pkg-config找不到.pc文件，尽管它们位于路径中 [英] pkg-config cannot find .pc files although they are in the path

问题描述

我在Mac OSX-Lion上看到pkg-config的一个奇怪问题.为下载的模块运行python安装程序时，出现以下错误:

I am seeing a strange issue with pkg-config on Mac OSX-Lion. When running the python setup for module that I downloaded I receive the following error:

aspen:python toddysm$ sudo ./setup.py install
Password:
`pkg-config --libs --cflags cld` returns in error: 
Package cld was not found in the pkg-config search path.
Perhaps you should add the directory containing `cld.pc'
to the PKG_CONFIG_PATH environment variable
No package 'cld' found

The `cld` C++ library is absent from this system. Please install it.

但是，当检查/usr/local/lib文件夹时，我看到了libs和.pc文件位于pkgconfig子文件夹中

However when checking in the /usr/local/lib folder I see the libs and the .pc file is in the pkgconfig subfolder

aspen:~ toddysm$ cd /usr/local/lib/
aspen:lib toddysm$ ls -al
total 2640
drwxr-xr-x  6 root  wheel      204 Jul  2 17:38 .
drwxr-xr-x  9 root  wheel      306 Jul  2 15:17 ..
-rwxr-xr-x  1 root  wheel  1339516 Jul  2 17:38 libcld.0.dylib
lrwxr-xr-x  1 root  wheel       14 Jul  2 17:38 libcld.dylib -> libcld.0.dylib
-rwxr-xr-x  1 root  wheel      918 Jul  2 17:38 libcld.la
drwxr-xr-x  3 root  wheel      102 Jul  2 17:38 pkgconfig
aspen:lib toddysm$ cd pkgconfig/
aspen:pkgconfig toddysm$ ls -al
total 8
drwxr-xr-x  3 root  wheel  102 Jul  2 17:38 .
drwxr-xr-x  6 root  wheel  204 Jul  2 17:38 ..
-rw-r--r--  1 root  wheel  279 Jul  2 17:38 cld.pc

使用命令行将PKG_CONFIG_PATH设置为指向/usr/local/lib/并没有帮助.出于某种原因将其设置为〜/.bash_profile会使pkg-config无法识别为命令.

Setting PKG_CONFIG_PATH to point to /usr/local/lib/ using the command line doesn't help. Setting it into ~/.bash_profile for some reason makes pkg-config unrecognizable as command.

我的假设是我缺少某种依赖性，但不确定是什么.在Linux上尝试相同操作时，我缺少了Python Dev软件包python2.7-dev，但是我不确定如何在Mac上进行检查(是否存在).

My assumption is that I am missing some dependency but not sure what. When trying the same on Linux I was missing the Python Dev package python2.7-dev but I am not sure how to check for this on Mac (whether is there or not).

任何帮助将不胜感激.

推荐答案

默认情况下，您可以使用以下命令列出pkg-config查找的目录:

You can list the directories pkg-config looks in by default using:

pkg-config --variable pc_path pkg-config

PKG_CONFIG_PATH需要在变量后附加完整的/usr/local/lib/pkgconfig路径名.

PKG_CONFIG_PATH needs the full /usr/local/lib/pkgconfig pathname appended to the variable.

这篇关于pkg-config找不到.pc文件，尽管它们位于路径中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！