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AC_DEFUN([ARABICA_HAS_BOOST],
[
AC_ARG_WITH([boost],
AS_HELP_STRING([--with-boost=DIR],
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[Specify the root directory for Boost library. --with-boost=no to disable]),
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[
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
AC_REQUIRE([AC_PROG_CC])
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_CPPFLAGS="-I$ac_boost_path"
else
for ac_boost_path_tmp in /usr/include /usr/local/include /opt /opt/include ; do
if test -d "$ac_boost_path_tmp/boost" && test -r "$ac_boost_path_tmp/boost"; then
BOOST_CPPFLAGS="-I$ac_boost_path_tmp"
break;
fi
done
fi
CPPFLAGS_SAVED="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
export CPPFLAGS
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
ifelse([$2], , :, [$2])
],
[
])
AC_LANG_POP([C++])
dnl if we found no boost with system layout we search for boost libraries
dnl built and installed without the --layout=system option or for a staged(not installed) version
if test "x$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-$VERSION_UNDERSCORE"
if test "x$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"
fi
fi
fi
fi
CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
export CPPFLAGS
AC_LANG_PUSH(C++)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@%:@include <boost/version.hpp>
]],
[[
#if BOOST_VERSION >= $WANT_BOOST_VERSION
// Everything is okay
#else
# error Boost version is too old
#endif
]])],
[
AC_MSG_RESULT(yes ($_version))
succeeded=yes
ifelse([$2], , :, [$2])
],
[
AC_MSG_RESULT(no ($_version))
ifelse([$3], , :, [$3])
])
AC_LANG_POP([C++])
fi
if test "$succeeded" != "yes" ; then
if test "$_version" = "0" ; then
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AC_MSG_NOTICE([[Could not detect the Boost libraries (version $boost_lib_version_req_shorten or higher). If you do have Boost installed, then check your version number looking in <boost/version.hpp>. ]])
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else
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AC_MSG_NOTICE('Your Boost libraries seems to old (version $_version). We need at least $boost_lib_version_shorten')
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fi
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AC_MSG_NOTICE([[Arabica will build, but some features will not be available]])
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else
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AC_SUBST(BOOST_CPPFLAGS)
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AC_DEFINE(HAVE_BOOST,,[define if the Boost library is available])
fi
CPPFLAGS="$CPPFLAGS_SAVED"
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else
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AC_MSG_NOTICE([[Not searching for Boost. Arabica will build, but some features will not be available]])
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fi
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if test "$succeeded" = "yes"; then
boost_is_available=yes
else
boost_is_available=no
fi
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])
