%general-entities; ]> The pkgconf compilation in the multilib mirror does not cover pkgconf personalities which are needed for some lib32 variants of packages such as Gstreamer. This part is not necessary if you only intend to follow the Steam chapter and not the Wine chapter. The pkgconf personalities allow for pkgconf to be ran without having to specify the pkgconfig path. Create the following personalties as the root user: mkdir -pv /usr/share/pkgconfig/personality.d cat > /usr/share/pkgconfig/personality.d/x86_64-pc-linux-gnu.personality << "EOF" Triplet: x86_64-pc-linux-gnu SysrootDir: / DefaultSearchPaths: /usr/lib/pkgconfig:/usr/share/pkgconfig SystemIncludePaths: /usr/include SystemLibraryPaths: /usr/lib EOF cat > /usr/share/pkgconfig/personality.d/i686-pc-linux-gnu.personality << "EOF" Triplet: i686-pc-linux-gnu SysrootDir: / DefaultSearchPaths: /usr/lib32/pkgconfig:/usr/share/pkgconfig SystemIncludePaths: /usr/include SystemLibraryPaths: /usr/lib32 EOF Again as the root user, create the symlinks that enable pkgconf to find the personalites: ln -sv pkgconf /usr/bin/x86_64-pc-linux-gnu-pkg-config ln -sv pkgconf /usr/bin/i686-pc-linux-gnu-pkg-config Now verify that the x86_64 pkg-config is using the right personality: x86_64-pc-linux-gnu-pkg-config --dump-personality The result should be: Triplet: x86_64-pc-linux-gnu SysrootDir: / DefaultSearchPaths: /usr/lib/pkgconfig /usr/share/pkgconfig SystemIncludePaths: /usr/include SystemLibraryPaths: /usr/lib Then verify the i686 pkg-config is using the right personality: i686-pc-linux-gnu-pkg-config --dump-personality The result should be: Triplet: i686-pc-linux-gnu SysrootDir: / DefaultSearchPaths: /usr/lib32/pkgconfig /usr/share/pkgconfig SystemIncludePaths: /usr/include SystemLibraryPaths: /usr/lib32