libgcj-devel 4.1.0-3 on x86_64 drops libgcj.pc to /usr/lib/pkgconfig which is not in pkg-config's search path. Should be /usr/lib64/pkgconfig. $ pkg-config --libs libgcj Package libgcj was not found in the pkg-config search path. Perhaps you should add the directory containing `libgcj.pc' to the PKG_CONFIG_PATH environment variable No package 'libgcj' found $ ls /usr/lib*/pkgconfig/libgcj.pc /usr/lib/pkgconfig/libgcj.pc
Should be fixed in 4.1.0-16 and above.