我正在试验 pkg-config。
pkg-config --list-all
仍然显示包列表，即使 PKG_CONFIG_PATH 为空也是如此。
最佳答案
如果变量为空，则使用标准目录/usr/share/pkgconfig和 /usr/lib/<arch>/pkgconfig .
看看我的例子:
$ pkg-config --debug 2>&1 | head
no output option set, defaulting to --exists
Error printing disabled by default due to use of output options --exists, --atleast/exact/max-version or no output option at all. Value of --print-errors: 0
Error printing disabled
Adding virtual 'pkg-config' package to list of known packages
Cannot open directory '/usr/local/lib/powerpc64le-linux-gnu/pkgconfig' in package search path: No such file or directory
Cannot open directory '/usr/local/lib/pkgconfig' in package search path: No such file or directory
Cannot open directory '/usr/local/share/pkgconfig' in package search path: No such file or directory
Scanning directory '/usr/lib/powerpc64le-linux-gnu/pkgconfig'
关于linux - PKG_CONFIG_PATH 不清除，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29654092/