build-sys: enhance error message for missing libtoolize

The commit will will use `You must have libtool version...' message
when libtoolize is missing.  Earlier the error message less helpful.

./autogen.sh: line 59: test: =: unary operator expected

Signed-off-by: Sami Kerola <kerolasa@iki.fi>

diff --git a/autogen.sh b/autogen.sh
index c07984bcf1960c4a36971544984f49e52aba6642..14a795ffdb66e0bd9a6c543f99e5f2a3cebc3cc5 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -55,6 +55,7 @@ test -f mount/mount.c || {
 }
 
 ltver=$(libtoolize --version | awk '/^libtoolize/ { print $4 }')
+ltver=${ltver:-"none"}
 test ${ltver##2.} = "$ltver" && {
        echo "You must have libtool version >= 2.x.x, but you have $ltver."
        DIE=1