1999-09-18 10:51:31 +00:00
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# Process this file with autoconf to produce a configure script.
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# Copyright (C) 1995, 1997, 1998 Free Software Foundation, Inc.
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# Contributed by Dave Love (d.love@dl.ac.uk).
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#
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#This file is part of GNU Fortran.
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#
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#GNU Fortran is free software; you can redistribute it and/or modify
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#it under the terms of the GNU General Public License as published by
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#the Free Software Foundation; either version 2, or (at your option)
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#any later version.
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#
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#GNU Fortran is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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#GNU General Public License for more details.
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#
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#You should have received a copy of the GNU General Public License
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#along with GNU Fortran; see the file COPYING. If not, write to
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#the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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#02111-1307, USA.
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1999-09-19 05:59:11 +00:00
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AC_PREREQ(2.12.1)
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1999-09-18 10:51:31 +00:00
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AC_INIT(getarg_.c)
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dnl Checks for programs.
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# For g77 we'll set CC to point at the built gcc, but this will get it into
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# the makefiles
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AC_PROG_CC
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test "$AR" || AR=ar
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AC_SUBST(AR)
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AC_PROG_MAKE_SET
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dnl Checks for libraries.
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dnl Checks for header files.
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# Sanity check for the cross-compilation case:
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AC_CHECK_HEADER(stdio.h,:,
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[AC_MSG_ERROR([Can't find stdio.h.
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You must have a usable C system for the target already installed, at least
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including headers and, preferably, the library, before you can configure
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the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
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then the target library, then build with \`LANGUAGES=f77'.])])
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AC_HEADER_STDC
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dnl We could do this if we didn't know we were using gcc
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dnl AC_MSG_CHECKING(for prototype-savvy compiler)
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dnl AC_CACHE_VAL(g77_cv_sys_proto,
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dnl [AC_TRY_LINK(,
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dnl dnl looks screwy because TRY_LINK expects a function body
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dnl [return 0;} int foo (int * bar) {],
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dnl g77_cv_sys_proto=yes,
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dnl [g77_cv_sys_proto=no
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dnl AC_DEFINE(KR_headers)])])
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dnl AC_MSG_RESULT($g77_cv_sys_proto)
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AC_MSG_CHECKING(for posix)
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AC_CACHE_VAL(g77_cv_header_posix,
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AC_EGREP_CPP(yes,
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[#include <sys/types.h>
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#include <unistd.h>
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#ifdef _POSIX_VERSION
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yes
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#endif
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],
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g77_cv_header_posix=yes,
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g77_cv_header_posix=no))
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AC_MSG_RESULT($g77_cv_header_posix)
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# We can rely on the GNU library being posix-ish. I guess checking the
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# header isn't actually like checking the functions, though...
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AC_MSG_CHECKING(for GNU library)
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AC_CACHE_VAL(g77_cv_lib_gnu,
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AC_EGREP_CPP(yes,
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[#include <stdio.h>
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#ifdef __GNU_LIBRARY__
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yes
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#endif
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],
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g77_cv_lib_gnu=yes, g77_cv_lib_gnu=no))
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AC_MSG_RESULT($g77_cv_lib_gnu)
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dnl Checks for library functions.
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AC_TYPE_SIGNAL
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# we'll get atexit by default
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if test $ac_cv_header_stdc != yes; then
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AC_CHECK_FUNC(atexit,
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AC_DEFINE(onexit,atexit),dnl just in case
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[AC_DEFINE(NO_ONEXIT)
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AC_CHECK_FUNC(onexit,,
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[AC_CHECK_FUNC(on_exit,
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AC_DEFINE(onexit,on_exit),)])])
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else true
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fi
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dnl perhaps should check also for remainder
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dnl Unfortunately, the message implies we're just checking for -lm...
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AC_CHECK_LIB(m,drem,AC_DEFINE(IEEE_drem))
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AC_DEFINE(Skip_f2c_Undefs)
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AC_OUTPUT(Makefile)
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dnl Local Variables:
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dnl comment-start: "dnl "
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dnl comment-end: ""
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dnl comment-start-skip: "\\bdnl\\b\\s *"
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dnl End:
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