From 52401b6b8805c9e13ac1d6c042163823bb822850 Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Mon, 4 Apr 2005 21:56:30 +0000
Subject: [PATCH] make configure work even when no prefix is specified

git-svn-id: svn://svn.oetiker.ch/rrdtool/branches/1.2/program@353 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 configure.ac | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 5cfd7d2..d6ad88a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -309,7 +309,10 @@ AC_MSG_CHECKING(Perl Modules to build)
 AC_MSG_RESULT(${COMP_PERL:-No Perl Modules will be built})
 
 # Options to pass when configuring perl module
-PERL_MAKE_OPTIONS="PREFIX=$prefix LIB=$prefix/lib/perl/$PERL_VERSION"
+ppref=$prefix
+test "x$ppref" = xNONE && ppref=$ac_default_prefix
+
+PERL_MAKE_OPTIONS="PREFIX=$ppref LIB=$ppref/lib/perl/$PERL_VERSION"
 
 dnl pass additional perl options when generating Makefile from Makefile.PL
 AC_ARG_ENABLE(perl-site-install,
-- 
2.11.0