[14547] | 1 | # Process this file with autoconf to produce a configure script. |
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[18473] | 2 | # Copyright (C) 1995, 1997, 1998, 2001, 2002 Free Software Foundation, Inc. |
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[14547] | 3 | # Contributed by Dave Love (d.love@dl.ac.uk). |
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| 4 | # |
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| 5 | #This file is part of GNU Fortran. |
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| 6 | # |
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| 7 | #GNU Fortran is free software; you can redistribute it and/or modify |
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| 8 | #it under the terms of the GNU General Public License as published by |
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| 9 | #the Free Software Foundation; either version 2, or (at your option) |
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| 10 | #any later version. |
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| 11 | # |
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| 12 | #GNU Fortran is distributed in the hope that it will be useful, |
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| 13 | #but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | #GNU General Public License for more details. |
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| 16 | # |
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| 17 | #You should have received a copy of the GNU General Public License |
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| 18 | #along with GNU Fortran; see the file COPYING. If not, write to |
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| 19 | #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
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| 20 | #02111-1307, USA. |
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| 21 | |
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| 22 | AC_PREREQ(2.12.1) |
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| 23 | AC_INIT(ftell_.c) |
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[16959] | 24 | AC_CONFIG_HEADER(config.h) |
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[14547] | 25 | |
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[16959] | 26 | dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may |
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| 27 | dnl not be able to. |
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| 28 | define([AC_PROG_CC_WORKS],[]) |
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| 29 | |
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[14547] | 30 | # For g77 we'll set CC to point at the built gcc, but this will get it into |
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| 31 | # the makefiles |
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| 32 | AC_PROG_CC |
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| 33 | |
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[20088] | 34 | # These defines are necessary to get 64-bit file size support. |
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| 35 | # NetBSD 1.4 header files does not support XOPEN_SOURCE == 600, but it |
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| 36 | # handles 64-bit file sizes without needing these defines. |
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| 37 | AC_MSG_CHECKING(whether _XOPEN_SOURCE may be defined) |
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| 38 | AC_TRY_COMPILE([#define _XOPEN_SOURCE 600L |
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| 39 | #include <unistd.h>],, |
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| 40 | may_use_xopen_source=yes, |
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| 41 | may_use_xopen_source=no) |
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| 42 | AC_MSG_RESULT($may_use_xopen_source) |
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| 43 | if test $may_use_xopen_source = yes; then |
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| 44 | AC_DEFINE(_XOPEN_SOURCE, 600L, [Get Single Unix Specification semantics]) |
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| 45 | # The following is needed by irix6.2 so that struct timeval is declared. |
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| 46 | AC_DEFINE(_XOPEN_SOURCE_EXTENDED, 1, [Get Single Unix Specification semantics]) |
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| 47 | # The following is needed by Solaris2.5.1 so that struct timeval is declared. |
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| 48 | AC_DEFINE(__EXTENSIONS__, 1, [Solaris extensions]) |
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| 49 | AC_DEFINE(_FILE_OFFSET_BITS, 64, [Get 64-bit file size support]) |
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| 50 | AC_DEFINE(_LARGEFILE_SOURCE, 1, [Define for HP-UX ftello and fseeko extension.]) |
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| 51 | fi |
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| 52 | |
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| 53 | dnl Checks for programs. |
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| 54 | |
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[18473] | 55 | LIBTOOL='$(SHELL) ../libtool' |
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| 56 | AC_SUBST(LIBTOOL) |
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| 57 | |
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[14547] | 58 | test "$AR" || AR=ar |
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| 59 | AC_SUBST(AR) |
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| 60 | AC_PROG_MAKE_SET |
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| 61 | |
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| 62 | dnl Checks for libraries. |
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| 63 | |
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| 64 | dnl Checks for header files. |
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| 65 | # Sanity check for the cross-compilation case: |
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| 66 | AC_CHECK_HEADER(stdio.h,:, |
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| 67 | [AC_MSG_ERROR([Can't find stdio.h. |
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| 68 | You must have a usable C system for the target already installed, at least |
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| 69 | including headers and, preferably, the library, before you can configure |
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| 70 | the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c', |
