libffi/aclocal.m4

   1 dnl aclocal.m4 generated automatically by aclocal 1.4
   2
   3 dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
   4 dnl This file is free software; the Free Software Foundation
   5 dnl gives unlimited permission to copy and/or distribute it,
   6 dnl with or without modifications, as long as this notice is preserved.
   7
   8 dnl This program is distributed in the hope that it will be useful,
   9 dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
  10 dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
  11 dnl PARTICULAR PURPOSE.
  12
  13 sinclude(../libtool.m4)
  14 dnl The lines below arrange for aclocal not to bring libtool.m4
  15 dnl AC_PROG_LIBTOOL into aclocal.m4, while still arranging for automake
  16 dnl to add a definition of LIBTOOL to Makefile.in.
  17 ifelse(yes,no,[
  18 AC_DEFUN([AC_PROG_LIBTOOL],)
  19 AC_DEFUN([AM_PROG_LIBTOOL],)
  20 AC_SUBST(LIBTOOL)
  21 ])
  22
  23 # mmap(2) blacklisting.  Some platforms provide the mmap library routine
  24 # but don't support all of the features we need from it.
  25 AC_DEFUN([AC_FUNC_MMAP_BLACKLIST],
  26 [if test $ac_cv_header_sys_mman_h != yes \
  27  || test $ac_cv_func_mmap != yes; then
  28    ac_cv_func_mmap_file=no
  29    ac_cv_func_mmap_dev_zero=no
  30    ac_cv_func_mmap_anon=no
  31 else
  32    AC_CACHE_CHECK([whether read-only mmap of a plain file works],
  33   ac_cv_func_mmap_file,
  34   [# Add a system to this blacklist if
  35    # mmap(0, stat_size, PROT_READ, MAP_PRIVATE, fd, 0) doesn't return a
  36    # memory area containing the same data that you'd get if you applied
  37    # read() to the same fd.  The only system known to have a problem here
  38    # is VMS, where text files have record structure.
  39    case "$host_os" in
  40      vms* | ultrix*)
  41         ac_cv_func_mmap_file=no ;;
  42      *)
  43         ac_cv_func_mmap_file=yes;;
  44    esac])
  45    AC_CACHE_CHECK([whether mmap from /dev/zero works],
  46   ac_cv_func_mmap_dev_zero,
  47   [# Add a system to this blacklist if it has mmap() but /dev/zero
  48    # does not exist, or if mmapping /dev/zero does not give anonymous
  49    # zeroed pages with both the following properties:
  50    # 1. If you map N consecutive pages in with one call, and then
  51    #    unmap any subset of those pages, the pages that were not
  52    #    explicitly unmapped remain accessible.
  53    # 2. If you map two adjacent blocks of memory and then unmap them
  54    #    both at once, they must both go away.
  55    # Systems known to be in this category are Windows (all variants),
  56    # VMS, and Darwin.
  57    case "$host_os" in
  58      vms* | cygwin* | pe | mingw* | darwin* | ultrix* | hpux10* | hpux11.00)
  59         ac_cv_func_mmap_dev_zero=no ;;
  60      *)
  61         ac_cv_func_mmap_dev_zero=yes;;
  62    esac])
  63
  64    # Unlike /dev/zero, the MAP_ANON(YMOUS) defines can be probed for.
  65    AC_CACHE_CHECK([for MAP_ANON(YMOUS)], ac_cv_decl_map_anon,
  66     [AC_TRY_COMPILE(
  67 [#include <sys/types.h>
  68 #include <sys/mman.h>
  69 #include <unistd.h>
  70
  71 #ifndef MAP_ANONYMOUS
  72 #define MAP_ANONYMOUS MAP_ANON
  73 #endif
  74 ],
  75 [int n = MAP_ANONYMOUS;],
  76     ac_cv_decl_map_anon=yes,
  77     ac_cv_decl_map_anon=no)])
  78
  79    if test $ac_cv_decl_map_anon = no; then
  80      ac_cv_func_mmap_anon=no
  81    else
  82      AC_CACHE_CHECK([whether mmap with MAP_ANON(YMOUS) works],
  83      ac_cv_func_mmap_anon,
  84   [# Add a system to this blacklist if it has mmap() and MAP_ANON or
  85    # MAP_ANONYMOUS, but using mmap(..., MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
  86    # doesn't give anonymous zeroed pages with the same properties listed
  87    # above for use of /dev/zero.
