pkg-config — Obtain compilation and linking flags for libraries
pkg-config [options] [libraries]
To get help on pkg-config
pkg-config --help
To list all the compiling flags needed when compiling against gtk
pkgconfig --cflags gtk+-2.0
To list all the linking flags needed when linking against gtk
pkgconfig --libs gtk+-2.0
To compile and link a program against gtk
gcc -Wall -g hello.c -o hello `pkg-config --cflags --libs gtk+-2.0`
To list all the libraries that pkg-config knows about
pkgconfig --list-all