configure.ac: Fix publican version check

This sure is ugly - we feed output of publican -v into bc to compare
against minimum required version, 2.8.  That's bad enough, but when
publican suddenly report 3.0.0, bc starts complaining...

Use sed to filter out 3.0 from the 'version=3.0.0' output from publican
instead.  Seem a little more robust, but it's just a matter of time before
something else breaks this flaky setup.

Hey, publican, how about shipping .pc files?

diff --git a/configure.ac b/configure.ac
index db0855e..4271c7a 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -101,7 +101,7 @@ if test "x$enable_documentation" = "xyes"; then
        AC_PATH_PROG(PUBLICAN, publican)
 
        if test "x$PUBLICAN" != "x"; then
-               PUBLICAN_VERSION=`$PUBLICAN -v | cut -d'=' -f2`
+               PUBLICAN_VERSION=[`$PUBLICAN -v | sed -e 's/version=\([0-9]*\.[0-9]*\).*/\1/'`]
 
                if test [ 1 -eq `echo "${PUBLICAN_VERSION} < 2.8" | bc` ]; then
                        AC_MSG_ERROR([Publican version is not supported. Install publican >= 2.8 or disable the documentation using --disable-documentation])