From 3aa4c82fde286b1c9d4be9670c4a92f81c369789 Mon Sep 17 00:00:00 2001
From: Tomek Mrugalski <tomasz@isc.org>
Date: Thu, 15 Aug 2019 21:36:15 +0200
Subject: [PATCH] [#625,!485] Fixed detection of log4plus in non-standard
 location

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

diff --git a/configure.ac b/configure.ac
index aff9787ab7..8a7f05ae27 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1034,6 +1034,8 @@ LIBS=$LIBS_SAVED
 # would allow explicit initialization. Newer versions (2.0.4 for sure, possibly
 # older as well) have it and it's recommended to use it. We detect whether
 # it's present or not and do explicit initalization if possible.
+CPPFLAGS_SAVED=$CPPFLAGS
+CPPFLAGS="$LOG4CPLUS_INCLUDES $CPPFLAGS"
 LIBS_SAVED="$LIBS"
 LIBS="$LOG4CPLUS_LIBS $LIBS"
 AC_MSG_CHECKING([log4cplus explicit initialization (log4cplus/initializer.h)])
@@ -1045,6 +1047,7 @@ AC_LINK_IFELSE(
          AC_DEFINE(LOG4CPLUS_INITIALIZER_H, [1], [Explicit initialization of log4cplus possible])],
         [AC_MSG_RESULT(no)])
 LIBS="$LIBS_SAVED"
+CPPFLAGS=$CPPFLAGS_SAVED
 
 #
 # Configure Boost header path
-- 
2.47.2