| 1 | # Process this file with autoconf to produce a configure script.
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| 2 | # Copyright (C) 1995, 1997, 1998, 2001 Free Software Foundation, Inc.
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| 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(getarg_.c)
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| 24 |
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| 25 | dnl Checks for programs.
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| 26 |
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| 27 | dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may
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| 28 | dnl not be able to.
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| 29 | define([AC_PROG_CC_WORKS],[])
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| 30 |
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| 31 | # For g77 we'll set CC to point at the built gcc, but this will get it into
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| 32 | # the makefiles
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| 33 | AC_PROG_CC
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| 34 |
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| 35 | LIBTOOL='$(SHELL) ../libtool'
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| 36 | AC_SUBST(LIBTOOL)
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| 37 |
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| 38 | test "$AR" || AR=ar
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| 39 | AC_SUBST(AR)
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| 40 | if test "$RANLIB"; then :
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| 41 | AC_SUBST(RANLIB)
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| 42 | else
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| 43 | AC_PROG_RANLIB
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| 44 | fi
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| 45 | AC_PROG_MAKE_SET
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| 46 |
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| 47 | dnl Checks for libraries.
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| 48 |
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| 49 | dnl Checks for header files.
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| 50 | # Sanity check for the cross-compilation case:
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| 51 | AC_CHECK_HEADER(stdio.h,:,
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| 52 | [AC_MSG_ERROR([Can't find stdio.h.
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| 53 | You must have a usable C system for the target already installed, at least
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| 54 | including headers and, preferably, the library, before you can configure
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| 55 | the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
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| 56 | then the target library, then build with \`LANGUAGES=f77'.])])
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| 57 |
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| 58 | AC_HEADER_STDC
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| 59 | AC_MSG_CHECKING(for posix)
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| 60 | AC_CACHE_VAL(g77_cv_header_posix,
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| 61 | AC_EGREP_CPP(yes,
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| 62 | [#include <sys/types.h>
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| 63 | #include <unistd.h>
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| 64 | #ifdef _POSIX_VERSION
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| 65 | yes
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| 66 | #endif
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| 67 | ],
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| 68 | g77_cv_header_posix=yes,
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| 69 | g77_cv_header_posix=no))
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| 70 | AC_MSG_RESULT($g77_cv_header_posix)
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| 71 |
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| 72 | # We can rely on the GNU library being posix-ish. I guess checking the
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| 73 | # header isn't actually like checking the functions, though...
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| 74 | AC_MSG_CHECKING(for GNU library)
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| 75 | AC_CACHE_VAL(g77_cv_lib_gnu,
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| 76 | AC_EGREP_CPP(yes,
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| 77 | [#include <stdio.h>
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| 78 | #ifdef __GNU_LIBRARY__
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| 79 | yes
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| 80 | #endif
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| 81 | ],
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| 82 | g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no))
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| 83 | AC_MSG_RESULT($g77_cv_lib_gnu)
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| 84 |
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| 85 | dnl Checks for library functions.
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| 86 | AC_TYPE_SIGNAL
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| 87 | # we'll get atexit by default
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| 88 | if test $ac_cv_header_stdc != yes; then
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| 89 | AC_CHECK_FUNC(atexit,
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| 90 | AC_DEFINE(onexit,atexit),dnl just in case
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| 91 | [AC_DEFINE(NO_ONEXIT)
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| 92 | AC_CHECK_FUNC(onexit,,
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| 93 | [AC_CHECK_FUNC(on_exit,
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| 94 | AC_DEFINE(onexit,on_exit),)])])
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| 95 | else true
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| 96 | fi
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| 97 |
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| 98 | dnl perhaps should check also for remainder
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| 99 | dnl Unfortunately, the message implies we're just checking for -lm...
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| 100 | AC_CHECK_LIB(m,drem,AC_DEFINE(IEEE_drem))
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| 101 |
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| 102 | AC_DEFINE(Skip_f2c_Undefs)
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| 103 | AC_DEFINE(IEEE_COMPLEX_DIVIDE)
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| 104 |
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| 105 | AC_OUTPUT(Makefile)
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| 106 |
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| 107 | dnl Local Variables:
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| 108 | dnl comment-start: "dnl "
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| 109 | dnl comment-end: ""
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| 110 | dnl comment-start-skip: "\\bdnl\\b\\s *"
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| 111 | dnl End:
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