1 dnl Process this file with 'autoconf' to produce a 'configure' script
2 dnl $Id: configure.in,v 1.23 2020/03/10 22:53:47 tom Exp $
3 AC_PREREQ(2.52.20200111)
4 AC_REVISION($Revision: 1.23 $)
6 AC_CONFIG_HEADER(config.h:config_h.in)
8 CF_CHECK_CACHE([AC_CANONICAL_SYSTEM])
21 AC_CHECK_HEADERS(fcntl.h)
24 AC_HAVE_FUNCS(getopt vsnprintf)
26 AC_MSG_CHECKING(for maximum table size)
27 AC_ARG_WITH([max-table-size],
28 [AC_HELP_STRING([--with-max-table-size=N],
29 [set the maximum table size = N (no default)])])
30 if test -n "$with_max_table_size"
32 AC_MSG_RESULT($with_max_table_size)
33 check=`expr "$with_max_table_size" + 0`
34 if test "x$check" != "x$with_max_table_size"
36 AC_MSG_ERROR([invalid value for --with-max-table-size: $with_max_table_size])
38 AC_DEFINE_UNQUOTED(MAXTABLE,$with_max_table_size,[Define to maximum table size (default: 32500)])
40 AC_MSG_RESULT(default)
43 AC_MSG_CHECKING(if backtracking extension is wanted)
44 AC_ARG_ENABLE([btyacc],
45 [AC_HELP_STRING([--enable-btyacc],
46 [turn on support for the btyacc backtracking extension (default: no)])])
47 AC_MSG_RESULT($enable_btyacc)
48 if test "$enable_btyacc" = "yes"; then
49 AC_DEFINE(YYBTYACC,1,[Define to 1 to enable backtracking extension])
56 CF_WITH_WARNINGS(Wwrite-strings)