diff -r 5cdee8207025 -r 48580778851e configure.ac
--- a/configure.ac	Sat Dec 16 17:43:17 2006 +0000
+++ b/configure.ac	Thu Dec 28 15:31:39 2006 +0000
@@ -29,7 +29,7 @@
 AC_ARG_WITH([lemon-prefix],
 AS_HELP_STRING([--with-lemon-prefix@<:@=PREFIX@:>@], [search for LEMON under PREFIX]), [], [with_lemon_prefix=no])
 if test x"$with_lemon_prefix" != x"no"; then
-  PKG_CONFIG_PATH="$with_lemon_prefix/lib/pkgconfig/:$PKG_CONFIG_PATH"
+  export PKG_CONFIG_PATH="$with_lemon_prefix/lib/pkgconfig/:$PKG_CONFIG_PATH"
 fi
 
 PKG_CHECK_MODULES([LEMON_0_5], [lemon >= 0.5],