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| 71 | then the target library, then build with \`LANGUAGES=f77'.])]) |
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| 72 | |
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| 73 | AC_HEADER_STDC |
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| 74 | AC_MSG_CHECKING(for posix) |
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| 75 | AC_CACHE_VAL(g77_cv_header_posix, |
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| 76 | AC_EGREP_CPP(yes, |
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| 77 | [#include <sys/types.h> |
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| 78 | #include <unistd.h> |
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| 79 | #ifdef _POSIX_VERSION |
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| 80 | yes |
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| 81 | #endif |
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| 82 | ], |
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| 83 | g77_cv_header_posix=yes, |
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| 84 | g77_cv_header_posix=no)) |
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| 85 | AC_MSG_RESULT($g77_cv_header_posix) |
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| 86 | |
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| 87 | # We can rely on the GNU library being posix-ish. I guess checking the |
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| 88 | # header isn't actually like checking the functions, though... |
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| 89 | AC_MSG_CHECKING(for GNU library) |
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| 90 | AC_CACHE_VAL(g77_cv_lib_gnu, |
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| 91 | AC_EGREP_CPP(yes, |
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| 92 | [#include <stdio.h> |
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| 93 | #ifdef __GNU_LIBRARY__ |
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| 94 | yes |
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| 95 | #endif |
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| 96 | ], |
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| 97 | g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no)) |
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| 98 | AC_MSG_RESULT($g77_cv_lib_gnu) |
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| 99 | |
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| 100 | # Apparently cygwin needs to be special-cased. |
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| 101 | AC_MSG_CHECKING([for cyg\`win'32]) |
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| 102 | AC_CACHE_VAL(g77_cv_sys_cygwin32, |
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| 103 | AC_EGREP_CPP(yes, |
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| 104 | [#ifdef __CYGWIN32__ |
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| 105 | yes |
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| 106 | #endif |
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| 107 | ], |
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| 108 | g77_cv_sys_cygwin32=yes, |
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| 109 | g77_cv_sys_cygwin32=no)) |
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| 110 | AC_MSG_RESULT($g77_cv_sys_cygwin32) |
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| 111 | |
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| 112 | # ditto for mingw32. |
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| 113 | AC_MSG_CHECKING([for mingw32]) |
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| 114 | AC_CACHE_VAL(g77_cv_sys_mingw32, |
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| 115 | AC_EGREP_CPP(yes, |
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| 116 | [#ifdef __MINGW32__ |
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| 117 | yes |
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| 118 | #endif |
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| 119 | ], |
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| 120 | g77_cv_sys_mingw32=yes, |
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| 121 | g77_cv_sys_mingw32=no)) |
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| 122 | AC_MSG_RESULT($g77_cv_sys_mingw32) |
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| 123 | |
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| 124 | |
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| 125 | dnl Checks for typedefs, structures, and compiler characteristics. |
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| 126 | AC_C_CONST |
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| 127 | AC_TYPE_SIZE_T |
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| 128 | |
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| 129 | dnl Checks for library functions. |
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| 130 | |
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| 131 | # This should always succeed on unix. |
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| 132 | # Apparently positive result on cygwin loses re. NON_UNIX_STDIO |
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| 133 | # (as of cygwin b18). Likewise on mingw. |
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| 134 | AC_CHECK_FUNC(fstat) |
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| 135 | AC_MSG_CHECKING([need for NON_UNIX_STDIO]) |
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| 136 | if test $g77_cv_sys_cygwin32 = yes \ |
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| 137 | || test $g77_cv_sys_mingw32 = yes \ |
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| 138 | || test $ac_cv_func_fstat = no; then |
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| 139 | AC_MSG_RESULT(yes) |
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[16959] | 140 | AC_DEFINE(NON_UNIX_STDIO, 1, [Define if we do not have Unix Stdio.]) |
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[14547] | 141 | else |
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| 142 | AC_MSG_RESULT(no) |
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| 143 | fi |
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| 144 | |
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[18473] | 145 | AC_CHECK_FUNCS(fseeko) |
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| 146 | AC_CHECK_FUNCS(ftello) |
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[16959] | 147 | AC_CHECK_FUNCS(ftruncate) |
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| 148 | AC_CHECK_FUNCS(mkstemp) |
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[14547] | 149 | AC_CHECK_FUNCS(tempnam) |
