| # Process this file with autoconf to produce a configure script. |
| # Copyright (C) 1995, 1997, 1998, 2001, 2002 Free Software Foundation, Inc. |
| # Contributed by Dave Love (d.love@dl.ac.uk). |
| # |
| #This file is part of GNU Fortran. |
| # |
| #GNU Fortran is free software; you can redistribute it and/or modify |
| #it under the terms of the GNU General Public License as published by |
| #the Free Software Foundation; either version 2, or (at your option) |
| #any later version. |
| # |
| #GNU Fortran is distributed in the hope that it will be useful, |
| #but WITHOUT ANY WARRANTY; without even the implied warranty of |
| #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| #GNU General Public License for more details. |
| # |
| #You should have received a copy of the GNU General Public License |
| #along with GNU Fortran; see the file COPYING. If not, write to |
| #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| #02111-1307, USA. |
| |
| AC_PREREQ(2.13) |
| AC_INIT(ftell_.c) |
| AC_CONFIG_HEADER(config.h) |
| |
| dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may |
| dnl not be able to. |
| define([AC_PROG_CC_WORKS],[]) |
| |
| # For g77 we'll set CC to point at the built gcc, but this will get it into |
| # the makefiles |
| AC_PROG_CC |
| |
| # These defines are necessary to get 64-bit file size support. |
| # NetBSD 1.4 header files does not support XOPEN_SOURCE == 600, but it |
| # handles 64-bit file sizes without needing these defines. |
| AC_MSG_CHECKING(whether _XOPEN_SOURCE may be defined) |
| AC_TRY_COMPILE([#define _XOPEN_SOURCE 600L |
| #include <unistd.h>],, |
| may_use_xopen_source=yes, |
| may_use_xopen_source=no) |
| AC_MSG_RESULT($may_use_xopen_source) |
| if test $may_use_xopen_source = yes; then |
| AC_DEFINE(_XOPEN_SOURCE, 600L, [Get Single Unix Specification semantics]) |
| # The following is needed by irix6.2 so that struct timeval is declared. |
| AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1, [Get Single Unix Specification semantics]) |
| # The following is needed by Solaris2.5.1 so that struct timeval is declared. |
| AC_DEFINE(__EXTENSIONS__, 1, [Solaris extensions]) |
| AC_DEFINE(_FILE_OFFSET_BITS, 64, [Get 64-bit file size support]) |
| AC_DEFINE(_LARGEFILE_SOURCE, 1, [Define for HP-UX ftello and fseeko extension.]) |
| fi |
| |
| dnl Checks for programs. |
| |
| LIBTOOL='$(SHELL) ../libtool' |
| AC_SUBST(LIBTOOL) |
| |
| test "$AR" || AR=ar |
| AC_SUBST(AR) |
| AC_PROG_MAKE_SET |
| |
| dnl Checks for libraries. |
| |
| dnl Checks for header files. |
| # Sanity check for the cross-compilation case: |
| AC_CHECK_HEADER(stdio.h,:, |
| [AC_MSG_ERROR([Can't find stdio.h. |
| You must have a usable C system for the target already installed, at least |
| including headers and, preferably, the library, before you can configure |
| the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c', |
| then the target library, then build with \`LANGUAGES=f77'.])]) |
| |
| AC_HEADER_STDC |
| AC_MSG_CHECKING(for posix) |
| AC_CACHE_VAL(g77_cv_header_posix, |
| AC_EGREP_CPP(yes, |
| [#include <sys/types.h> |
| #include <unistd.h> |
| #ifdef _POSIX_VERSION |
| yes |
| #endif |
| ], |
| g77_cv_header_posix=yes, |
| g77_cv_header_posix=no)) |
| AC_MSG_RESULT($g77_cv_header_posix) |
| |
| # We can rely on the GNU library being posix-ish. I guess checking the |
| # header isn't actually like checking the functions, though... |
| AC_MSG_CHECKING(for GNU library) |
| AC_CACHE_VAL(g77_cv_lib_gnu, |
| AC_EGREP_CPP(yes, |
| [#include <stdio.h> |
| #ifdef __GNU_LIBRARY__ |
| yes |
| #endif |
| ], |
| g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no)) |
| AC_MSG_RESULT($g77_cv_lib_gnu) |
| |
| # Apparently cygwin needs to be special-cased. |