  88    # Systems known to be in this category are Windows, VMS, and SCO Unix.
  89    case "$host_os" in
  90      vms* | cygwin* | pe | mingw* | sco* | udk* )
  91         ac_cv_func_mmap_anon=no ;;
  92      *)
  93         ac_cv_func_mmap_anon=yes;;
  94    esac])
  95    fi
  96 fi
  97
  98 if test $ac_cv_func_mmap_file = yes; then
  99   AC_DEFINE(HAVE_MMAP_FILE, 1,
 100             [Define if read-only mmap of a plain file works.])
 101 fi
 102 if test $ac_cv_func_mmap_dev_zero = yes; then
 103   AC_DEFINE(HAVE_MMAP_DEV_ZERO, 1,
 104             [Define if mmap of /dev/zero works.])
 105 fi
 106 if test $ac_cv_func_mmap_anon = yes; then
 107   AC_DEFINE(HAVE_MMAP_ANON, 1,
 108             [Define if mmap with MAP_ANON(YMOUS) works.])
 109 fi
 110 ])
 111
 112 sinclude(../config/accross.m4)
 113
 114 # Like AC_CONFIG_HEADER, but automatically create stamp file.
 115
 116 AC_DEFUN(AM_CONFIG_HEADER,
 117 [AC_PREREQ([2.12])
 118 AC_CONFIG_HEADER([$1])
 119 dnl When config.status generates a header, we must update the stamp-h file.
 120 dnl This file resides in the same directory as the config header
 121 dnl that is generated.  We must strip everything past the first ":",
 122 dnl and everything past the last "/".
 123 AC_OUTPUT_COMMANDS(changequote(<<,>>)dnl
 124 ifelse(patsubst(<<$1>>, <<[^ ]>>, <<>>), <<>>,
 125 <<test -z "<<$>>CONFIG_HEADERS" || echo timestamp > patsubst(<<$1>>, <<^\([^:]*/\)?.*>>, <<\1>>)stamp-h<<>>dnl>>,
 126 <<am_indx=1
 127 for am_file in <<$1>>; do
 128   case " <<$>>CONFIG_HEADERS " in
 129   *" <<$>>am_file "*<<)>>
 130     echo timestamp > `echo <<$>>am_file | sed -e 's%:.*%%' -e 's%[^/]*$%%'`stamp-h$am_indx
 131     ;;
 132   esac
 133   am_indx=`expr "<<$>>am_indx" + 1`
 134 done<<>>dnl>>)
 135 changequote([,]))])
 136
 137 # Do all the work for Automake.  This macro actually does too much --
 138 # some checks are only needed if your package does certain things.
 139 # But this isn't really a big deal.
 140
 141 # serial 1
 142
 143 dnl Usage:
 144 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
 145
 146 AC_DEFUN(AM_INIT_AUTOMAKE,
 147 [AC_REQUIRE([AC_PROG_INSTALL])
 148 PACKAGE=[$1]
 149 AC_SUBST(PACKAGE)
 150 VERSION=[$2]
 151 AC_SUBST(VERSION)
 152 dnl test to see if srcdir already configured
 153 if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
 154   AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
 155 fi
 156 ifelse([$3],,
 157 AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
 158 AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
 159 AC_REQUIRE([AM_SANITY_CHECK])
 160 AC_REQUIRE([AC_ARG_PROGRAM])
 161 dnl FIXME This is truly gross.
