From: Adam Dickmeiss <adam@indexdata.dk>
Date: Thu, 16 Jun 2011 08:00:21 +0000 (+0200)
Subject: Fix test for Boost version / presence
X-Git-Url: http://git.indexdata.com/?p=m4-moved-to-github.git;a=commitdiff_plain;h=4f4f4349139aad0bc00bd62c4ea4ab4239f34af4

Fix test for Boost version / presence

BOOST_GOT_VERSION might be "" on new GCCs.
---

diff --git a/boost.m4 b/boost.m4
index bffcf4a..0540465 100644
--- a/boost.m4
+++ b/boost.m4
@@ -57,7 +57,8 @@ AC_DEFUN([ID_BOOST],
 version_is:BOOST_VERSION
 ]])])
 	    BOOST_GOT_VERSION=`(eval "$ac_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD | $EGREP version_is 2>/dev/null | cut -d ":" -f2`
-	    if test "$BOOST_GOT_VERSION" = "BOOST_VERSION"; then
+	    if test -z "$BOOST_GOT_VERSION" -o \
+		"$BOOST_GOT_VERSION" = "BOOST_VERSION"; then
 		AC_MSG_RESULT([no])
 		AC_MSG_ERROR([Boost development libraries required])
 	    fi