1 # Process this file with autoconf to produce a configure script.
2 # Copyright (C) 1995, 1997, 1998, 1999, 2002 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)
25 # This works around the fact that libtool configuration may change LD
26 # for this particular configuration, but some shells, instead of
27 # keeping the changes in LD private, export them just because LD is
29 ORIGINAL_LD_FOR_MULTILIBS=$LD
32 target_alias=${target_alias-$target}
33 AC_SUBST(target_alias)
36 GLIBCPP_EXPORT_INSTALL_INFO
38 # If the language specific compiler does not exist, but the "gcc" directory
39 # does, we do not build anything. Note, $r is set by the top-level Makefile.
40 # Note that when we look for the compiler, we search both with and without
41 # extension to handle cross and canadian cross builds.
44 AC_MSG_CHECKING(if compiler $compiler_name has been built)
45 AC_CACHE_VAL(g77_cv_compiler_exists,
46 [g77_cv_compiler_exists=yes
48 if test -d "$r"/gcc; then
49 if test -f "$r"/gcc/$compiler_name \
50 || test -f "$r"/gcc/$compiler_name.exe; then
53 g77_cv_compiler_exists=no
54 echo "rm -f config.cache config.log multilib.out" > skip-this-dir
59 AC_MSG_RESULT($g77_cv_compiler_exists)
60 if test x$g77_cv_compiler_exists = xno
62 rm -f Makefile conftest* confdefs* core
66 dnl Checks for programs.
70 dnl These should be inherited in the recursive make, but ensure they are
74 if test "$RANLIB"; then :
82 dnl Checks for header files.
83 # Sanity check for the cross-compilation case:
84 AC_CHECK_HEADER(stdio.h,:,
85 [AC_MSG_ERROR([Can't find stdio.h.
86 You must have a usable C system for the target already installed, at least
87 including headers and, preferably, the library, before you can configure
88 the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
89 then the target library, then build with \`LANGUAGES=f77'.])])
91 dnl Checks for g77 integer types built into gcc's C front end.
92 AC_MSG_CHECKING(for built-in g77 integer types)
93 AC_CACHE_VAL(libf2c_cv_has_g77_builtin_types,
98 __g77_ulongint g77ul;],
99 libf2c_cv_has_g77_builtin_types=yes,
100 libf2c_cv_has_g77_builtin_types=no)])
101 AC_MSG_RESULT($libf2c_cv_has_g77_builtin_types)
102 if test $libf2c_cv_has_g77_builtin_types = no; then
103 AC_MSG_ERROR([gcc doesn't define all of the built in types __g77_integer,
104 __g77_uinteger, __g77_longint, and __g77_ulongint. You may not be using
105 a new enough version of gcc, or your target may not have type sizes which
106 accommodate those types.])
109 # avoid confusion in case the `makefile's from the f2c distribution have
111 test -f libF77/makefile && mv libF77/makefile libF77/makefile.ori
112 test -f libI77/makefile && mv libI77/makefile libI77/makefile.ori
113 test -f libU77/makefile && mv libU77/makefile libU77/makefile.ori
115 AC_CONFIG_SUBDIRS(libU77 libI77 libF77)
116 # Do Makefile first since g2c.h depends on it and shouldn't get an
117 # earlier timestamp. Of course, it does when the multilib gunk below
118 # edits Makefile, sigh; see additional touch below.
119 AC_OUTPUT(Makefile g2c.h:g2c.hin,
120 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
121 if test -n "$CONFIG_FILES"; then
122 LD="${ORIGINAL_LD_FOR_MULTILIBS}"
123 if test -n "${with_target_subdir}"; then
124 # FIXME: We shouldn't need to set ac_file
126 . ${toplevel_srcdir}/config-ml.in
127 touch g2c.h # to keep it more recent than Makefile
133 with_target_subdir=${with_target_subdir}
134 with_multisubdir=${with_multisubdir}
135 ac_configure_args="--enable-multilib ${ac_configure_args}"
136 toplevel_srcdir=${toplevel_srcdir}
137 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
142 dnl comment-start: "dnl "
144 dnl comment-start-skip: "\\bdnl\\b\\s *"