From 67318a2f5bf9699b58e37c392779d2d88fb6d069 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Tue, 4 Oct 2011 13:31:05 +0000
Subject: [PATCH] configure: Preserve the user's $CPPFLAGS and $LDFLAGS.

---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index a82855a5..b7de03f7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -41,8 +41,8 @@ AC_SUBST(nix)
 old_CPPFLAGS="$CPPFLAGS"
 old_LIBS="$LIBS"
 
-CPPFLAGS="-I$nix/include/nix"
-LDFLAGS="-L$nix/lib/nix"
+CPPFLAGS="$CPPFLAGS -I$nix/include/nix"
+LDFLAGS="$LDFLAGS -L$nix/lib/nix"
 
 AC_CHECK_HEADER([store-api.hh], [:],
   [AC_MSG_ERROR([Nix headers not found; please install Nix or check the `--with-nix' option.])])