use symbol visibility for GCC 4.x

dabrahams · dabrahams · commit 321cf2502afa · 2005-11-29T22:26:05.000Z
[SVN r31827]
diff --git a/include/boost/python/detail/config.hpp b/include/boost/python/detail/config.hpp
@@ -68,10 +68,10 @@
 
 #if defined(BOOST_PYTHON_DYNAMIC_LIB)
 
-#  if !defined(_WIN32) && !defined(__CYGWIN__)                  \
-    && defined(__GNUC__) && __GNUC__ >= 3 && __GNUC_MINOR__ >=5 \
-    && !defined(BOOST_PYTHON_GCC_SYMBOL_VISIBILITY)
-#    define BOOST_PYTHON_USE_GCC_SYMBOL_VISIBILITY
+#  if !defined(_WIN32) && !defined(__CYGWIN__)                                  \
+    && !defined(BOOST_PYTHON_USE_GCC_SYMBOL_VISIBILITY)                         \
+    && BOOST_WORKAROUND(__GNUC__, >= 3) && (__GNUC_MINOR__ >=5 || __GNUC__ > 3)
+#    define BOOST_PYTHON_USE_GCC_SYMBOL_VISIBILITY 1
 #  endif 
 
 #  if defined(BOOST_PYTHON_USE_GCC_SYMBOL_VISIBILITY)
