AC_SUBST([VERSION_FOR_PERL])
])
+dnl Check that Python 2 or 3 is available.
+AC_DEFUN([PSPP_PYTHON],
+ [AC_ARG_VAR([PYTHON], [Python 2 or 3 interpreter])
+ AC_CHECK_PROGS([PYTHON], [python python2 python3], [none])])
+
dnl PSPP_CHECK_CC_OPTION([OPTION], [ACTION-IF-ACCEPTED], [ACTION-IF-REJECTED])
dnl Check whether the given C compiler OPTION is accepted.
dnl If so, execute ACTION-IF-ACCEPTED, otherwise ACTION-IF-REJECTED.
AC_SUBST([AM_MAKEINFOFLAGS])
fi])
+dnl Texinfo 4.13 generates broken DocBook XML. Probably other old
+dnl versions do too, but that's the one that causes problems.
+AC_DEFUN([PSPP_CHECK_MAKEINFO_DOCBOOK_XML],
+ [AC_REQUIRE([AM_INIT_AUTOMAKE]) # Defines MAKEINFO
+ AC_CACHE_CHECK(
+ [whether makeinfo generates broken DocBook XML],
+ [pspp_cv_broken_docbook_xml],
+ [AS_CASE(
+ [$(eval "$MAKEINFO --version | head -1")],
+ [*texinfo*4.13*], [pspp_cv_broken_docbook_xml=yes],
+ [*texinfo*], [pspp_cv_broken_docbook_xml=no],
+ [*], [pspp_cv_broken_docbook_xml=yes])])
+ AM_CONDITIONAL(
+ [BROKEN_DOCBOOK_XML], [test "$pspp_cv_broken_docbook_xml" = yes])])
+
# The following comes from Open vSwitch:
# ----------------------------------------------------------------------
# Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.