From 71879a53b3ab3b8b7cb237e917c85943b9ded36d Mon Sep 17 00:00:00 2001
From: Taylor R Campbell <campbell@mumble.net>
Date: Mon, 27 May 2013 21:44:26 +0000
Subject: [PATCH] Don't add empty arguments to -I and -L if pg_config fails.

---
 src/microcode/configure.ac | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/microcode/configure.ac b/src/microcode/configure.ac
index 5b966151a..86d2f632c 100644
--- a/src/microcode/configure.ac
+++ b/src/microcode/configure.ac
@@ -779,11 +779,15 @@ if test "${with_libpq}" != no; then
 	    libpq_lib=/usr/lib
 	fi
     fi
-    if test "${libpq_inc}" != /usr/include; then
-	CPPFLAGS="${CPPFLAGS} -I${libpq_inc}"
+    if test "x${libpq_inc}" != x; then
+	if test "${libpq_inc}" != /usr/include; then
+	    CPPFLAGS="${CPPFLAGS} -I${libpq_inc}"
+	fi
     fi
-    if test "${libpq_lib}" != /usr/lib; then
-	LDFLAGS="${LDFLAGS} -L${libpq_lib}"
+    if test "x${libpq_lib}" != x; then
+	if test "${libpq_lib}" != /usr/lib; then
+	    LDFLAGS="${LDFLAGS} -L${libpq_lib}"
+	fi
     fi
     AC_CHECK_HEADER([libpq-fe.h],
 	[
-- 
2.25.1