Linux compiler library search-Linux general technology-Linux programming and kernel information. The following is a detailed description. By default, the compiler only uses the library files under the/lib and/usr/lib directories.
You can add the path of the dynamic link library required for compilation in the file ld. so. conf. After adding the file, run the/sbin/ldconfig command. Make the configuration in the file take effect.
When installing a library, you can use the -- prefix/usr option to directly install the library to usr/lib.
When the program is compiled, use the script Configure to check whether the dependent library meets the conditions. usr/bin/pkgconfig is used to obtain the original data information of the library, this pkgcongfig program needs to be written from *. obtain information in the pc file.
When installing the library file, a folder of.../pkgconfig will be generated under.../lib, where information about the installation library file is stored.
The Compilation Program will use pkgconfig -- the library or package Configuration Utility to read the original data information of the installation library. How can the utility find the pkg-config folder? You can use the PKG_OCNFIG_PATH environment variable to specify the pkg-config folder.
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