From 4c69ebed44789be056a7b713bed43e5d3b3a5542 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pavel=20Jan=C3=ADk?= <Pavel@Janik.cz>
Date: Sun, 30 Nov 2014 09:56:20 +0100
Subject: [PATCH] Add /opt/local/include/db48 only if it exists.

---
 configure.ac | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 9814197af..c4c21eaf4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -244,8 +244,12 @@ case $host in
        AC_CHECK_PROG([PORT],port, port)
        if test x$PORT = xport; then
          dnl add default macports paths
-         CPPFLAGS="$CPPFLAGS -isystem /opt/local/include -I/opt/local/include/db48"
-         LIBS="$LIBS -L/opt/local/lib -L/opt/local/lib/db48"
+         CPPFLAGS="$CPPFLAGS -isystem /opt/local/include"
+         LIBS="$LIBS -L/opt/local/lib"
+         if test -d /opt/local/include/db48; then
+           CPPFLAGS="$CPPFLAGS -I/opt/local/include/db48"
+           LIBS="$LIBS -L/opt/local/lib/db48"
+         fi
        fi
 
        AC_CHECK_PROG([BREW],brew, brew)