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 # We have to handle 3 cases -- native, cross and canadian cross -- and
39 # the extension returned from this macro needs to be treated as a possible
40 # scenario and not the only one.
43 # If the language specific compiler does not exist, but the "gcc" directory
44 # does, we do not build anything. Note, $r is set by the top-level Makefile.
45 # Note that when we look for the compiler, we search both with and without
46 # extension to handle cross and canadian cross builds.
49 AC_MSG_CHECKING(if compiler $compiler_name has been built)
50 AC_CACHE_VAL(g77_cv_compiler_exists,
51 [g77_cv_compiler_exists=yes
53 if test -d "$r"/gcc; then
54 if test -f "$r"/gcc/$compiler_name \
55 || test -f "$r"/gcc/$compiler_name$EXEEXT; then
58 g77_cv_compiler_exists=no
59 echo "rm -f config.cache config.log multilib.out" > skip-this-dir
64 AC_MSG_RESULT($g77_cv_compiler_exists)
65 if test x$g77_cv_compiler_exists = xno
67 rm -f Makefile conftest* confdefs* core
71 dnl Checks for programs.
72 # For g77 we'll set CC to point at the built gcc, but this will get it into
76 dnl These should be inherited in the recursive make, but ensure they are
80 if test "$RANLIB"; then :
88 dnl Checks for header files.
89 # Sanity check for the cross-compilation case:
90 AC_CHECK_HEADER(stdio.h,:,
91 [AC_MSG_ERROR([Can't find stdio.h.
92 You must have a usable C system for the target already installed, at least
93 including headers and, preferably, the library, before you can configure
94 the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c',
95 then the target library, then build with \`LANGUAGES=f77'.])])
97 # We have to firkle with the info in hconfig.h to figure out suitable types
98 # (via com.h). proj.h and com.h are in gcc/f/, config.h which they need
99 # is in gcc/ and the config files are in gcc/config/.
100 AC_MSG_CHECKING(f2c integer type)
101 # Set this back later below!
104 extra_includes="-I$topsrcdir/gcc/f -I$topsrcdir/gcc -I$topsrcdir/include -I$topsrcdir/gcc/config -I$r/gcc"
105 ac_cpp="$late_ac_cpp -DIN_GCC -DHAVE_CONFIG_H $extra_includes"
107 # The AC_EGREP_CPPs below have been known to fail when the header
108 # path is wrong after things have been moved about; the cpp error status
109 # counts for nothing. First check that there aren't any errors from
111 CFLAGS="$CFLAGS -DHAVE_CONFIG_H -DIN_GCC $extra_includes"
112 AC_TRY_COMPILE([#include "proj.h"
113 #define FFECOM_DETERMINE_TYPES 1
115 AC_MSG_ERROR([Can't run check for integer sizes -- see config.log]))
118 AC_CACHE_VAL(g77_cv_sys_f2cinteger,
119 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
120 AC_EGREP_CPP(F2C_INTEGER=long int,
122 #define FFECOM_DETERMINE_TYPES 1
124 #if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
126 #elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
129 # error "Cannot find a suitable type for F2C_INTEGER"
132 g77_cv_sys_f2cinteger="long int",)
133 if test "$g77_cv_sys_f2cinteger" = ""; then
134 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
135 AC_EGREP_CPP(F2C_INTEGER=int,
137 #define FFECOM_DETERMINE_TYPES 1
139 #if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
141 #elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
144 # error "Cannot find a suitable type for F2C_INTEGER"
147 g77_cv_sys_f2cinteger=int,)
149 if test "$g77_cv_sys_f2cinteger" = ""; then
151 AC_MSG_ERROR([Can't determine type for f2c integer; config.log may help.])
154 AC_MSG_RESULT($g77_cv_sys_f2cinteger)
155 F2C_INTEGER=$g77_cv_sys_f2cinteger
156 AC_SUBST(F2C_INTEGER)
158 AC_MSG_CHECKING(f2c long int type)
159 AC_CACHE_VAL(g77_cv_sys_f2clongint,
160 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
161 AC_EGREP_CPP(F2C_LONGINT=long int,
163 #define FFECOM_DETERMINE_TYPES 1
165 #if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
167 #elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
168 F2C_LONGINT=long long int
170 # error "Cannot find a suitable type for F2C_LONGINT"
173 g77_cv_sys_f2clongint="long int",)
175 if test "$g77_cv_sys_f2clongint" = ""; then
176 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
177 AC_EGREP_CPP(F2C_LONGINT=long long int,
179 #define FFECOM_DETERMINE_TYPES 1
181 #if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
183 #elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
184 F2C_LONGINT=long long int
186 # error "Cannot find a suitable type for F2C_LONGINT"
189 g77_cv_sys_f2clongint="long long int",)
191 if test "$g77_cv_sys_f2clongint" = ""; then
193 AC_MSG_ERROR([Can't determine type for f2c long int; config.log may help.])
196 AC_MSG_RESULT($g77_cv_sys_f2clongint)
197 F2C_LONGINT=$g77_cv_sys_f2clongint
198 AC_SUBST(F2C_LONGINT)
201 # avoid confusion in case the `makefile's from the f2c distribution have
203 test -f libF77/makefile && mv libF77/makefile libF77/makefile.ori
204 test -f libI77/makefile && mv libI77/makefile libI77/makefile.ori
205 test -f libU77/makefile && mv libU77/makefile libU77/makefile.ori
207 # Get the version trigger filename from the toplevel
208 if [[ "${with_gcc_version_trigger+set}" = set ]]; then
209 gcc_version_trigger=$with_gcc_version_trigger
210 gcc_version=`sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/' < ${gcc_version_trigger}`
216 AC_SUBST(gcc_version)
217 AC_SUBST(gcc_version_trigger)
219 AC_SUBST(target_alias)
220 AC_CONFIG_SUBDIRS(libU77 libI77 libF77)
221 # Do Makefile first since g2c.h depends on it and shouldn't get an
222 # earlier timestamp. Of course, it does when the multilib gunk below
223 # edits Makefile, sigh; see additional touch below.
224 AC_OUTPUT(Makefile g2c.h:g2c.hin,
225 [test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
226 if test -n "$CONFIG_FILES"; then
227 if test -n "${with_target_subdir}"; then
228 # FIXME: We shouldn't need to set ac_file
230 . ${topsrcdir}/config-ml.in
231 touch g2c.h # to keep it more recent than Makefile
237 with_target_subdir=${with_target_subdir}
238 with_multisubdir=${with_multisubdir}
239 ac_configure_args="--enable-multilib ${ac_configure_args}"
240 CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
241 topsrcdir=${topsrcdir}
246 dnl comment-start: "dnl "
248 dnl comment-start-skip: "\\bdnl\\b\\s *"