povray-ax_boost_base.m4

   1 # ===========================================================================
   2 #       http://www.gnu.org/software/autoconf-archive/ax_boost_base.html
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_BOOST_BASE([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
   8 #
   9 # DESCRIPTION
  10 #
  11 #   Test for the Boost C++ libraries of a particular version (or newer)
  12 #
  13 #   If no path to the installed boost library is given the macro searchs
  14 #   under /usr, /usr/local, /opt and /opt/local and evaluates the
  15 #   $BOOST_ROOT environment variable. Further documentation is available at
  16 #   <http://randspringer.de/boost/index.html>.
  17 #
  18 #   This macro calls:
  19 #
  20 #     AC_SUBST(BOOST_CPPFLAGS) / AC_SUBST(BOOST_LDFLAGS)
  21 #
  22 #   And sets:
  23 #
  24 #     HAVE_BOOST
  25 #
  26 # LICENSE
  27 #
  28 #   Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
  29 #   Copyright (c) 2009 Peter Adolphs
  30 #
  31 #   Copying and distribution of this file, with or without modification, are
  32 #   permitted in any medium without royalty provided the copyright notice
  33 #   and this notice are preserved. This file is offered as-is, without any
  34 #   warranty.
  35
  36 #serial 20
  37
  38 AC_DEFUN([AX_BOOST_BASE],
  39 [
  40 AC_ARG_WITH([boost],
  41   [AS_HELP_STRING([--with-boost@<:@=ARG@:>@],
  42     [use Boost library from a standard location (ARG=yes),
  43      from the specified location (ARG=<path>),
  44      or disable it (ARG=no)
  45      @<:@ARG=yes@:>@ ])],
  46     [
  47     if test "$withval" = "no"; then
  48         want_boost="no"
  49     elif test "$withval" = "yes"; then
  50         want_boost="yes"
  51         ac_boost_path=""
  52     else
  53         want_boost="yes"
  54         ac_boost_path="$withval"
  55     fi
  56     ],
  57     [want_boost="yes"])
  58
  59
  60 AC_ARG_WITH([boost-libdir],
  61         AS_HELP_STRING([--with-boost-libdir=LIB_DIR],
  62         [Force given directory for boost libraries. Note that this will override library path detection, so use this parameter only if default library detection fails and you know exactly where your boost libraries are located.]),
  63         [
  64         if test -d "$withval"
  65         then
  66                 ac_boost_lib_path="$withval"
  67         else
  68                 AC_MSG_ERROR(--with-boost-libdir expected directory name)
  69         fi
  70         ],
  71         [ac_boost_lib_path=""]
  72 )
  73
  74 if test "x$want_boost" = "xyes"; then
  75     boost_lib_version_req=ifelse([$1], ,1.20.0,$1)
  76     boost_lib_version_req_shorten=`expr $boost_lib_version_req : '\([[0-9]]*\.[[0-9]]*\)'`
  77     boost_lib_version_req_major=`expr $boost_lib_version_req : '\([[0-9]]*\)'`
  78     boost_lib_version_req_minor=`expr $boost_lib_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
  79     boost_lib_version_req_sub_minor=`expr $boost_lib_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
  80     if test "x$boost_lib_version_req_sub_minor" = "x" ; then
  81         boost_lib_version_req_sub_minor="0"
  82         fi
  83     WANT_BOOST_VERSION=`expr $boost_lib_version_req_major \* 100000 \+  $boost_lib_version_req_minor \* 100 \+ $boost_lib_version_req_sub_minor`
  84     AC_MSG_CHECKING(for boostlib >= $boost_lib_version_req)
  85     succeeded=no
  86
  87     dnl On 64-bit systems check for system libraries in both lib64 and lib.
  88     dnl The former is specified by FHS, but e.g. Debian does not adhere to
  89     dnl this (as it rises problems for generic multi-arch support).
  90     dnl The last entry in the list is chosen by default when no libraries
  91     dnl are found, e.g. when only header-only libraries are installed!
  92     libsubdirs="lib"
  93     ax_arch=`uname -m`
  94     if test $ax_arch = x86_64 -o $ax_arch = ppc64 -o $ax_arch = s390x -o $ax_arch = sparc64; then
  95         libsubdirs="lib64 lib lib64"
  96     fi
  97
  98     dnl first we check the system location for boost libraries
  99     dnl this location ist chosen if boost libraries are installed with the --layout=system option
 100     dnl or if you install boost with RPM
 101     if test "$ac_boost_path" != ""; then
 102         BOOST_CPPFLAGS="-I$ac_boost_path/include"
 103         for ac_boost_path_tmp in $libsubdirs; do
 104                 if test -d "$ac_boost_path"/"$ac_boost_path_tmp" ; then
 105                         BOOST_LDFLAGS="-L$ac_boost_path/$ac_boost_path_tmp"
 106                         break
 107                 fi
 108         done
 109     elif test "$cross_compiling" != yes; then
 110         for ac_boost_path_tmp in /usr /usr/local /opt /opt/local ; do
 111             if test -d "$ac_boost_path_tmp/include/boost" && test -r "$ac_boost_path_tmp/include/boost"; then
 112                 for libsubdir in $libsubdirs ; do
 113                     if ls "$ac_boost_path_tmp/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
 114                 done
 115                 BOOST_LDFLAGS="-L$ac_boost_path_tmp/$libsubdir"
 116                 BOOST_CPPFLAGS="-I$ac_boost_path_tmp/include"
 117                 break;
 118             fi
 119         done
 120     fi
 121
 122     dnl overwrite ld flags if we have required special directory with
 123     dnl --with-boost-libdir parameter
 124     if test "$ac_boost_lib_path" != ""; then
 125        BOOST_LDFLAGS="-L$ac_boost_lib_path"
 126     fi
 127
 128     CPPFLAGS_SAVED="$CPPFLAGS"
 129     CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
 130     export CPPFLAGS
 131
 132     LDFLAGS_SAVED="$LDFLAGS"
 133     LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
 134     export LDFLAGS
 135
 136     AC_REQUIRE([AC_PROG_CXX])
