I'm doing some gtk+ programming on OSX. I use configure scripts and pkg-config to get the cflags and include paths and such as is typical for a gtk app. The problem I am having... originally I tried compiling something before I had installed the gtk+osx libraries. It failed because gtk+ wasn't installed... Now I have installed the libraries and pkg-config --cflags gtk+ returns all the correct information. However, the pkg-config answer is being cached somehow so it still fails when I issue a ./configure. Does anyone know how to clear this cache? It appears to be a seperate cache from the standard config.cache file.