Some pkgconfig files depend on others, e.g. /usr/lib32/pkgconfig/xft.pc contains a line "Requires: xproto". Without xproto.pc being installed, pkg-config for xft fails: $ PKG_CONFIG_LIBDIR=/usr/lib32/pkgconfig pkg-config --cflags xft Package xproto was not found in the pkg-config search path. Perhaps you should add the directory containing `xproto.pc' to the PKG_CONFIG_PATH environment variable Package 'xproto', required by 'xft', not found At least the following files appear to be missing (i.e. they are referenced by others that are installed by emul-linux-x86-xlibs): /usr/lib32/pkgconfig/compositeproto.pc /usr/lib32/pkgconfig/damageproto.pc /usr/lib32/pkgconfig/fixesproto.pc /usr/lib32/pkgconfig/inputproto.pc /usr/lib32/pkgconfig/kbproto.pc /usr/lib32/pkgconfig/printproto.pc /usr/lib32/pkgconfig/pthread-stubs.pc /usr/lib32/pkgconfig/randrproto.pc /usr/lib32/pkgconfig/recordproto.pc /usr/lib32/pkgconfig/renderproto.pc /usr/lib32/pkgconfig/videoproto.pc /usr/lib32/pkgconfig/xextproto.pc /usr/lib32/pkgconfig/xf86dgaproto.pc /usr/lib32/pkgconfig/xf86vidmodeproto.pc /usr/lib32/pkgconfig/xineramaproto.pc /usr/lib32/pkgconfig/xproto.pc
The emul-linux-x86 packages have been removed.