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[18473] | 150 | AC_CHECK_FUNCS(tmpnam) |
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[14547] | 151 | |
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| 152 | # posix will guarantee the right behaviour for sprintf, else we can't be |
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| 153 | # sure; HEADER_STDC wouldn't be the right check in sunos4, for instance. |
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| 154 | # However, on my sunos4/gcc setup unistd.h leads us wrongly to believe |
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| 155 | # we're posix-conformant, so always do the test. |
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| 156 | AC_MSG_CHECKING(for ansi/posix sprintf result) |
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| 157 | dnl This loses if included as an argument to AC_CACHE_VAL because the |
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| 158 | dnl changequote doesn't take effect and the [] vanish. |
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| 159 | dnl fixme: use cached value |
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| 160 | AC_TRY_RUN(changequote(<<, >>)dnl |
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| 161 | <<#include <stdio.h> |
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| 162 | /* does sprintf return the number of chars transferred? */ |
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| 163 | main () {char foo[2]; (sprintf(foo, "1") == 1) ? exit(0) : exit(1);} |
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| 164 | >>changequote([, ]), |
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| 165 | g77_cv_sys_sprintf_ansi=yes, |
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| 166 | g77_cv_sys_sprintf_ansi=no, |
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| 167 | g77_cv_sys_sprintf_ansi=no) |
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| 168 | AC_CACHE_VAL(g77_cv_sys_sprintf_ansi, |
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| 169 | g77_cv_sys_sprintf_ansi=$g77_cv_sys_sprintf_ansi) |
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| 170 | dnl We get a misleading `(cached)' message... |
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| 171 | AC_MSG_RESULT($g77_cv_sys_sprintf_ansi) |
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| 172 | |
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| 173 | # The cygwin patch takes steps to avoid defining USE_STRLEN here -- I don't |
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| 174 | # understand why. |
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| 175 | if test $g77_cv_sys_sprintf_ansi != yes; then |
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[16959] | 176 | AC_DEFINE(USE_STRLEN, 1, [Define if we use strlen.]) |
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[14547] | 177 | fi |
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| 178 | |
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| 179 | # define NON_ANSI_RW_MODES on unix (can't hurt) |
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| 180 | AC_MSG_CHECKING(NON_ANSI_RW_MODES) |
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| 181 | AC_EGREP_CPP(yes, |
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| 182 | [#ifdef unix |
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| 183 | yes |
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| 184 | #endif |
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| 185 | #ifdef __unix |
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| 186 | yes |
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| 187 | #endif |
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| 188 | #ifdef __unix__ |
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| 189 | yes |
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| 190 | #endif |
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| 191 | ], is_unix=yes, is_unix=no) |
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| 192 | # NON_ANSI_RW_MODES shouldn't be necessary on cygwin for binary mounts. |
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| 193 | if test $g77_cv_sys_cygwin32 = yes || test $g77_cv_sys_mingw32 = yes; then |
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| 194 | AC_MSG_RESULT(no) |
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| 195 | else |
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| 196 | if test $is_unix = yes; then |
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[16959] | 197 | AC_DEFINE(NON_ANSI_RW_MODES, 1, [Define if we have non ANSI RW modes.]) |
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[14547] | 198 | AC_MSG_RESULT(yes) |
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| 199 | else |
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| 200 | AC_MSG_RESULT(no) |
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| 201 | fi |
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| 202 | fi |
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| 203 | |
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| 204 | # This EOF_CHAR is a misfeature on unix. |
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[16959] | 205 | AC_DEFINE(NO_EOF_CHAR_CHECK, 1, [Always defined.]) |
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[14547] | 206 | |
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[16959] | 207 | AC_TYPE_OFF_T |
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[14547] | 208 | |
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[16959] | 209 | AC_DEFINE(Skip_f2c_Undefs, 1, [Define to skip f2c undefs.]) |
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| 210 | |
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[14547] | 211 | AC_OUTPUT(Makefile) |
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| 212 | |
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| 213 | dnl We might have configuration options to: |
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| 214 | dnl * change unit preconnexion in err.c (f_init.c) |
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| 215 | dnl * -DALWAYS_FLUSH |
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| 216 | dnl * -DOMIT_BLANK_CC |
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| 217 | |
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| 218 | dnl Local Variables: |
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| 219 | dnl comment-start: "dnl " |
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| 220 | dnl comment-end: "" |
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| 221 | dnl comment-start-skip: "\\bdnl\\b\\s *" |
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| 222 | dnl End: |
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