--- fftw-3.3.ebuild	2011-08-31 16:58:27.000000000 +0000
+++ fftw-3.3.ebuild	2011-09-27 11:19:28.000000000 +0000
@@ -127,7 +127,7 @@ src_install () {
 	use openmp && [[ ${FFTW_OPENMP} = "--enable-openmp" ]] && u="omp"
 	for f in "${ED}"/usr/lib*/pkgconfig/*.pc; do
 		for u in $(usev mpi) $(usev threads) ${u}; do
-		    sed "s|-lfftw3[lf]\?|&_$u|" "$f" > "${f%.pc}_$u.pc" || die
+		    sed "s|-lfftw3[lf]\?|&_$u &|" "$f" > "${f%.pc}_$u.pc" || die
 		done
 	done
 }