+ AC_MSG_CHECKING([Boost system])
+ saveLIBS="${LIBS}"
+ for l in "${BOOST_TOOLSET}-mt" "${BOOST_TOOLSET}"; do
+ trylib="-lboost_system${l}"
+ LIBS="${saveLIBS} ${trylib}"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+#include <boost/version.hpp>
+#include <boost/system/error_code.hpp>
+]],[[
+int x = BOOST_VERSION;
+]])],[
+ BOOST_SYSTEM_LIB="${trylib}"
+ break],[])
+ done
+ if test "${BOOST_SYSTEM_LIB}"; then
+ AC_MSG_RESULT([yes])
+ else
+ AC_MSG_RESULT([no])
+ fi