>From ae26b9b44c183c41b84fc36ff70082713295d621 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Wed, 22 Jul 2020 12:56:19 -0700
Subject: [PATCH] Port AC_F77_LIBRARY_LDFLAGS to oneAPI HPC Toolkit
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Problem reported by Bill Dieter in:
https://lists.gnu.org/r/bug-autoconf/2020-07/msg00089.html
* lib/autoconf/fortran.m4 (_AC_FC_LIBRARY_LDFLAGS):
Defend against ‘clang -mllvm -loopopt=0’.
---
 lib/autoconf/fortran.m4 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/autoconf/fortran.m4 b/lib/autoconf/fortran.m4
index 0a0c4168..59a8859b 100644
--- a/lib/autoconf/fortran.m4
+++ b/lib/autoconf/fortran.m4
@@ -698,6 +698,7 @@ while test $[@%:@] != 1; do
 	-zallextract*| -zdefaultextract)
 	  ac_cv_[]_AC_LANG_ABBREV[]_libs="$ac_cv_[]_AC_LANG_ABBREV[]_libs $ac_arg"
 	  ;;
+	-mllvm) ${2+shift};; # Defend against 'clang -mllvm -loopopt=0'.
 	  # Ignore everything else.
   esac
 done
-- 
2.17.1