From 5c511ff597b4b541beb9ec4ce31cbb5363a0233e Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue, 19 Apr 2016 17:22:22 -0700
Subject: [PATCH] Avoid AC_PREPROC_IFELSE glitch in configure.ac
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

Problem reported by Angelo Graziosi in:
http://lists.gnu.org/archive/html/emacs-devel/2016-04/msg00545.html
* configure.ac (gl_gcc_warnings): Work around an Autoconf glitch:
AC_PREPROC_IFELSE doesn’t generate a simple shell command.
---
 configure.ac | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index dbb5ad27c9..1cd9017d19 100644
--- a/configure.ac
+++ b/configure.ac
@@ -879,8 +879,9 @@ AC_ARG_ENABLE([gcc-warnings],
    # however, if there is also a .tarball-version file it is probably
    # just a release imported into Git for patch management.
    gl_gcc_warnings=no
-   test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version &&
+   if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
      gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])]
+   fi
 )
 
 # clang is unduly picky about some things.
-- 
2.39.2