build on f15

Commit 215730cbec40a6fe482fabb7f1ecc3d747f1b5d2 made it so I can't build against the F15 GCC: cc -I/usr/lib/gcc/x86_64-redhat-linux/4.6.0/plugin/include -fPIC -O2 -Wall -Werror -g -I/usr/include/python2.7 -I/usr/include/python2.7 -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -lpthread -ldl -lutil -lm -lpython2.7 -Xlinker -export-dynamic -c -o gcc-python-option.o gcc-python-option.c gcc-python-option.c:23:53: fatal error: c-family/c-common.h: No such file or directory Maybe some kind of configury could be used so that the plugin can compile against both this version of GCC and against newer ones? Tom