-autoconf --version | egrep '2\.59' > /dev/null
-if test $? -ne 0 ; then
- die "Your autoconf was not detected as being 2.59"
-fi
-aclocal --version | egrep '1\.9\.2' > /dev/null
-if test $? -ne 0 ; then
- die "Your aclocal was not detected as being 1.9.2"
-fi
-autoheader --version | egrep '2\.59' > /dev/null
-if test $? -ne 0 ; then
- die "Your autoheader was not detected as being 2.59"
-fi
-libtool --version | grep '1\.5\.10' > /dev/null
-if test $? -ne 0 ; then
- die "Your libtool was not detected as being 1.5.10"
-fi
+autoconf --version | grep $want_autoconf_version > /dev/null
+test $? -eq 0 || die "Your autoconf was not detected as being $want_autoconf_version_clean"
+aclocal --version | grep '^aclocal.*1\.9\.6' > /dev/null
+test $? -eq 0 || die "Your aclocal was not detected as being 1.9.6"
+autoheader --version | grep '^autoheader.*'$want_autoheader_version > /dev/null
+test $? -eq 0 || die "Your autoheader was not detected as being $want_autoheader_version_clean"
+libtool --version | grep '1\.5\.22' > /dev/null
+test $? -eq 0 || die "Your libtool was not detected as being 1.5.22"