 137     AC_LANG_PUSH(C++)
 138         AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 139     @%:@include <boost/version.hpp>
 140     ]], [[
 141     #if BOOST_VERSION >= $WANT_BOOST_VERSION
 142     // Everything is okay
 143     #else
 144     #  error Boost version is too old
 145     #endif
 146     ]])],[
 147         AC_MSG_RESULT(yes)
 148     succeeded=yes
 149     found_system=yes
 150         ],[
 151         ])
 152     AC_LANG_POP([C++])
 153
 154
 155
 156     dnl if we found no boost with system layout we search for boost libraries
 157     dnl built and installed without the --layout=system option or for a staged(not installed) version
 158     if test "x$succeeded" != "xyes"; then
 159         _version=0
 160         if test "$ac_boost_path" != ""; then
 161             if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
 162                 for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
 163                     _version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
 164                     V_CHECK=`expr $_version_tmp \> $_version`
 165                     if test "$V_CHECK" = "1" ; then
 166                         _version=$_version_tmp
 167                     fi
 168                     VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
 169                     BOOST_CPPFLAGS="-I$ac_boost_path/include/boost-$VERSION_UNDERSCORE"
 170                 done
 171             fi
 172         else
 173             if test "$cross_compiling" != yes; then
 174                 for ac_boost_path in /usr /usr/local /opt /opt/local ; do
 175                     if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
 176                         for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
 177                             _version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
 178                             V_CHECK=`expr $_version_tmp \> $_version`
 179                             if test "$V_CHECK" = "1" ; then
 180                                 _version=$_version_tmp
 181                                 best_path=$ac_boost_path
 182                             fi
 183                         done
 184                     fi
 185                 done
 186
 187                 VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
 188                 BOOST_CPPFLAGS="-I$best_path/include/boost-$VERSION_UNDERSCORE"
 189                 if test "$ac_boost_lib_path" = ""; then
 190                     for libsubdir in $libsubdirs ; do
 191                         if ls "$best_path/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
 192                     done
 193                     BOOST_LDFLAGS="-L$best_path/$libsubdir"
 194                 fi
 195             fi
 196
 197             if test "x$BOOST_ROOT" != "x"; then
 198                 for libsubdir in $libsubdirs ; do
 199                     if ls "$BOOST_ROOT/stage/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
 200                 done
 201                 if test -d "$BOOST_ROOT" && test -r "$BOOST_ROOT" && test -d "$BOOST_ROOT/stage/$libsubdir" && test -r "$BOOST_ROOT/stage/$libsubdir"; then
 202                     version_dir=`expr //$BOOST_ROOT : '.*/\(.*\)'`
 203                     stage_version=`echo $version_dir | sed 's/boost_//' | sed 's/_/./g'`
 204                         stage_version_shorten=`expr $stage_version : '\([[0-9]]*\.[[0-9]]*\)'`
 205                     V_CHECK=`expr $stage_version_shorten \>\= $_version`
 206                     if test "$V_CHECK" = "1" -a "$ac_boost_lib_path" = "" ; then
 207                         AC_MSG_NOTICE(We will use a staged boost library from $BOOST_ROOT)
 208                         BOOST_CPPFLAGS="-I$BOOST_ROOT"
 209                         BOOST_LDFLAGS="-L$BOOST_ROOT/stage/$libsubdir"
 210                     fi
 211                 fi
 212             fi
 213         fi
 214
 215         CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
 216         export CPPFLAGS
 217         LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
 218         export LDFLAGS
 219
 220         AC_LANG_PUSH(C++)
 221             AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 222         @%:@include <boost/version.hpp>
 223         ]], [[
 224         #if BOOST_VERSION >= $WANT_BOOST_VERSION
 225         // Everything is okay
 226         #else
 227         #  error Boost version is too old
 228         #endif
 229         ]])],[
 230             AC_MSG_RESULT(yes)
 231         succeeded=yes
 232         found_system=yes
 233             ],[
 234             ])
 235         AC_LANG_POP([C++])
 236     fi
 237
 238     if test "$succeeded" != "yes" ; then
 239         if test "$_version" = "0" ; then
 240             AC_MSG_NOTICE([[We could not detect the boost libraries (version $boost_lib_version_req_shorten or higher). If you have a staged boost library (still not installed) please specify \$BOOST_ROOT in your environment and do not give a PATH to --with-boost option.  If you are sure you have boost installed, then check your version number looking in <boost/version.hpp>. See http://randspringer.de/boost for more documentation.]])
 241         else
 242             AC_MSG_NOTICE([Your boost libraries seems to old (version $_version).])
 243         fi
 244         # execute ACTION-IF-NOT-FOUND (if present):
 245         ifelse([$3], , :, [$3])
 246     else
 247         AC_SUBST(BOOST_CPPFLAGS)
 248         AC_SUBST(BOOST_LDFLAGS)
 249         AC_DEFINE(HAVE_BOOST,,[define if the Boost library is available])
 250         # execute ACTION-IF-FOUND (if present):
 251         ifelse([$2], , :, [$2])
 252     fi
 253
 254     CPPFLAGS="$CPPFLAGS_SAVED"
 255     LDFLAGS="$LDFLAGS_SAVED"
 256 fi
 257
 258 ])