File: configure.in

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dnl
dnl configure.in --- autoconf input file for gawk
dnl
dnl Copyright (C) 1995-2001 the Free Software Foundation, Inc.
dnl
dnl This file is part of GAWK, the GNU implementation of the
dnl AWK Programming Language.
dnl
dnl GAWK is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl GAWK is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
dnl

dnl Process this file with autoconf to produce a configure script.

AC_INIT(awk.h)
AC_PREREQ(2.13)
AM_INIT_AUTOMAKE(gawk, 3.1.0)
AM_CONFIG_HEADER(config.h:configh.in)

dnl Additional argument stuff
AC_ARG_ENABLE(portals, [  --enable-portals	Enable /p as path prefix for portals], AC_DEFINE(HAVE_PORTALS))

dnl checks for programs
AC_PROG_YACC
AC_PROG_LN_S
AC_PROG_CC
AC_PROG_CPP
AC_PROG_RANLIB

# This is a hack. Different versions of install on different systems
# are just too different. Chuck it and use install-sh.
#
# If the user supplies $INSTALL, figure they know what they're doing.
if test "x$INSTALL" = "x"
then
	INSTALL="$srcdir/install-sh -c"
	export INSTALL
fi

AC_PROG_INSTALL

AC_PROG_MAKE_SET

# This is mainly for my use during testing and development.
# Yes, it's a bit of a hack.
AC_MSG_CHECKING([for special development options])
if test -f $srcdir/.developing
then
	# add other debug flags as appropriate, save GAWKDEBUG for emergencies
	CFLAGS="$CFLAGS -DARRAYDEBUG"
	# turn on compiler warnings if we're doing development
	if test "$GCC" = yes
	then
		CFLAGS="$CFLAGS -Wall"
	fi
	AC_MSG_RESULT([yes])
else
	AC_MSG_RESULT([no])
fi

AC_SUBST(CFLAGS)

dnl checks for systems
AC_AIX
AC_ISC_POSIX
AC_MINIX
AC_SYS_LARGEFILE
GAWK_AC_AIX_TWEAK
GAWK_AC_LINUX_ALPHA

if test "$ISC" = 1	# will be set by test for ISC
then
dnl	need -D_SYSV3 for ISC
	CFLAGS="$CFLAGS -D_SYSV3"
fi

dnl check for C compiler for automake
AM_PROG_CC_STDC
AM_C_PROTOTYPES

ALL_LINGUAS="he"
AM_GNU_GETTEXT

dnl checks for header files
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(fcntl.h limits.h locale.h libintl.h mcheck.h \
	netdb.h netinet/in.h  signum.h stdarg.h string.h \
	sys/param.h sys/socket.h unistd.h)

if test "$ac_cv_header_string_h" = yes
then
	AC_CHECK_HEADERS(memory.h)
else
	AC_CHECK_HEADERS(strings.h)
fi

dnl checks for typedefs
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_SIZE_T
AC_TYPE_GETGROUPS
GAWK_AC_TYPE_SSIZE_T
AC_EGREP_HEADER([int.*sprintf], stdio.h,
	AC_DEFINE(SPRINTF_RET, int),
	AC_DEFINE(SPRINTF_RET, char *))

dnl checks for functions
AC_DEFINE(REGEX_MALLOC)
AC_FUNC_VPRINTF
dnl one day use [ AC_CHECK_TYPE(ssize_t, int) ]
GAWK_AC_FUNC_STRTOD_C89
AC_FUNC_MKTIME
case "$ac_cv_func_working_mktime" in
yes)	AC_DEFINE(HAVE_MKTIME)
	;;
esac

AC_CHECK_LIB(m, fmod)
AC_CHECK_FUNCS(memset memcpy memcmp fmod setlocale strchr strerror \
		 strftime strncasecmp strtod system tzset)

dnl check for dynamic linking
dnl This is known to be very primitive
AC_CHECK_HEADER(dlfcn.h,
	AC_CHECK_LIB(dl, dlopen,
		AC_DEFINE(DYNAMIC)
		LIBS="$LIBS -ldl"
		if test "$GCC" = yes
		then
			# Add others here as appropriate,
			# one day use GNU libtool.
			if uname | egrep -i linux > /dev/null
			then
				LDFLAGS="$LDFLAGS -rdynamic"
			fi
		fi
))

dnl check for how to use getpgrp
dnl have to hardwire it for VMS POSIX. Sigh.
dnl ditto for BeOS.
case `(uname) 2> /dev/null` in
*VMS*|*BeOS*)
	AC_DEFINE(GETPGRP_VOID)
	;;
*)	AC_FUNC_GETPGRP
	;;
esac

dnl check for sockets
GAWK_AC_LIB_SOCKETS

dnl checks for structure members
AC_STRUCT_ST_BLKSIZE
AC_HEADER_TIME
AC_STRUCT_TM
AC_STRUCT_TIMEZONE

dnl checks for compiler characteristics
AC_C_CHAR_UNSIGNED
AC_C_CONST
AC_C_INLINE
AC_C_STRINGIZE

AC_OUTPUT(Makefile \
	awklib/Makefile \
	doc/Makefile \
	intl/Makefile \
	po/Makefile.in \
	test/Makefile)