libf2c/configure.in

   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).
   4 #
   5 #This file is part of GNU Fortran.
   6 #
   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)
  10 #any later version.
  11 #
  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.
  16 #
  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
  20 #02111-1307, USA.
  21
  22 AC_PREREQ(2.13)
  23 AC_INIT(libF77/Version.c)
  24
  25 if test "${srcdir}" = "."  ; then
  26   if test "${with_target_subdir}" != "." ; then
  27     topsrcdir=${with_multisrctop}../..
  28   else
  29     topsrcdir=${with_multisrctop}..
  30   fi
  31 else
  32   topsrcdir=${srcdir}/..
  33 fi
  34 dnl This is needed for a multilibbed build in the source tree so
  35 dnl that install-sh and config.sub get found.
  36 AC_CONFIG_AUX_DIR($topsrcdir)
  37
  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.
  42 compiler_name=f771
  43 rm -f skip-this-dir
  44 AC_MSG_CHECKING(if compiler $compiler_name has been built)
  45 AC_CACHE_VAL(g77_cv_compiler_exists,
  46 [g77_cv_compiler_exists=yes
  47 if test -n "$r"; then
  48   if test -d "$r"/gcc; then
  49     if test -f "$r"/gcc/$compiler_name \
  50        || test -f "$r"/gcc/$compiler_name.exe; then
  51       true
  52     else
  53       g77_cv_compiler_exists=no
  54       echo "rm -f config.cache config.log multilib.out" > skip-this-dir
  55     fi
  56   fi
  57 fi
  58 ])
  59 AC_MSG_RESULT($g77_cv_compiler_exists)
  60 if test x$g77_cv_compiler_exists = xno
  61 then
  62   rm -f Makefile conftest* confdefs* core
  63   exit 0
  64 fi
  65
  66 dnl Checks for programs.
  67 # For g77 we'll set CC to point at the built gcc, but this will get it into
  68 # the makefiles
  69 AC_PROG_CC
  70
  71 dnl These should be inherited in the recursive make, but ensure they are
  72 dnl defined:
  73 test "$AR" || AR=ar
  74 AC_SUBST(AR)
  75 if test "$RANLIB"; then :
  76   AC_SUBST(RANLIB)
  77 else
  78   AC_PROG_RANLIB
  79 fi
  80 AC_PROG_INSTALL
  81 AC_PROG_MAKE_SET
  82
  83 dnl Checks for header files.
  84 # Sanity check for the cross-compilation case:
  85 AC_CHECK_HEADER(stdio.h,:,
  86   [AC_MSG_ERROR([Can't find stdio.h.
  87 You must have a usable C system for the target already installed, at least
  88 including headers and, preferably, the library, before you can configure
  89 the G77 runtime system.  If necessary, install gcc now with \`LANGUAGES=c',
  90 then the target library, then build with \`LANGUAGES=f77'.])])
  91
  92 # We have to firkle with the info in hconfig.h to figure out suitable types
  93 # (via com.h).  proj.h and com.h are in gcc/f/, config.h which they need
  94 # is in gcc/ and the config files are in gcc/config/.
  95 AC_MSG_CHECKING(f2c integer type)
  96 # Set this back later below!
  97 late_ac_cpp=$ac_cpp
  98 late_cflags=$CFLAGS
  99 extra_includes="-I$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 $extra_includes"
 101
 102 # The AC_EGREP_CPPs below have been known to fail when the header
 103 # path is wrong after things have been moved about; the cpp error status
 104 # counts for nothing.  First check that there aren't any errors from
 105 # the headers.
 106 CFLAGS="$CFLAGS -DHAVE_CONFIG_H -DIN_GCC $extra_includes"
 107 AC_TRY_COMPILE([#include "proj.h"
 108 #define FFECOM_DETERMINE_TYPES 1
 109 #include "com.h"],,,
 110 AC_MSG_ERROR([Can't run check for integer sizes -- see config.log]))
 111 CFLAGS=$late_cflags
 112
 113 AC_CACHE_VAL(g77_cv_sys_f2cinteger,
 114 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
 115 AC_EGREP_CPP(F2C_INTEGER=long int,
 116 [#include "proj.h"
 117 #define FFECOM_DETERMINE_TYPES 1
 118 #include "com.h"
 119 #if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
 120 F2C_INTEGER=long int
 121 #elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
 122 F2C_INTEGER=int
 123 #else
 124 #  error "Cannot find a suitable type for F2C_INTEGER"
 125 #endif
 126 ],
 127  g77_cv_sys_f2cinteger="long int",)
 128 if test "$g77_cv_sys_f2cinteger" = ""; then
 129 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
 130   AC_EGREP_CPP(F2C_INTEGER=int,
 131 [#include "proj.h"
 132 #define FFECOM_DETERMINE_TYPES 1
 133 #include "com.h"
 134 #if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG
 135 F2C_INTEGER=long int
 136 #elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT
 137 F2C_INTEGER=int
 138 #else
 139 #  error "Cannot find a suitable type for F2C_INTEGER"
 140 #endif
 141 ],
 142    g77_cv_sys_f2cinteger=int,)
