For Boost thread, link with Boost.System MP-438

But only if Boost version >= 1.41.0 .

diff --git a/boost.m4 b/boost.m4
index b667071..ff8e0f6 100644 (file)
--- a/boost.m4
+++ b/boost.m4
@@ -73,15 +73,19 @@ version_is:BOOST_VERSION
                        AC_SUBST([BOOST_THREAD_LIB])
                        saveLIBS="${LIBS}"
                        BOOST_THREAD_LIB=""
-                       for l in boost_thread${BOOST_TOOLSET}-mt boost_thread${BOOST_TOOLSET}; do
-                           LIBS="${saveLIBS} -l${l}"
+                       for l in ${BOOST_TOOLSET}-mt ${BOOST_TOOLSET}; do
+                           trylib="-lboost_thread${l}"
+                           if test "$BOOST_GOT_VERSION" -ge 104100; then
+                               trylib="-lboost_system${l} ${trylib}"
+                           fi
+                           LIBS="${saveLIBS} ${trylib}"
                        AC_LINK_IFELSE([AC_LANG_PROGRAM([[
 #include <boost/version.hpp>
 #include <boost/thread/thread.hpp>
 ]],[[ 
 int x = BOOST_VERSION;
 ]])],[
-                           BOOST_THREAD_LIB="-l${l}"
+                           BOOST_THREAD_LIB="${trylib}"
                            break],[])
                        done
                        if test "${BOOST_THREAD_LIB}"; then