libvorbis-1.2.0 won't build under OS X 10.5:

$ ./configure checking build system type... powerpc-apple-darwin9.1.0 checking host system type... powerpc-apple-darwin9.1.0 checking target system type... powerpc-apple-darwin9.1.0 checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... ./install-sh -c -d checking for gawk... no checking for mawk... no checking for nawk... no checking for awk... awk checking whether make sets $(MAKE)... yes checking whether to enable maintainer-specific portions of Makefiles... no checking for gcc... gcc checking for C compiler default output file name... configure: error: C compiler cannot create executables See `config.log' for more details.

file config.log was not created, so no further information in this error is available.