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dnl @synopsis AX_BOOST([MINIMUM-VERSION])

dnl

dnl Test for the Boost C++ libraries of a particular version (or newer)

dnl

dnl If no path to the installed boost library is given the macro

dnl searchs under /usr, /usr/local, and /opt, and evaluates the

dnl $BOOST_ROOT environment variable. Further documentation is

dnl available at <http://randspringer.de/boost/index.html>.

dnl

dnl This macro calls:

dnl

dnl   AC_SUBST(BOOST_CPPFLAGS) / AC_SUBST(BOOST_LDFLAGS)

dnl

dnl And sets:

dnl

dnl   HAVE_BOOST

dnl

dnl @category InstalledPackages

dnl @category Cxx

dnl @author Thomas Porschberg <thomas@randspringer.de>

dnl @version 2006-06-15

dnl @license AllPermissive

 

AC_DEFUN([AX_BOOST_BASE],

[

AC_ARG_WITH([boost],

        AS_HELP_STRING([--with-boost@<:@=DIR@:>@], [use boost (default is Yes) - it is possible to specify the root directory for boost (optional)]),

        [

    if test "$withval" = "no"; then

                want_boost="no"

    elif test "$withval" = "yes"; then

        want_boost="yes"

        ac_boost_path=""

    else

            want_boost="yes"

        ac_boost_path="$withval"

        fi

    ],

    [want_boost="yes"])

 

if test "x$want_boost" = "xyes"; then

        boost_lib_version_req=ifelse([$1], ,1.20.0,$1)

        boost_lib_version_req_shorten=`expr $boost_lib_version_req : '\([[0-9]]*\.[[0-9]]*\)'`

        boost_lib_version_req_major=`expr $boost_lib_version_req : '\([[0-9]]*\)'`

        boost_lib_version_req_minor=`expr $boost_lib_version_req : '[[0-9]]*\.\([[0-9]]*\)'`

        boost_lib_version_req_sub_minor=`expr $boost_lib_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`

        if test "x$boost_lib_version_req_sub_minor" = "x" ; then

                boost_lib_version_req_sub_minor="0"

        fi

        WANT_BOOST_VERSION=`expr $boost_lib_version_req_major \* 100000 \+  $boost_lib_version_req_minor \* 100 \+ $boost_lib_version_req_sub_minor`

        AC_MSG_CHECKING(for boostlib >= $boost_lib_version_req)

        succeeded=no

 

        dnl first we check the system location for boost libraries

        dnl this location ist chosen if boost libraries are installed with the --layout=system option

        dnl or if you install boost with RPM

        if test "$ac_boost_path" != ""; then

                BOOST_LDFLAGS="-L$ac_boost_path/lib"

                BOOST_CPPFLAGS="-I$ac_boost_path/include"

        else

                for ac_boost_path_tmp in /usr /usr/local /opt ; do

                        if test -d "$ac_boost_path_tmp/include/boost" && test -r "$ac_boost_path_tmp/include/boost"; then

                                BOOST_LDFLAGS="-L$ac_boost_path_tmp/lib"

                                BOOST_CPPFLAGS="-I$ac_boost_path_tmp/include"

                                break;

                        fi

                done

        fi

 

        CPPFLAGS_SAVED="$CPPFLAGS"

        CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"

        export CPPFLAGS

 

        LDFLAGS_SAVED="$LDFLAGS"

        LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"

        export LDFLAGS

 

        AC_LANG_PUSH(C++)

        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[

        @%:@include <boost/version.hpp>

        ]], [[

        #if BOOST_VERSION >= $WANT_BOOST_VERSION

        // Everything is okay

        #else

        #  error Boost version is too old

        #endif

        ]])],[

        AC_MSG_RESULT(yes)

        succeeded=yes

        found_system=yes

        ],[

        ])

        AC_LANG_POP([C++])

 

 

 

        dnl if we found no boost with system layout we search for boost libraries

        dnl built and installed without the --layout=system option or for a staged(not installed) version

        if test "x$succeeded" != "xyes"; then

                _version=0

                if test "$ac_boost_path" != ""; then

                        BOOST_LDFLAGS="-L$ac_boost_path/lib"

                        if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then

                                for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do

                                        _version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`

                                        V_CHECK=`expr $_version_tmp \> $_version`

                                        if test "$V_CHECK" = "1" ; then

                                                _version=$_version_tmp

                                        fi

                                        VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`

                                        BOOST_CPPFLAGS="-I$ac_boost_path/include/boost-$VERSION_UNDERSCORE"

                                done

                        fi

                else

                        for ac_boost_path in /usr /usr/local /opt ; do

                                if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then

                                        for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do

                                                _version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`

                                                V_CHECK=`expr $_version_tmp \> $_version`

                                                if test "$V_CHECK" = "1" ; then

                                                        _version=$_version_tmp

                                                        best_path=$ac_boost_path

                                                fi

                                        done

                                fi

                        done

 

                        VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`

                        BOOST_CPPFLAGS="-I$best_path/include/boost-$VERSION_UNDERSCORE"

                        BOOST_LDFLAGS="-L$best_path/lib"

 

                        if test "x$BOOST_ROOT" != "x"; then

                                if test -d "$BOOST_ROOT" && test -r "$BOOST_ROOT" && test -d "$BOOST_ROOT/stage/lib" && test -r "$BOOST_ROOT/stage/lib"; then

                                        version_dir=`expr //$BOOST_ROOT : '.*/\(.*\)'`

                                        stage_version=`echo $version_dir | sed 's/boost_//' | sed 's/_/./g'`

                                        stage_version_shorten=`expr $stage_version : '\([[0-9]]*\.[[0-9]]*\)'`

                                        V_CHECK=`expr $stage_version_shorten \>\= $_version`

                                        if test "$V_CHECK" = "1" ; then

                                                AC_MSG_NOTICE(We will use a staged boost library from $BOOST_ROOT)

                                                BOOST_CPPFLAGS="-I$BOOST_ROOT"

                                                BOOST_LDFLAGS="-L$BOOST_ROOT/stage/lib"

                                        fi

                                fi

                        fi

                fi

 

                CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"

                export CPPFLAGS

                LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"

                export LDFLAGS

 

                AC_LANG_PUSH(C++)

                AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[

                @%:@include <boost/version.hpp>

                ]], [[

                #if BOOST_VERSION >= $WANT_BOOST_VERSION

                // Everything is okay

                #else

                #  error Boost version is too old

                #endif

                ]])],[

                AC_MSG_RESULT(yes)

                succeeded=yes

                found_system=yes

                ],[

                ])

                AC_LANG_POP([C++])

        fi

 

        if test "$succeeded" != "yes" ; then

                if test "$_version" = "0" ; then

                        AC_MSG_ERROR([[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.]])

                else

                        AC_MSG_NOTICE([Your boost libraries seems to old (version $_version).])

                fi

        else

                AC_SUBST(BOOST_CPPFLAGS)

                AC_SUBST(BOOST_LDFLAGS)

                AC_DEFINE(HAVE_BOOST,,[define if the Boost library is available])

        fi

 

        CPPFLAGS="$CPPFLAGS_SAVED"

        LDFLAGS="$LDFLAGS_SAVED"

fi

 

])