jpeg and gtk

["Bill Cunningham" <billcm charter net>]

    Paul,

I have two files in usr/local/lib/pkgconfig they are libpng.pc and
libpng12.pc. I checked the last line of libpng.pc and the cflags was exactly
as yours except /libpng12 was missing after {includedir}. Could this have
something to do with m4 since you mentioned macros? I installed a new m4
into /usr. Anyway I'll change the libpng.pc file and see what happens.

Bill