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# ===========================================================================

#          http://www.nongnu.org/autoconf-archive/ax_boost_base.html

# ===========================================================================

#

# SYNOPSIS

#

#   AX_BOOST_BASE([MINIMUM-VERSION])

#

# DESCRIPTION

#

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

#

#   If no path to the installed boost library is given the macro searchs

#   under /usr, /usr/local, /opt and /opt/local and evaluates the

#   $BOOST_ROOT environment variable. Further documentation is available at

#   <http://randspringer.de/boost/index.html>.

#

#   This macro calls:

#

#     AC_SUBST(BOOST_CPPFLAGS) / AC_SUBST(BOOST_LDFLAGS)

#

#   And sets:

#

#     HAVE_BOOST

#

#   EDIT: 2009-09-07 Cristian Greco <cristian.debian@gmail.com>

#     - Call AC_SUBST(BOOST_VERSION).

#

# LICENSE

#

#   Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>

#

#   Copying and distribution of this file, with or without modification, are

#   permitted in any medium without royalty provided the copyright notice

#   and this notice are preserved.

 

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 "x$withval" = "xno"; then

                want_boost="no"

    elif test "x$withval" = "xyes"; then

        want_boost="yes"

        ac_boost_path=""

    else

            want_boost="yes"

        ac_boost_path="$withval"

        fi

    ],

    [want_boost="yes"])

 

 

AC_ARG_WITH([boost-libdir],

        AS_HELP_STRING([--with-boost-libdir=LIB_DIR],

        [Force given directory for boost libraries. Note that this will overwrite library path detection, so use this parameter only if default library detection fails and you know exactly where your boost libraries are located.]),

        [

        if test -d $withval

        then

                ac_boost_lib_path="$withval"

        else

                AC_MSG_ERROR(--with-boost-libdir expected directory name)

        fi

        ],

        [ac_boost_lib_path=""]

)

 

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 "x$ac_boost_path" != "x"; 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 /opt/local ; 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"

        BOOST_VERSION=`grep "define BOOST_LIB_VERSION" $ac_boost_path_tmp/include/boost/version.hpp | sed 's,^.*\"\([[0-9]][[_0-9]]*\)\"$,\1, ; s,_0$,, ; s,_,.,'`

                                break;

                        fi

                done

        fi

 

    dnl overwrite ld flags if we have required special directory with

    dnl --with-boost-libdir parameter

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

       BOOST_LDFLAGS="-L$ac_boost_lib_path"

    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 "x$ac_boost_path" != "x"; then

                        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 /opt/local ; 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"

            if test "x$ac_boost_lib_path" = "x"

            then

               BOOST_LDFLAGS="-L$best_path/lib"

            fi

 

                        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 "$V_CHECK" = "1" -a "x$ac_boost_lib_path" = "x" ; 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 "x$succeeded" != "xyes" ; 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_SUBST(BOOST_VERSION)

                AC_DEFINE(HAVE_BOOST,[1],[define if the Boost library is available])

        fi

 

        CPPFLAGS="$CPPFLAGS_SAVED"

        LDFLAGS="$LDFLAGS_SAVED"

fi

 

])