BuildRequires: pkgconfig(foo) vs. foo-devel
Fedora packages which use
pkg-config to build against a library (e.g. 'foo') on which they depend, SHOULD express their build dependency correctly as
The build infrastructure for a given package will often locate and use required libraries by using
pkgconfig(foo) is the true statement of the build dependency, and is how it should be expressed in the spec file.
For historical reasons, many packages seem to have a hard-coded "
BuildRequires: foo-devel", with the name of the package which currently provides the required pkgconfig module. This is fragile and less portable than simply expressing the real dependency. Where package names change, and/or a required pkgconfig module is later provided by a different package, these hard-coded dependencies break.
Note that it shall still be acceptable to require specific packages by name if they are required for some reason other than a
pkg-config module that they provide.
Packages which build against
libproxy should contain the following:
... and not the following:
This way, if the
libproxy-1.0.pc pkgconfig module is ever provided from a differently-named package (such as by PacRunner once its integration is complete, or by a '
libproxy1' backward-compatibility package as has happened to a number of other libraries in the past), the dependency will continue to be correct.