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configure.ac @ 1882

Last change on this file since 1882 was 449, checked in by fielding@…, 14 years ago
If lex is actually flex (as it is on Mac OS X), then the -l flag is required in order to support yylineo. make uses LFLAGS to set flags for the automatic rule for running lex.
File size: 1.1 KB

Rev	Line
[407]	1	dnl $Id: configure.ac,v 1.1 2008-05-28 12:01:58 jre Exp $
	2	dnl
	3	dnl Boy does modern autoconf make it hard to have a small ./configure.
	4	dnl Sorry that it's so huge for almost no configuration.
	5
	6	AC_INIT(bap, 1.2)
	7
	8	AC_PROG_CC
	9	AC_PROG_YACC
	10
	11	dnl byacc on FreeBSD 4.3 gives weird parsing problems.
	12	dnl byacc on FreeBSD 4.10 seems fine.
	13	if test "$ac_cv_prog_YACC" = "byacc"; then
	14	AC_WARN([using byacc has caused inexplicable runtime behavior;])
	15	AC_WARN([if you get incomprehensible errors when parsing])
	16	AC_WARN([grammars, install bison and try again.])
	17	fi
	18
	19	dnl The bap -d argument only works with bison, so enable it
	20	dnl if we're using bison.
	21	dnl
	22	dnl Unfortunately, the bison internals that my YYERROR_VERBOSE
	23	dnl code tweaks changed in bison 2.1, and I haven't taken the
	24	dnl time to track it down, so skip this test for now.
	25	dnl if test "$ac_cv_prog_YACC" = "bison -y"; then
	26	dnl AC_DEFINE(YYERROR_VERBOSE, 1, [define if we're using bison])
	27	dnl fi
	28
[449]	29	AC_PROG_LEX
	30	if test "$LEX" = "flex"; then
	31	FLEXFLAGS="-l"
	32	fi
	33	AC_SUBST(FLEXFLAGS)
	34
[407]	35	AC_REPLACE_FUNCS(hcreate)
	36
	37	AC_CONFIG_HEADERS(config.h)
	38
	39	AC_OUTPUT(Makefile)

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