From 82fc3d9d5bc2ca49cd4cac8150f89877a44fd4b1 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Tue, 2 May 2017 23:49:06 +0200
Subject: [PATCH] bpo-30232: Support Git worktree in configure.ac

Don't test if .git/HEAD file exists, but only if the .git file (or
directory) exists.
---
 configure    | 2 +-
 configure.ac | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 7d1f4ade7e2bb8..8c917351247121 100755
--- a/configure
+++ b/configure
@@ -5691,7 +5691,7 @@ fi
 
 
 
-if test -e $srcdir/.git/HEAD
+if test -e $srcdir/.git
 then
 # Extract the first word of "git", so it can be a program name with args.
 set dummy git; ac_word=$2
diff --git a/configure.ac b/configure.ac
index e620b088ca4230..aa74259ef58c8e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -983,7 +983,7 @@ AC_SUBST(GITVERSION)
 AC_SUBST(GITTAG)
 AC_SUBST(GITBRANCH)
 
-if test -e $srcdir/.git/HEAD
+if test -e $srcdir/.git
 then
 AC_CHECK_PROG(HAS_GIT, git, found, not-found)
 else