checking for GKSU... Package libgksu1.2 was not found in the pkg-config search path.
Perhaps you should add the directory containing `libgksu1.2.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libgksu1.2' found
configure: error: Package requirements (libgksu1.2 >= 1.3.3, libgksuui1.0 >= 1.0.6,
                        gtk+-2.0 >= 2.4.0, gnome-keyring-1, gconf-2.0) were not met:



Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables GKSU_CFLAGS
and GKSU_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.


BUT... libgksu1.2.pc 
[root@mrcomputer gksu-1.3.6]# more /usr/local/lib/pkgconfig/libgksu1.2.pc
prefix=/usr/local
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=/usr/local/include

Name: LibGKSu
Version: 1.3.7
Description: GKSu library version 0.
Requires: glib-2.0
Libs: -L${libdir} -lgksu1.2
Cflags: -I${includedir}/libgksu1.2
[root@mrcomputer gksu-1.3.6]#


AND... these all exist...
/usr/local/lib/libgksuui1.0.so.0.0.0
/usr/local/lib/pkgconfig/libgksu1.2.pc
/usr/local/lib/pkgconfig/libgksuui1.0.pc
/usr/local/lib/libgksu1.2.so.0.0.5
/usr/local/lib/libgksuui1.0.so.0
/usr/local/lib/libgksuui1.0.la
/usr/local/lib/libgksu1.2.a
/usr/local/lib/libgksuui1.0.a
/usr/local/lib/libgksuui1.0.so
/usr/local/lib/libgksu1.2.la
/usr/local/lib/libgksu1.2.so.0
/usr/local/lib/libgksu1.2
/usr/local/lib/libgksu1.2/gksu-run-helper
/usr/local/lib/libgksu1.2.so