From 84bfa333bb4fa05e37a02a68dfee55d228860e99 Mon Sep 17 00:00:00 2001
From: guilhermesena1 <desenabr@usc.edu>
Date: Fri, 23 Sep 2022 00:24:42 +0100
Subject: [PATCH] adding the -lgomp flag check for clang++ compatibility of
 openmp using autotools

---
 m4/ax_openmp.m4 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/m4/ax_openmp.m4 b/m4/ax_openmp.m4
index 90d72d9..4712162 100644
--- a/m4/ax_openmp.m4
+++ b/m4/ax_openmp.m4
@@ -79,7 +79,7 @@ ax_cv_[]_AC_LANG_ABBREV[]_openmp=unknown
 #                -xopenmp (Sun), -omp (Tru64),
 #                -qsmp=omp (AIX),
 #                none
-ax_openmp_flags="-fopenmp -openmp -qopenmp -mp -xopenmp -omp -lomp -qsmp=omp none"
+ax_openmp_flags="-fopenmp -openmp -qopenmp -mp -xopenmp -omp -lomp -lgomp -qsmp=omp none"
 if test "x$OPENMP_[]_AC_LANG_PREFIX[]FLAGS" != x; then
   ax_openmp_flags="$OPENMP_[]_AC_LANG_PREFIX[]FLAGS $ax_openmp_flags"
 fi