during execution
   - add LIBDIR to the `LD_RUN_PATH' environment variable
     during linking
   - use the `-Wl,-rpath -Wl,LIBDIR' linker flag
   - have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
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