Tobias, Would it be possible to add a cmake option to disable the use of cloog in the polly build for 3.4? Currently the toplevel CMakeLists.txt in polly has... FIND_PACKAGE(Isl REQUIRED) FIND_PACKAGE(Gmp REQUIRED) FIND_PACKAGE(Cloog) FIND_PACKAGE(Pluto) with no cmake option to avoid executing... FIND_PACKAGE(Cloog) I have been deinstalling the fink cloog packages, so that cmake/FindCloog.cmake doesn't find the CLOOG_INCLUDE_DIR/CLOOG_LIBRARY and set CLOOG_FOUND TRUE, as well as passing cmake -DCLOOG_FIND_REQUIRED=0. It would be much cleaner if we had a cmake option that would prevent FIND_PACKAGE(Cloog) from executing in the toplevel CMakeLists.txt. Also, shouldn't the default for polly 3.4 be to disable Cloog so that it uses an isl-only build? Jack