Le 16/11/2011 00:11, jcc a écrit :

Hi,

I do not quite understand why with BuildRequires and Requires, it is
sometimes necessary to place a pkgconfig(any_lib) instead of simply
any_libin the spec file.

If you have a dependency for any_lib, you'll only get the runtime part of the lib. If you need to build something with the lib, you'll need the buildtime part of the lib, which is generally isolated in the -devel package. Hence the need for a build dependency of either any_lib-devel (always present), or pkgconfig(any_lib), which is a virtual package automatically generated by rpm if a pkgconfig file is present.