[14547] | 1 | # Process this file with autoconf to produce a configure script. |
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[16959] | 2 | # Copyright (C) 1995, 1997, 1998, 2001 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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| 26 | dnl Checks for programs. |
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[16959] | 27 | |
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| 28 | dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may |
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| 29 | dnl not be able to. |
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| 30 | define([AC_PROG_CC_WORKS],[]) |
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| 31 | |
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[14547] | 32 | # For g77 we'll set CC to point at the built gcc, but this will get it into |
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| 33 | # the makefiles |
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| 34 | AC_PROG_CC |
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| 35 | |
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| 36 | test "$AR" || AR=ar |
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| 37 | AC_SUBST(AR) |
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| 38 | AC_PROG_MAKE_SET |
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| 39 | |
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| 40 | dnl Checks for libraries. |
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| 41 | |
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| 42 | dnl Checks for header files. |
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| 43 | # Sanity check for the cross-compilation case: |
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| 44 | AC_CHECK_HEADER(stdio.h,:, |
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| 45 | [AC_MSG_ERROR([Can't find stdio.h. |
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| 46 | You must have a usable C system for the target already installed, at least |
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| 47 | including headers and, preferably, the library, before you can configure |
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| 48 | the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c', |
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| 49 | then the target library, then build with \`LANGUAGES=f77'.])]) |
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| 50 | |
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| 51 | AC_HEADER_STDC |
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| 52 | dnl We could do this if we didn't know we were using gcc |
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| 53 | dnl AC_MSG_CHECKING(for prototype-savvy compiler) |
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| 54 | dnl AC_CACHE_VAL(g77_cv_sys_proto, |
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| 55 | dnl [AC_TRY_LINK(, |
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| 56 | dnl dnl looks screwy because TRY_LINK expects a function body |
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| 57 | dnl [return 0;} int foo (int * bar) {], |
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| 58 | dnl g77_cv_sys_proto=yes, |
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| 59 | dnl [g77_cv_sys_proto=no |
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| 60 | dnl AC_DEFINE(KR_headers)])]) |
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| 61 | dnl AC_MSG_RESULT($g77_cv_sys_proto) |
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| 62 | |
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| 63 | AC_MSG_CHECKING(for posix) |
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| 64 | AC_CACHE_VAL(g77_cv_header_posix, |
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| 65 | AC_EGREP_CPP(yes, |
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| 66 | [#include <sys/types.h> |
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| 67 | #include <unistd.h> |
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| 68 | #ifdef _POSIX_VERSION |
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| 69 | yes |
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| 70 | #endif |
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| 71 | ], |
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| 72 | g77_cv_header_posix=yes, |
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| 73 | g77_cv_header_posix=no)) |
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| 74 | AC_MSG_RESULT($g77_cv_header_posix) |
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| 75 | |
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| 76 | # We can rely on the GNU library being posix-ish. I guess checking the |
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| 77 | # header isn't actually like checking the functions, though... |
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| 78 | AC_MSG_CHECKING(for GNU library) |
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| 79 | AC_CACHE_VAL(g77_cv_lib_gnu, |
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| 80 | AC_EGREP_CPP(yes, |
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| 81 | [#include <stdio.h> |
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| 82 | #ifdef __GNU_LIBRARY__ |
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| 83 | yes |
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| 84 | #endif |
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| 85 | ], |
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| 86 | g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no)) |
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| 87 | AC_MSG_RESULT($g77_cv_lib_gnu) |
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| 88 | |
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| 89 | # Apparently cygwin needs to be special-cased. |
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| 90 | AC_MSG_CHECKING([for cyg\`win'32]) |
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| 91 | AC_CACHE_VAL(g77_cv_sys_cygwin32, |
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| 92 | AC_EGREP_CPP(yes, |
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| 93 | [#ifdef __CYGWIN32__ |
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| 94 | yes |
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| 95 | #endif |
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| 96 | ], |
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| 97 | g77_cv_sys_cygwin32=yes, |
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| 98 | g77_cv_sys_cygwin32=no)) |
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| 99 | AC_MSG_RESULT($g77_cv_sys_cygwin32) |
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| 100 | |
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| 101 | # ditto for mingw32. |
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| 102 | AC_MSG_CHECKING([for mingw32]) |
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| 103 | AC_CACHE_VAL(g77_cv_sys_mingw32, |
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| 104 | AC_EGREP_CPP(yes, |
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| 105 | [#ifdef __MINGW32__ |
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| 106 | yes |
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| 107 | #endif |
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| 108 | ], |
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| 109 | g77_cv_sys_mingw32=yes, |
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| 110 | g77_cv_sys_mingw32=no)) |
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| 111 | AC_MSG_RESULT($g77_cv_sys_mingw32) |
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| 112 | |
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| 113 | |
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| 114 | AC_CHECK_HEADER(fcntl.h, |
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| 115 | test $g77_cv_header_posix = yes && AC_DEFINE(_POSIX_SOURCE), |
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[16959] | 116 | AC_DEFINE(NO_FCNTL, 1, [Define if fcntl.h is missing.]) |
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| 117 | AC_DEFINE(OPEN_DECL, 1, [Define if fcntl.h is missing.])) |
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[14547] | 118 | |
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| 119 | dnl Checks for typedefs, structures, and compiler characteristics. |
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| 120 | AC_C_CONST |
