pkg-config

Wikipedia open wikipedia design.

pkg-config
Original author(s) James Henstridge; rewritten by Havoc Pennington
Developer(s) Tollef Fog Heen / freedesktop.org
Initial release 2000; 18 years ago (2000) or earlier
Stable release
0.29.2 / March 20, 2017; 17 months ago (2017-03-20)
Repository Edit this at Wikidata
Written in C
Operating system Unix-like
Type Programming tool
License GNU GPL
Website www.freedesktop.org/wiki/Software/pkg-config/

pkg-config is a computer program that provides a unified interface for querying installed libraries for the purpose of compiling software from its source code. It allows programmers and installation scripts to work without explicit knowledge of detailed library path information. pkg-config was originally designed for Linux, but it is now also available for the various BSDs, Microsoft Windows, Mac OS X, and Solaris.

It outputs various information about installed libraries. This information may include:

The first implementation was written in shell. Later, it was rewritten in C using the GLib library.

Synopsis[edit]

When a library is installed (automatically through the use of an RPM, deb, or other binary packaging system or by compiling from the source), a .pc file should be included and placed into a directory with other .pc files (the exact directory is dependent upon the system and outlined in the pkg-config man page). This file has several entries.

These entries typically contain a list of dependent libraries that programs using the package also need to compile. Entries also typically include the location of header files, version information and a description.

Here is an example .pc file for libpng:

prefix=/usr/local exec_prefix=${prefix} libdir=${exec_prefix}/lib includedir=${exec_prefix}/include   Name: libpng Description: Loads and saves PNG files Version: 1.2.8 Libs: -L${libdir} -lpng12 -lz Cflags: -I${includedir}/libpng12 

This file demonstrates how libpng informs that its libraries can be found in /usr/local/lib and its headers in /usr/local/include, that the library name is libpng, and that the version is 1.2.8. It also gives the additional linker flags that are needed to compile code that uses this library.

Here is an example of usage of pkg-config while compiling:

$ gcc -o test test.c $(pkg-config --libs --cflags libpng) 

External links[edit]



This page is based on a Wikipedia article written by contributors (read/edit).
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.

Destek