From e1cac2217681c18f5795feb6b1ff4719bc4ef37a Mon Sep 17 00:00:00 2001
From: John Cupitt <jcupitt@gmail.com>
Date: Sat, 3 Mar 2018 10:25:15 +0000
Subject: [PATCH] oop missing AC_DEFINE for libjpeg

---
 configure.ac | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 4f45343b..ee0833af 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1006,7 +1006,8 @@ AC_ARG_WITH([jpeg],
 
 if test x"$with_jpeg" != x"no"; then
   PKG_CHECK_MODULES(JPEG, libjpeg,
-    [with_jpeg="yes (pkg-config)"
+    [AC_DEFINE(HAVE_JPEG,1,[define if you have libjpeg installed.])
+     with_jpeg="yes (pkg-config)"
      PACKAGES_USED="$PACKAGES_USED libjpeg"
     ],
     [FIND_JPEG(