dnl Initialize.
AC_PREREQ(2.63)
-AC_INIT([GNU PSPP], [0.8.5], [bug-gnu-pspp@gnu.org], [pspp])
+AC_INIT([GNU PSPP], [0.9.0], [bug-gnu-pspp@gnu.org], [pspp])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_TESTDIR([tests])
PKG_PROG_PKG_CONFIG
m4_pattern_forbid([PKG_CHECK_MODULES])
PSPP_CHECK_CLICKSEQUENCE
+PSPP_CHECK_DOT
PSPP_ENABLE_WERROR
AC_DEFINE([HAVE_CAIRO], 1,
[Define to 1 if Cairo and Pango are available.])],
[PSPP_REQUIRED_PREREQ([cairo 1.5 or later and pango 1.22 or later (or use --without-cairo)])])
- AC_PATH_PROG([XMLLINT], [xmllint], [echo], [$PATH])
- AC_SUBST(XMLLINT)
fi
+dnl Xmllint is used in the rules to build the documentation. It is not actually necessary,
+dnl but is used for post-build consistency checks. Thus, non-developers can live without it.
+dnl However for it to be usefull, it needs to be a certain version and have certain features.
+dnl The macros below check that it the xmllint available is up to scratch. If it isn't
+dnl then a dummy /bin/echo is subsituted instead.
+
+AC_CACHE_CHECK([for an xmllint program which fits our needs],[ac_cv_path_XMLLINT],
+[AC_PATH_PROGS_FEATURE_CHECK([XMLLINT], [xmllint],
+ [[$ac_path_XMLLINT --version 2>&1 | $GREP XPath > /dev/null &&
+ test `$ac_path_XMLLINT --version 2>&1 | $SED 's/^.* \([0-9]*\).*/\1/'` -gt 20900 &&
+ ac_cv_path_XMLLINT=$ac_path_XMLLINT]],
+ [AC_MSG_WARN([no appropriate xmllint program found. Using a dummy (echo)]); ac_cv_path_XMLLINT=$ECHO])])
+
+AC_SUBST([XMLLINT],[$ac_cv_path_XMLLINT])
+
# Support for GUI.
AC_ARG_WITH([gui],
[AS_HELP_STRING([--without-gui],