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)
25 if test "${srcdir}" = "." ; then
26 if test "${with_target_subdir}" != "." ; then
27 topsrcdir=${with_multisrctop}../..
29 topsrcdir=${with_multisrctop}..
32 topsrcdir=${srcdir}/..
34 dnl This is needed for a multilibbed build in the source tree so
35 dnl that install-sh and config.sub get found.
36 AC_CONFIG_AUX_DIR($topsrcdir)
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.
67 # For g77 we'll set CC to point at the built gcc, but this will get it into
71 dnl These should be inherited in the recursive make, but ensure they are
75 if test "$RANLIB"; then :
83 dnl Checks for header files.
84 # Sanity check for the cross-compilation case:
85 AC_CHECK_HEADER(stdio.h,:,
86 [AC_MSG_ERROR([Can't find stdio.h.
87 You must have a usable C system for the target already installed, at least
88 including headers and, preferably, the library, before you can configure
89 the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
90 then the target library, then build with \`LANGUAGES=f77'.])])
92 # We have to firkle with the info in hconfig.h to figure out suitable types
93 # (via com.h). proj.h and com.h are in gcc/f/, config.h which they need
94 # is in gcc/ and the config files are in gcc/config/.
95 AC_MSG_CHECKING(f2c integer type)
96 # Set this back later below!
99 extra_includes="-I$topsrcdir/gcc/f -I$topsrcdir/gcc -I$topsrcdir/include -I$topsrcdir/gcc/config -I$r/gcc"
100 ac_cpp="$late_ac_cpp -DIN_GCC -DHAVE_CONFIG_H $extra_includes"
102 # The AC_EGREP_CPPs below have been known to fail when the header
103 # path is wrong after things have been moved about; the cpp error status
104 # counts for nothing. First check that there aren't any errors from
106 CFLAGS="$CFLAGS -DHAVE_CONFIG_H -DIN_GCC $extra_includes"
107 AC_TRY_COMPILE([#include "proj.h"
108 #define FFECOM_DETERMINE_TYPES 1
110 AC_MSG_ERROR([Can't run check for integer sizes -- see config.log]))
113 AC_CACHE_VAL(g77_cv_sys_f2cinteger,
114 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
115 AC_EGREP_CPP(F2C_INTEGER=long int,
117 #define FFECOM_DETERMINE_TYPES 1
119 #if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
121 #elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
124 # error "Cannot find a suitable type for F2C_INTEGER"
127 g77_cv_sys_f2cinteger="long int",)
128 if test "$g77_cv_sys_f2cinteger" = ""; then
129 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
130 AC_EGREP_CPP(F2C_INTEGER=int,
132 #define FFECOM_DETERMINE_TYPES 1
134 #if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
136 #elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
139 # error "Cannot find a suitable type for F2C_INTEGER"
142 g77_cv_sys_f2cinteger=int,)
144 if test "$g77_cv_sys_f2cinteger" = ""; then
146 AC_MSG_ERROR([Can't determine type for f2c integer; config.log may help.])
149 AC_MSG_RESULT($g77_cv_sys_f2cinteger)
150 F2C_INTEGER=$g77_cv_sys_f2cinteger
151 AC_SUBST(F2C_INTEGER)
153 AC_MSG_CHECKING(f2c long int type)
154 AC_CACHE_VAL(g77_cv_sys_f2clongint,
155 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
156 AC_EGREP_CPP(F2C_LONGINT=long int,
158 #define FFECOM_DETERMINE_TYPES 1
160 #if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
162 #elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
163 F2C_LONGINT=long long int
165 # error "Cannot find a suitable type for F2C_LONGINT"
168 g77_cv_sys_f2clongint="long int",)
170 if test "$g77_cv_sys_f2clongint" = ""; then
171 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
172 AC_EGREP_CPP(F2C_LONGINT=long long int,
174 #define FFECOM_DETERMINE_TYPES 1
176 #if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
178 #elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
179 F2C_LONGINT=long long int
181 # error "Cannot find a suitable type for F2C_LONGINT"
184 g77_cv_sys_f2clongint="long long int",)
186 if test "$g77_cv_sys_f2clongint" = ""; then
188 AC_MSG_ERROR([Can't determine type for f2c long int; config.log may help.])
191 AC_MSG_RESULT($g77_cv_sys_f2clongint)
192 F2C_LONGINT=$g77_cv_sys_f2clongint
193 AC_SUBST(F2C_LONGINT)
196 # avoid confusion in case the `makefile's from the f2c distribution have
198 test -f libF77/makefile && mv libF77/makefile libF77/makefile.ori
199 test -f libI77/makefile && mv libI77/makefile libI77/makefile.ori
200 test -f libU77/makefile && mv libU77/makefile libU77/makefile.ori
202 # Get the version trigger filename from the toplevel
203 if [[ "${with_gcc_version_trigger+set}" = set ]]; then
204 gcc_version_trigger=$with_gcc_version_trigger
205 gcc_version=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/'`
211 AC_SUBST(gcc_version)
212 AC_SUBST(gcc_version_trigger)
214 AC_SUBST(target_alias)
215 AC_CONFIG_SUBDIRS(libU77 libI77 libF77)
216 # Do Makefile first since g2c.h depends on it and shouldn't get an
217 # earlier timestamp. Of course, it does when the multilib gunk below
218 # edits Makefile, sigh; see additional touch below.
219 AC_OUTPUT(Makefile g2c.h:g2c.hin,
220 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
221 if test -n "$CONFIG_FILES"; then
222 if test -n "${with_target_subdir}"; then
223 # FIXME: We shouldn't need to set ac_file
225 . ${topsrcdir}/config-ml.in
226 touch g2c.h # to keep it more recent than Makefile
232 with_target_subdir=${with_target_subdir}
233 with_multisubdir=${with_multisubdir}
234 ac_configure_args="--enable-multilib ${ac_configure_args}"
235 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
236 topsrcdir=${topsrcdir}
241 dnl comment-start: "dnl "
243 dnl comment-start-skip: "\\bdnl\\b\\s *"