 162 missing_dir=`cd $ac_aux_dir && pwd`
 163 AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
 164 AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
 165 AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
 166 AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
 167 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
 168 AC_REQUIRE([AC_PROG_MAKE_SET])])
 169
 170 #
 171 # Check to make sure that the build environment is sane.
 172 #
 173
 174 AC_DEFUN(AM_SANITY_CHECK,
 175 [AC_MSG_CHECKING([whether build environment is sane])
 176 # Just in case
 177 sleep 1
 178 echo timestamp > conftestfile
 179 # Do `set' in a subshell so we don't clobber the current shell's
 180 # arguments.  Must try -L first in case configure is actually a
 181 # symlink; some systems play weird games with the mod time of symlinks
 182 # (eg FreeBSD returns the mod time of the symlink's containing
 183 # directory).
 184 if (
 185    set X `ls -Lt $srcdir/configure conftestfile 2> /dev/null`
 186    if test "[$]*" = "X"; then
 187       # -L didn't work.
 188       set X `ls -t $srcdir/configure conftestfile`
 189    fi
 190    if test "[$]*" != "X $srcdir/configure conftestfile" \
 191       && test "[$]*" != "X conftestfile $srcdir/configure"; then
 192
 193       # If neither matched, then we have a broken ls.  This can happen
 194       # if, for instance, CONFIG_SHELL is bash and it inherits a
 195       # broken ls alias from the environment.  This has actually
 196       # happened.  Such a system could not be considered "sane".
 197       AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
 198 alias in your environment])
 199    fi
 200
 201    test "[$]2" = conftestfile
 202    )
 203 then
 204    # Ok.
 205    :
 206 else
 207    AC_MSG_ERROR([newly created file is older than distributed files!
 208 Check your system clock])
 209 fi
 210 rm -f conftest*
 211 AC_MSG_RESULT(yes)])
 212
 213 dnl AM_MISSING_PROG(NAME, PROGRAM, DIRECTORY)
 214 dnl The program must properly implement --version.
 215 AC_DEFUN(AM_MISSING_PROG,
 216 [AC_MSG_CHECKING(for working $2)
 217 # Run test in a subshell; some versions of sh will print an error if
 218 # an executable is not found, even if stderr is redirected.
 219 # Redirect stdin to placate older versions of autoconf.  Sigh.
 220 if ($2 --version) < /dev/null > /dev/null 2>&1; then
 221    $1=$2
 222    AC_MSG_RESULT(found)
 223 else
 224    $1="$3/missing $2"
 225    AC_MSG_RESULT(missing)
 226 fi
 227 AC_SUBST($1)])
 228
 229 # Add --enable-maintainer-mode option to configure.
 230 # From Jim Meyering
 231
 232 # serial 1
 233
 234 AC_DEFUN(AM_MAINTAINER_MODE,
 235 [AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
 236   dnl maintainer-mode is disabled by default
 237   AC_ARG_ENABLE(maintainer-mode,
 238 [  --enable-maintainer-mode enable make rules and dependencies not useful
 239                           (and sometimes confusing) to the casual installer],
 240       USE_MAINTAINER_MODE=$enableval,
 241       USE_MAINTAINER_MODE=no)
 242   AC_MSG_RESULT($USE_MAINTAINER_MODE)
 243   AM_CONDITIONAL(MAINTAINER_MODE, test $USE_MAINTAINER_MODE = yes)
 244   MAINT=$MAINTAINER_MODE_TRUE
 245   AC_SUBST(MAINT)dnl
 246 ]
 247 )
 248
 249 # Define a conditional.
 250
 251 AC_DEFUN(AM_CONDITIONAL,
 252 [AC_SUBST($1_TRUE)
 253 AC_SUBST($1_FALSE)
 254 if $2; then
 255   $1_TRUE=
 256   $1_FALSE='#'
 257 else
 258   $1_TRUE='#'
 259   $1_FALSE=
 260 fi])
 261