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| 121 | AC_TYPE_SIZE_T |
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| 122 | |
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| 123 | dnl Checks for library functions. |
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| 124 | |
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| 125 | # This should always succeed on unix. |
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| 126 | # Apparently positive result on cygwin loses re. NON_UNIX_STDIO |
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| 127 | # (as of cygwin b18). Likewise on mingw. |
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| 128 | AC_CHECK_FUNC(fstat) |
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| 129 | AC_MSG_CHECKING([need for NON_UNIX_STDIO]) |
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| 130 | if test $g77_cv_sys_cygwin32 = yes \ |
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| 131 | || test $g77_cv_sys_mingw32 = yes \ |
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| 132 | || test $ac_cv_func_fstat = no; then |
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| 133 | AC_MSG_RESULT(yes) |
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[16959] | 134 | AC_DEFINE(NON_UNIX_STDIO, 1, [Define if we do not have Unix Stdio.]) |
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[14547] | 135 | else |
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| 136 | AC_MSG_RESULT(no) |
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| 137 | fi |
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| 138 | |
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[16959] | 139 | AC_CHECK_FUNCS(ftruncate) |
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| 140 | AC_CHECK_FUNCS(mkstemp) |
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[14547] | 141 | AC_CHECK_FUNCS(tempnam) |
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| 142 | |
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| 143 | # posix will guarantee the right behaviour for sprintf, else we can't be |
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| 144 | # sure; HEADER_STDC wouldn't be the right check in sunos4, for instance. |
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| 145 | # However, on my sunos4/gcc setup unistd.h leads us wrongly to believe |
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| 146 | # we're posix-conformant, so always do the test. |
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| 147 | AC_MSG_CHECKING(for ansi/posix sprintf result) |
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| 148 | dnl This loses if included as an argument to AC_CACHE_VAL because the |
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| 149 | dnl changequote doesn't take effect and the [] vanish. |
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| 150 | dnl fixme: use cached value |
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| 151 | AC_TRY_RUN(changequote(<<, >>)dnl |
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| 152 | <<#include <stdio.h> |
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| 153 | /* does sprintf return the number of chars transferred? */ |
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| 154 | main () {char foo[2]; (sprintf(foo, "1") == 1) ? exit(0) : exit(1);} |
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| 155 | >>changequote([, ]), |
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| 156 | g77_cv_sys_sprintf_ansi=yes, |
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| 157 | g77_cv_sys_sprintf_ansi=no, |
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| 158 | g77_cv_sys_sprintf_ansi=no) |
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| 159 | AC_CACHE_VAL(g77_cv_sys_sprintf_ansi, |
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| 160 | g77_cv_sys_sprintf_ansi=$g77_cv_sys_sprintf_ansi) |
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| 161 | dnl We get a misleading `(cached)' message... |
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| 162 | AC_MSG_RESULT($g77_cv_sys_sprintf_ansi) |
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| 163 | |
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| 164 | # The cygwin patch takes steps to avoid defining USE_STRLEN here -- I don't |
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| 165 | # understand why. |
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| 166 | if test $g77_cv_sys_sprintf_ansi != yes; then |
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[16959] | 167 | AC_DEFINE(USE_STRLEN, 1, [Define if we use strlen.]) |
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[14547] | 168 | fi |
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| 169 | |
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| 170 | # define NON_ANSI_RW_MODES on unix (can't hurt) |
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| 171 | AC_MSG_CHECKING(NON_ANSI_RW_MODES) |
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| 172 | AC_EGREP_CPP(yes, |
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| 173 | [#ifdef unix |
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| 174 | yes |
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| 175 | #endif |
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| 176 | #ifdef __unix |
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| 177 | yes |
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| 178 | #endif |
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| 179 | #ifdef __unix__ |
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| 180 | yes |
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| 181 | #endif |
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| 182 | ], is_unix=yes, is_unix=no) |
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| 183 | # NON_ANSI_RW_MODES shouldn't be necessary on cygwin for binary mounts. |
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| 184 | if test $g77_cv_sys_cygwin32 = yes || test $g77_cv_sys_mingw32 = yes; then |
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| 185 | AC_MSG_RESULT(no) |
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| 186 | else |
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| 187 | if test $is_unix = yes; then |
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[16959] | 188 | AC_DEFINE(NON_ANSI_RW_MODES, 1, [Define if we have non ANSI RW modes.]) |
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[14547] | 189 | AC_MSG_RESULT(yes) |
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| 190 | else |
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| 191 | AC_MSG_RESULT(no) |
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| 192 | fi |
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| 193 | fi |
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| 194 | |
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| 195 | # This EOF_CHAR is a misfeature on unix. |
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[16959] | 196 | AC_DEFINE(NO_EOF_CHAR_CHECK, 1, [Always defined.]) |
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[14547] | 197 | |
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[16959] | 198 | AC_TYPE_OFF_T |
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[14547] | 199 | |
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[16959] | 200 | AC_DEFINE(Skip_f2c_Undefs, 1, [Define to skip f2c undefs.]) |
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| 201 | |
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[14547] | 202 | AC_OUTPUT(Makefile) |
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| 203 | |
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| 204 | dnl We might have configuration options to: |
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| 205 | dnl * change unit preconnexion in err.c (f_init.c) |
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| 206 | dnl * -DALWAYS_FLUSH |
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| 207 | dnl * -DOMIT_BLANK_CC |
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| 208 | |
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| 209 | dnl Local Variables: |
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| 210 | dnl comment-start: "dnl " |
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| 211 | dnl comment-end: "" |
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| 212 | dnl comment-start-skip: "\\bdnl\\b\\s *" |
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| 213 | dnl End: |
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