For libghemical, it looks like libghemical.pc needs to be added to the the AC_OUTPUT in the configure.in. Now here is my question to anyone who might be able to answer. Currently my pkg-config only looks in /usr/lib/pkgconfig for the .pc files. Now, i know i can add /usr/local/lib/pkgconfig to the list but the .pc files for mopac7 (which i am just noting, this is not the mopac development list) AND libghemical are no even getting installed there. If i'm possibly doing something wrong let me know, else i just thought i'd let you know.