1 # Process this file with autoconf to produce a configure script.
2 # Copyright (C) 1995, 1997, 1998, 1999, 2002, 2003
3 # Free Software Foundation, Inc.
4 # Contributed by Dave Love (d.love@dl.ac.uk).
6 #This file is part of GNU Fortran.
8 #GNU Fortran is free software; you can redistribute it and/or modify
9 #it under the terms of the GNU General Public License as published by
10 #the Free Software Foundation; either version 2, or (at your option)
13 #GNU Fortran is distributed in the hope that it will be useful,
14 #but WITHOUT ANY WARRANTY; without even the implied warranty of
15 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 #GNU General Public License for more details.
18 #You should have received a copy of the GNU General Public License
19 #along with GNU Fortran; see the file COPYING. If not, write to
20 #the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 AC_INIT(libF77/Version.c)
26 # This works around the fact that libtool configuration may change LD
27 # for this particular configuration, but some shells, instead of
28 # keeping the changes in LD private, export them just because LD is
30 ORIGINAL_LD_FOR_MULTILIBS=$LD
32 GLIBCPP_TOPREL_CONFIGURE
35 target_alias=${target_alias-$target}
36 AC_SUBST(target_alias)
39 GLIBCPP_EXPORT_INSTALL_INFO
41 # If the language specific compiler does not exist, but the "gcc" directory
42 # does, we do not build anything. Note, $r is set by the top-level Makefile.
43 # Note that when we look for the compiler, we search both with and without
44 # extension to handle cross and canadian cross builds.
47 AC_MSG_CHECKING(if compiler $compiler_name has been built)
48 AC_CACHE_VAL(g77_cv_compiler_exists,
49 [g77_cv_compiler_exists=yes
51 if test -d "$r"/gcc; then
52 if test -f "$r"/gcc/$compiler_name \
53 || test -f "$r"/gcc/$compiler_name.exe; then
56 g77_cv_compiler_exists=no
57 echo "rm -f config.cache config.log multilib.out" > skip-this-dir
62 AC_MSG_RESULT($g77_cv_compiler_exists)
63 if test x$g77_cv_compiler_exists = xno
65 rm -f Makefile conftest* confdefs* core
69 dnl Checks for programs.
73 dnl These should be inherited in the recursive make, but ensure they are
77 if test "$RANLIB"; then :
85 dnl Checks for header files.
86 # Sanity check for the cross-compilation case:
87 AC_CHECK_HEADER(stdio.h,:,
88 [AC_MSG_ERROR([Can't find stdio.h.
89 You must have a usable C system for the target already installed, at least
90 including headers and, preferably, the library, before you can configure
91 the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
92 then the target library, then build with \`LANGUAGES=f77'.])])
94 dnl Checks for g77 integer types built into gcc's C front end.
95 AC_MSG_CHECKING(for built-in g77 integer types)
96 AC_CACHE_VAL(libf2c_cv_has_g77_builtin_types,
101 __g77_ulongint g77ul;],
102 libf2c_cv_has_g77_builtin_types=yes,
103 libf2c_cv_has_g77_builtin_types=no)])
104 AC_MSG_RESULT($libf2c_cv_has_g77_builtin_types)
105 if test $libf2c_cv_has_g77_builtin_types = no; then
106 AC_MSG_ERROR([gcc doesn't define all of the built in types __g77_integer,
107 __g77_uinteger, __g77_longint, and __g77_ulongint. You may not be using
108 a new enough version of gcc, or your target may not have type sizes which
109 accommodate those types.])
112 # avoid confusion in case the `makefile's from the f2c distribution have
114 test -f libF77/makefile && mv libF77/makefile libF77/makefile.ori
115 test -f libI77/makefile && mv libI77/makefile libI77/makefile.ori
116 test -f libU77/makefile && mv libU77/makefile libU77/makefile.ori
118 AC_CONFIG_SUBDIRS(libU77 libI77 libF77)
119 # Do Makefile first since g2c.h depends on it and shouldn't get an
120 # earlier timestamp. Of course, it does when the multilib gunk below
121 # edits Makefile, sigh; see additional touch below.
122 AC_OUTPUT(Makefile g2c.h:g2c.hin,
123 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
124 if test -n "$CONFIG_FILES"; then
125 LD="${ORIGINAL_LD_FOR_MULTILIBS}"
126 if test -n "${with_target_subdir}"; then
127 # FIXME: We shouldn't need to set ac_file
129 . ${toplevel_srcdir}/config-ml.in
130 touch g2c.h # to keep it more recent than Makefile
136 with_target_subdir=${with_target_subdir}
137 with_multisubdir=${with_multisubdir}
138 ac_configure_args="--enable-multilib ${ac_configure_args}"
139 toplevel_srcdir=${toplevel_srcdir}
140 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
141 ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
146 dnl comment-start: "dnl "
148 dnl comment-start-skip: "\\bdnl\\b\\s *"