1 # Process this file with autoconf to produce a configure script.
2 # Copyright (C) 1995, 1997, 1998, 1999 Free Software Foundation, Inc.
3 # Contributed by Dave Love (d.love@dl.ac.uk).
5 #This file is part of GNU Fortran.
7 #GNU Fortran is free software; you can redistribute it and/or modify
8 #it under the terms of the GNU General Public License as published by
9 #the Free Software Foundation; either version 2, or (at your option)
12 #GNU Fortran is distributed in the hope that it will be useful,
13 #but WITHOUT ANY WARRANTY; without even the implied warranty of
14 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 #GNU General Public License for more details.
17 #You should have received a copy of the GNU General Public License
18 #along with GNU Fortran; see the file COPYING. If not, write to
19 #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
23 AC_INIT(libF77/Version.c)
26 target_alias=${target_alias-$target}
27 AC_SUBST(target_alias)
30 GLIBCPP_EXPORT_INSTALL_INFO
32 # If the language specific compiler does not exist, but the "gcc" directory
33 # does, we do not build anything. Note, $r is set by the top-level Makefile.
34 # Note that when we look for the compiler, we search both with and without
35 # extension to handle cross and canadian cross builds.
38 AC_MSG_CHECKING(if compiler $compiler_name has been built)
39 AC_CACHE_VAL(g77_cv_compiler_exists,
40 [g77_cv_compiler_exists=yes
42 if test -d "$r"/gcc; then
43 if test -f "$r"/gcc/$compiler_name \
44 || test -f "$r"/gcc/$compiler_name.exe; then
47 g77_cv_compiler_exists=no
48 echo "rm -f config.cache config.log multilib.out" > skip-this-dir
53 AC_MSG_RESULT($g77_cv_compiler_exists)
54 if test x$g77_cv_compiler_exists = xno
56 rm -f Makefile conftest* confdefs* core
60 dnl Checks for programs.
64 dnl These should be inherited in the recursive make, but ensure they are
68 if test "$RANLIB"; then :
76 dnl Checks for header files.
77 # Sanity check for the cross-compilation case:
78 AC_CHECK_HEADER(stdio.h,:,
79 [AC_MSG_ERROR([Can't find stdio.h.
80 You must have a usable C system for the target already installed, at least
81 including headers and, preferably, the library, before you can configure
82 the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
83 then the target library, then build with \`LANGUAGES=f77'.])])
85 dnl Checks for g77 integer types built into gcc's C front end.
86 AC_MSG_CHECKING(for built-in g77 integer types)
87 AC_CACHE_VAL(libf2c_cv_has_g77_builtin_types,
92 __g77_ulongint g77ul;],
93 libf2c_cv_has_g77_builtin_types=yes,
94 libf2c_cv_has_g77_builtin_types=no)])
95 AC_MSG_RESULT($libf2c_cv_has_g77_builtin_types)
96 if test $libf2c_cv_has_g77_builtin_types = no; then
97 AC_MSG_ERROR([gcc doesn't define all of the built in types __g77_integer,
98 __g77_uinteger, __g77_longint, and __g77_ulongint. You may not be using
99 a new enough version of gcc, or your target may not have type sizes which
100 accommodate those types.])
103 # avoid confusion in case the `makefile's from the f2c distribution have
105 test -f libF77/makefile && mv libF77/makefile libF77/makefile.ori
106 test -f libI77/makefile && mv libI77/makefile libI77/makefile.ori
107 test -f libU77/makefile && mv libU77/makefile libU77/makefile.ori
109 AC_CONFIG_SUBDIRS(libU77 libI77 libF77)
110 # Do Makefile first since g2c.h depends on it and shouldn't get an
111 # earlier timestamp. Of course, it does when the multilib gunk below
112 # edits Makefile, sigh; see additional touch below.
113 AC_OUTPUT(Makefile g2c.h:g2c.hin,
114 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
115 if test -n "$CONFIG_FILES"; then
116 if test -n "${with_target_subdir}"; then
117 # FIXME: We shouldn't need to set ac_file
119 . ${toplevel_srcdir}/config-ml.in
120 touch g2c.h # to keep it more recent than Makefile
126 with_target_subdir=${with_target_subdir}
127 with_multisubdir=${with_multisubdir}
128 ac_configure_args="--enable-multilib ${ac_configure_args}"
129 toplevel_srcdir=${toplevel_srcdir}
130 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
135 dnl comment-start: "dnl "
137 dnl comment-start-skip: "\\bdnl\\b\\s *"