>From 6fe03f8c62a063866504ef1c746ac01305b53890 Mon Sep 17 00:00:00 2001
From: Alan Third <alan@idiocy.org>
Date: Mon, 1 Jan 2018 15:44:24 +0000
Subject: [PATCH] Use Homebrew installed makeinfo if it exists (bug#29931)

* configure.ac: Add check for Homebrew texinfo install on darwin.
---
 configure.ac | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/configure.ac b/configure.ac
index ec1418b99e..e695e0d791 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1267,6 +1267,13 @@ AC_DEFUN
 AC_SUBST([PAXCTL_dumped])
 AC_SUBST([PAXCTL_notdumped])
 
+# Makeinfo on macOS is ancient, check whether there is a more recent
+# version installed by Homebrew.
+if test "${opsys}" = darwin && test -z ${MAKEINFO} && \
+   test -d "/usr/local/opt/texinfo/bin"; then
+  MAKEINFO=/usr/local/opt/texinfo/bin/makeinfo
+fi
+
 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
 if test "${MAKEINFO:=makeinfo}" != "no"; then
   case `($MAKEINFO --version) 2>/dev/null` in
-- 
2.14.3