diff --git a/MPI/hdf5/build b/MPI/hdf5/build
index 221d464..338bcc0 100755
--- a/MPI/hdf5/build
+++ b/MPI/hdf5/build
@@ -3,25 +3,33 @@
 SOURCE_URL="https://support.hdfgroup.org/ftp/HDF5/current${V_MAJOR}${V_MINOR}/src/hdf5-$V.tar.bz2"
 
 pbuild::configure() {
-	CC=$MPICC
+	declare -a config_args=()
+	export CC=$MPICC
 	export CXX=$MPICXX
-	F77=$MPIF77
-	F90=$MPIF90
-	FC=$MPIFC
-	FORTRAN=$MPIFORTRAN
 
-	local conf=''
-	conf+=' --enable-shared'
-	conf+=' --enable-parallel'
-	conf+=' --enable-cxx'
-	conf+=' --enable-fortran'
-	conf+=' --enable-unsupported'
-	#conf+=' --enable-threadsafe'
-	conf+=' --with-pic'
+	case "${COMPILER}" in
+		clang-macos )
+			# we do not have Fortran in Xcode
+			;;
+		* )
+			F77=$MPIF77
+			F90=$MPIF90
+			FC=$MPIFC
+			FORTRAN=$MPIFORTRAN
+			config_args+=( "--enable-fortran" )
+			;;
+	esac
+
+	config_args+=( "--enable-shared" )
+	config_args+=( "--enable-parallel" )
+	config_args+=( "--enable-cxx" )
+	config_args+=( "--enable-unsupported" )
+	#config_args+=( "--enable-threadsafe" )
+	config_args+=( "--with-pic" )
 
 	"${MODULE_SRCDIR}"/configure \
 		--prefix="${PREFIX}" \
-		${conf} \
+		"${config_args[@]}" \
 		|| exit 1
 }