Index: Makefile
===================================================================
--- Makefile
+++ Makefile
@@ -31,10 +31,14 @@
 
 MPI_CMAKE_BOOL=		BUILD_MPI
 MPI_LIB_DEPENDS=	libmpi.so:net/openmpi
+MPI_USES=		compiler:c11
 
 OPENMP_USES=		localbase
-OPENMP_CMAKE_BOOL=	BUILD_OMP
-OPENMP_LIB_DEPENDS=	libomp.so:devel/openmp
+OPENMP_CMAKE_BOOL=	${OPENMP_CMAKE_BOOL_${CHOSEN_COMPILER_TYPE}}
+OPENMP_CMAKE_BOOL_gcc=	CMAKE_DISABLE_FIND_PACKAGE_OpenMP
+OPENMP_CMAKE_BOOL_clang=	BUILD_OMP
+OPENMP_LIB_DEPENDS=	${OPENMP_LIB_DEPENDS_${CHOSEN_COMPILER_TYPE}}
+OPENMP_LIB_DEPENDS_clang=	libomp.so:devel/openmp
 
 FFMPEG_BUILD_DEPENDS=	ffmpeg:multimedia/ffmpeg
 FFMPEG_RUN_DEPENDS=	ffmpeg:multimedia/ffmpeg