| AC_MSG_CHECKING([for cyg\`win'32]) |
| AC_CACHE_VAL(g77_cv_sys_cygwin32, |
| AC_EGREP_CPP(yes, |
| [#ifdef __CYGWIN32__ |
| yes |
| #endif |
| ], |
| g77_cv_sys_cygwin32=yes, |
| g77_cv_sys_cygwin32=no)) |
| AC_MSG_RESULT($g77_cv_sys_cygwin32) |
| |
| # ditto for mingw32. |
| AC_MSG_CHECKING([for mingw32]) |
| AC_CACHE_VAL(g77_cv_sys_mingw32, |
| AC_EGREP_CPP(yes, |
| [#ifdef __MINGW32__ |
| yes |
| #endif |
| ], |
| g77_cv_sys_mingw32=yes, |
| g77_cv_sys_mingw32=no)) |
| AC_MSG_RESULT($g77_cv_sys_mingw32) |
| |
| |
| dnl Checks for typedefs, structures, and compiler characteristics. |
| AC_C_CONST |
| AC_TYPE_SIZE_T |
| |
| dnl Checks for library functions. |
| |
| # This should always succeed on unix. |
| # Apparently positive result on cygwin loses re. NON_UNIX_STDIO |
| # (as of cygwin b18). Likewise on mingw. |
| AC_CHECK_FUNC(fstat) |
| AC_MSG_CHECKING([need for NON_UNIX_STDIO]) |
| if test $g77_cv_sys_cygwin32 = yes \ |
| || test $g77_cv_sys_mingw32 = yes \ |
| || test $ac_cv_func_fstat = no; then |
| AC_MSG_RESULT(yes) |
| AC_DEFINE(NON_UNIX_STDIO, 1, [Define if we do not have Unix Stdio.]) |
| else |
| AC_MSG_RESULT(no) |
| fi |
| |
| AC_CHECK_FUNCS(fseeko) |
| AC_CHECK_FUNCS(ftello) |
| AC_CHECK_FUNCS(ftruncate) |
| AC_CHECK_FUNCS(mkstemp) |
| AC_CHECK_FUNCS(tempnam) |
| AC_CHECK_FUNCS(tmpnam) |
| |
| # posix will guarantee the right behaviour for sprintf, else we can't be |
| # sure; HEADER_STDC wouldn't be the right check in sunos4, for instance. |
| # However, on my sunos4/gcc setup unistd.h leads us wrongly to believe |
| # we're posix-conformant, so always do the test. |
| AC_MSG_CHECKING(for ansi/posix sprintf result) |
| dnl This loses if included as an argument to AC_CACHE_VAL because the |
| dnl changequote doesn't take effect and the [] vanish. |
| dnl fixme: use cached value |
| AC_TRY_RUN(changequote(<<, >>)dnl |
| <<#include <stdio.h> |
| /* does sprintf return the number of chars transferred? */ |
| main () {char foo[2]; (sprintf(foo, "1") == 1) ? exit(0) : exit(1);} |
| >>changequote([, ]), |
| g77_cv_sys_sprintf_ansi=yes, |
| g77_cv_sys_sprintf_ansi=no, |
| g77_cv_sys_sprintf_ansi=no) |
| AC_CACHE_VAL(g77_cv_sys_sprintf_ansi, |
| g77_cv_sys_sprintf_ansi=$g77_cv_sys_sprintf_ansi) |
| dnl We get a misleading `(cached)' message... |
| AC_MSG_RESULT($g77_cv_sys_sprintf_ansi) |
| |
| # The cygwin patch takes steps to avoid defining USE_STRLEN here -- I don't |
| # understand why. |
| if test $g77_cv_sys_sprintf_ansi != yes; then |
| AC_DEFINE(USE_STRLEN, 1, [Define if we use strlen.]) |
| fi |
| |
| # define NON_ANSI_RW_MODES on unix (can't hurt) |
| AC_MSG_CHECKING(NON_ANSI_RW_MODES) |
| AC_EGREP_CPP(yes, |
| [#ifdef unix |
| yes |
| #endif |
| #ifdef __unix |
| yes |
| #endif |
| #ifdef __unix__ |
| yes |
| #endif |
| ], is_unix=yes, is_unix=no) |
| # NON_ANSI_RW_MODES shouldn't be necessary on cygwin for binary mounts. |
| if test $g77_cv_sys_cygwin32 = yes || test $g77_cv_sys_mingw32 = yes; then |
| AC_MSG_RESULT(no) |
| else |
| if test $is_unix = yes; then |
| AC_DEFINE(NON_ANSI_RW_MODES, 1, [Define if we have non ANSI RW modes.]) |
| AC_MSG_RESULT(yes) |
| else |
| AC_MSG_RESULT(no) |
| fi |
| fi |
| |
| # This EOF_CHAR is a misfeature on unix. |
| AC_DEFINE(NO_EOF_CHAR_CHECK, 1, [Always defined.]) |
| |
| AC_TYPE_OFF_T |
| |
| AC_DEFINE(Skip_f2c_Undefs, 1, [Define to skip f2c undefs.]) |
| |
| AC_OUTPUT(Makefile) |
| |
| dnl We might have configuration options to: |
| dnl * change unit preconnexion in err.c (f_init.c) |
| dnl * -DALWAYS_FLUSH |
| dnl * -DOMIT_BLANK_CC |
| |
| dnl Local Variables: |
| dnl comment-start: "dnl " |
| dnl comment-end: "" |
| dnl comment-start-skip: "\\bdnl\\b\\s *" |
| dnl End: |