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dnl
dnl aclocal.m4 --- autoconf input file for gawk
dnl
dnl Copyright (C) 1995, 1996, 1998, 1999, 2000 the Free Software Foundation, Inc.
dnl
dnl This file is part of GAWK, the GNU implementation of the
dnl AWK Progamming 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 gawk-specific macros for autoconf. one day hopefully part of autoconf
AC_DEFUN(GAWK_AC_C_STRINGIZE, [
AC_REQUIRE([AC_PROG_CPP])
AC_MSG_CHECKING([for ANSI stringizing capability])
AC_CACHE_VAL(gawk_cv_c_stringize,
AC_EGREP_CPP([#teststring],[
#define x(y) #y
char *s = x(teststring);
], gawk_cv_c_stringize=no, gawk_cv_c_stringize=yes))
if test "${gawk_cv_c_stringize}" = yes
then
AC_DEFINE(HAVE_STRINGIZE)
fi
AC_MSG_RESULT([${gawk_cv_c_stringize}])
])dnl
dnl By default, many hosts won't let programs access large files;
dnl one must use special compiler options to get large-file access to work.
dnl For more details about this brain damage please see:
dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html
dnl Written by Paul Eggert <eggert@twinsun.com>.
dnl Internal subroutine of GAWK_AC_SYS_LARGEFILE.
dnl GAWK_AC_SYS_LARGEFILE_TEST_INCLUDES
AC_DEFUN(GAWK_AC_SYS_LARGEFILE_TEST_INCLUDES,
[[#include <sys/types.h>
int a[(off_t) 9223372036854775807 == 9223372036854775807 ? 1 : -1];
]])
dnl Internal subroutine of GAWK_AC_SYS_LARGEFILE.
dnl GAWK_AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE, CACHE-VAR, COMMENT, INCLUDES, FUNCTION-BODY)
AC_DEFUN(GAWK_AC_SYS_LARGEFILE_MACRO_VALUE,
[AC_CACHE_CHECK([for $1 value needed for large files], $3,
[$3=no
AC_TRY_COMPILE(GAWK_AC_SYS_LARGEFILE_TEST_INCLUDES
$5
,
[$6],
,
[AC_TRY_COMPILE([#define $1 $2]
GAWK_AC_SYS_LARGEFILE_TEST_INCLUDES
$5
,
[$6],
[$3=$2])])])
if test "[$]$3" != no; then
AC_DEFINE_UNQUOTED([$1], [$]$3, [$4])
fi])
AC_DEFUN(GAWK_AC_SYS_LARGEFILE,
[AC_ARG_ENABLE(largefile,
[ --disable-largefile omit support for large files])
if test "$enable_largefile" != no; then
AC_CACHE_CHECK([for special C compiler options needed for large files],
gawk_cv_sys_largefile_CC,
[gawk_cv_sys_largefile_CC=no
if test "$GCC" != yes; then
# IRIX 6.2 and later do not support large files by default,
# so use the C compiler's -n32 option if that helps.
AC_TRY_COMPILE(GAWK_AC_SYS_LARGEFILE_TEST_INCLUDES, , ,
[ac_save_CC="$CC"
CC="$CC -n32"
AC_TRY_COMPILE(GAWK_AC_SYS_LARGEFILE_TEST_INCLUDES, ,
gawk_cv_sys_largefile_CC=' -n32')
CC="$ac_save_CC"])
fi])
if test "$gawk_cv_sys_largefile_CC" != no; then
CC="$CC$gawk_cv_sys_largefile_CC"
fi
GAWK_AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64,
gawk_cv_sys_file_offset_bits,
[Number of bits in a file offset, on hosts where this is settable.])
GAWK_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGEFILE_SOURCE, 1,
gawk_cv_sys_largefile_source,
[Define to make ftello visible on some hosts (e.g. HP-UX 10.20).],
[#include <stdio.h>], [return !ftello;])
GAWK_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1,
gawk_cv_sys_large_files,
[Define for large files, on AIX-style hosts.])
GAWK_AC_SYS_LARGEFILE_MACRO_VALUE(_XOPEN_SOURCE, 500,
gawk_cv_sys_xopen_source,
[Define to make ftello visible on some hosts (e.g. glibc 2.1.3).],
[#include <stdio.h>], [return !ftello;])
fi
])
dnl Check for AIX and add _XOPEN_SOURCE_EXTENDED
AC_DEFUN(GAWK_AC_AIX_TWEAK, [
AC_MSG_CHECKING([for AIX compilation hacks])
AC_CACHE_VAL(gawk_cv_aix_hack, [
if test -d /lpp/bos
then
CFLAGS="$CFLAGS -D_XOPEN_SOURCE_EXTENDED=1"
gawk_cv_aix_hack=yes
else
gawk_cv_aix_hack=no
fi
])dnl
AC_MSG_RESULT([${gawk_cv_aix_hack}])
])dnl
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