-dnl Copyright © 2011-2013, 2020 Nick Bowler
+dnl Copyright © 2011-2013, 2020-2021 Nick Bowler
dnl
dnl License WTFPL2: Do What The Fuck You Want To Public License, version 2.
dnl This is free software: you are free to do what the fuck you want to.
AM_GNU_GETTEXT([external])
DX_LINGUAS
-AC_ARG_VAR([FLEX], [Command to invoke flex. Defaults to flex.])
-AC_ARG_VAR([FLEXFLAGS], [Additional options to pass to flex.])
-AC_CHECK_PROGS([FLEX], [flex], [flex])
-
-AC_ARG_VAR([BISON], [Command to invoke GNU Bison. Defaults to bison.])
-AC_ARG_VAR([BISONFLAGS], [Additional options to pass to Bison.])
-AC_CHECK_PROGS([BISON], [bison], [bison])
+DX_PROG_FLEX([], [], [FLEX=false])
+DX_PROG_BISON([], [], [BISON=false])
+DX_BISON_COMPAT
BISON_I18N
+BISON_COMPAT=
+AS_IF([test x"$dx_cv_bison_api_header_include" = x"yes"],
+ [BISON_COMPAT="'--define=api.header.include={\"\$(*F).h\"}'"])
+AS_IF([test x"$dx_cv_bison_warn_no_deprecated" = x"yes"],
+ [AS_VAR_APPEND([BISON_COMPAT], ["${BISON_COMPAT:+ }-Wno-deprecated"])])
+AC_SUBST([BISON_COMPAT])
+
AH_TOP([#include <conf_pre.h>])
AH_BOTTOM([#include <conf_post.h>])
[DX_CHECK_GSL([1.0], [have_gsl=yes], [have_gsl=no])])
AM_CONDITIONAL([HAVE_GSL], [test x"$have_gsl" = x"yes"])
-AC_CONFIG_TESTDIR([.])
+AC_CONFIG_TESTDIR([.], [test:.])
DX_PROG_AUTOTEST
AM_CONDITIONAL([HAVE_AUTOTEST], [test x"$dx_cv_autotest_works" = x"yes"])