linux - PKG_CONFIG_PATH 不清除

Question

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。

Answer 1

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'