 143 fi
 144 if test "$g77_cv_sys_f2cinteger" = ""; then
 145   AC_MSG_RESULT("")
 146   AC_MSG_ERROR([Can't determine type for f2c integer; config.log may help.])
 147 fi
 148 )
 149 AC_MSG_RESULT($g77_cv_sys_f2cinteger)
 150 F2C_INTEGER=$g77_cv_sys_f2cinteger
 151 AC_SUBST(F2C_INTEGER)
 152
 153 AC_MSG_CHECKING(f2c long int type)
 154 AC_CACHE_VAL(g77_cv_sys_f2clongint,
 155 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
 156 AC_EGREP_CPP(F2C_LONGINT=long int,
 157 [#include "proj.h"
 158 #define FFECOM_DETERMINE_TYPES 1
 159 #include "com.h"
 160 #if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
 161 F2C_LONGINT=long int
 162 #elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
 163 F2C_LONGINT=long long int
 164 #else
 165 #  error "Cannot find a suitable type for F2C_LONGINT"
 166 #endif
 167 ],
 168  g77_cv_sys_f2clongint="long int",)
 169
 170 if test "$g77_cv_sys_f2clongint" = ""; then
 171 echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC
 172   AC_EGREP_CPP(F2C_LONGINT=long long int,
 173 [#include "proj.h"
 174 #define FFECOM_DETERMINE_TYPES 1
 175 #include "com.h"
 176 #if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG
 177 F2C_LONGINT=long int
 178 #elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG
 179 F2C_LONGINT=long long int
 180 #else
 181 #  error "Cannot find a suitable type for F2C_LONGINT"
 182 #endif
 183 ],
 184    g77_cv_sys_f2clongint="long long int",)
 185 fi
 186 if test "$g77_cv_sys_f2clongint" = ""; then
 187   AC_MSG_RESULT("")
 188   AC_MSG_ERROR([Can't determine type for f2c long int; config.log may help.])
 189 fi
 190 )
 191 AC_MSG_RESULT($g77_cv_sys_f2clongint)
 192 F2C_LONGINT=$g77_cv_sys_f2clongint
 193 AC_SUBST(F2C_LONGINT)
 194 ac_cpp=$late_ac_cpp
 195
 196 # avoid confusion in case the `makefile's from the f2c distribution have
 197 # got put here
 198 test -f libF77/makefile && mv libF77/makefile  libF77/makefile.ori
 199 test -f libI77/makefile && mv libI77/makefile  libI77/makefile.ori
 200 test -f libU77/makefile && mv libU77/makefile  libU77/makefile.ori
 201
 202 # Get the version trigger filename from the toplevel
 203 if [[ "${with_gcc_version_trigger+set}" = set ]]; then
 204         gcc_version_trigger=$with_gcc_version_trigger
 205         gcc_version=`sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/' < ${gcc_version_trigger}`
 206 else
 207         gcc_version_trigger=
 208         gcc_version=UNKNOWN
 209 fi
 210
 211 AC_SUBST(gcc_version)
 212 AC_SUBST(gcc_version_trigger)
 213 AC_CANONICAL_SYSTEM
 214 AC_SUBST(target_alias)
 215 AC_CONFIG_SUBDIRS(libU77 libI77 libF77)
 216 # Do Makefile first since g2c.h depends on it and shouldn't get an
 217 # earlier timestamp.  Of course, it does when the multilib gunk below
 218 # edits Makefile, sigh; see additional touch below.
 219 AC_OUTPUT(Makefile g2c.h:g2c.hin,
 220  [test -z "$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
 224     ac_file=Makefile
 225     . ${topsrcdir}/config-ml.in
 226     touch g2c.h   # to keep it more recent than Makefile
 227   fi
 228 fi],
 229 srcdir=${srcdir}
 230 host=${host}
 231 target=${target}
 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}
 237 )
 238
 239
 240 dnl Local Variables:
 241 dnl comment-start: "dnl "
 242 dnl comment-end: ""
 243 dnl comment-start-skip: "\\bdnl\\b\\s *"
 244 dnl End: