I tried installing Zope Interface on FC4 using GCC 4, and I received the following error: running install running build running build_py running build_ext building 'zope.interface._zope_interface_coptimizations' extension gcc -pthread -fno-strict-aliasing -DNDEBUG -O2 -g -pipe -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -m32 -march=i386 -mtune=pentium4 -fasynchronous-unwind-tables -D_GNU_SOURCE -fPIC -fPIC -IDependencies/zope.interface-ZopeInterface-3.0.0/zope.interface -I/usr/include/python2.4 -c Dependencies/zope.interface-ZopeInterface-3.0.0/zope.interface/_zope_interface_coptimizations.c -o build/temp.linux-i686-2.4/Dependencies/zope.interface-ZopeInterface-3.0.0/zope.interface/_zope_interface_coptimizations.o Dependencies/zope.interface-ZopeInterface-3.0.0/zope.interface/_zope_interface_coptimizations.c:339: error: static declaration of ‘SpecType’ follows non-static declaration Dependencies/zope.interface-ZopeInterface-3.0.0/zope.interface/_zope_interface_coptimizations.c:73: error: previous declaration of ‘SpecType’ was here error: command 'gcc' failed with exit status 1 Does Zope not yet work with GCC 4? Is there anything I can do to work around this? Thanks, Chris Spencer