--- hypre-2.9.0b.ebuild	2014-04-19 01:26:47.910331901 +0200
+++ hypre-2.9.0b.ebuild	2014-04-19 01:30:27.407587807 +0200
@@ -17,6 +17,8 @@
 KEYWORDS="~amd64 ~x86 ~amd64-linux ~x86-linux"
 IUSE="blas doc examples fortran lapack mpi"
 
+REQUIRED_USE="mpi? ( fortran lapack )"
+
 RDEPEND="
 	sci-libs/superlu
 	blas? ( virtual/blas )
@@ -47,10 +49,13 @@
 }
 
 src_configure() {
+	if use mpi; then
+	    CC=mpicc CXX=mpicxx
+	fi
+
 	local myeconfargs+=(
 		--enable-shared
 		--without-superlu
-		--without-strict-checking
 		$(use_enable fortran)
 		$(use_with mpi MPI)
 	)