From 432ddf0d3fcf09f993b7070b805e44f6cac8ff1d Mon Sep 17 00:00:00 2001
From: vlefevre <vlefevre@280ebfd0-de03-0410-8827-d642c229c3f4>
Date: Thu, 12 Jul 2018 12:32:16 +0000
Subject: [src/Makefile.am] Corrected check-exported-symbols to avoid a failure
 when the default .SHELLFLAGS value is '-ec' (POSIX) instead of '-c' (GNU
 Make, which is not in POSIX-conforming mode by default). Bug found on FreeBSD
 11.1 (Compile Farm @ HouseGordon.com). (merged changeset r12913 from the
 trunk)

git-svn-id: svn://scm.gforge.inria.fr/svn/mpfr/branches/4.0@12914 280ebfd0-de03-0410-8827-d642c229c3f4
---
 src/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Makefile.am b/src/Makefile.am
index d9e89108d..99892734b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -139,7 +139,7 @@ check-exported-symbols: $(LTLIBRARIES)
 	if [ -f "$(LIBMPFRSO)" ]; then \
 	  gsymbols=`$(NM) -gP "$(LIBMPFRSO)" | perl -ne \
 	    '/^(__gmp[a-z]?_[_0-9A-Za-z]*) +[A-TV-Z]/ and print " $$1"' | \
-	    grep -v '@plt$$'`; \
+	    { grep -v '@plt$$' || true ; }`; \
 	  if [ -n "$$gsymbols" ]; then \
 	    echo "MPFR defines symbols with a GMP reserved prefix:$$gsymbols"; \
 	    exit 1; \
-- 
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