2. On the contrary, sometimes I'd like to get inside the implementation of some library, say libpng, but when I try to debug into it I can't. I download its source code, which contains all the .c files, from http://prdownloads.sourceforge.net/l...ar.gz?download. After ./configure, make and make install, the .h files gets into /usr/local/include/libpng12/, the library files get into /usr/local/lib/, but no .c files get into /usr/local/src/ or /usr/src. Is that why there is no source file to debug? How could I fix it?