Fix: mark (again) section start/end symbols as hidden

[babeltrace.git] / include / babeltrace2 / plugin / plugin-dev.h

diff --git a/include/babeltrace2/plugin/plugin-dev.h b/include/babeltrace2/plugin/plugin-dev.h
index 7a862c05bb47071c6faa325a28958c6d798447f3..f4444f92040f7d96fd7a5414cef6419ef01762dd 100644 (file)
--- a/include/babeltrace2/plugin/plugin-dev.h
+++ b/include/babeltrace2/plugin/plugin-dev.h
@@ -17,6 +17,17 @@
 #include <babeltrace2/graph/message-iterator-class.h>
 #include <babeltrace2/types.h>
 
+/*
+ * _BT_HIDDEN: set the hidden attribute for internal functions
+ * On Windows, symbols are local unless explicitly exported,
+ * see https://gcc.gnu.org/wiki/Visibility
+ */
+#if defined(_WIN32) || defined(__CYGWIN__)
+#define _BT_HIDDEN
+#else
+#define _BT_HIDDEN __attribute__((visibility("hidden")))
+#endif
+
 /*
  * _BT_EXPORT: set the visibility for exported functions.
  */
@@ -319,20 +330,20 @@ other <code>BT_PLUGIN*()</code> macro.
 */
 #define BT_PLUGIN_MODULE() \
        static struct __bt_plugin_descriptor const * const __bt_plugin_descriptor_dummy __BT_PLUGIN_DESCRIPTOR_ATTRS = NULL; \
-       extern struct __bt_plugin_descriptor const *__BT_PLUGIN_DESCRIPTOR_BEGIN_SYMBOL __BT_PLUGIN_DESCRIPTOR_BEGIN_EXTRA; \
-       extern struct __bt_plugin_descriptor const *__BT_PLUGIN_DESCRIPTOR_END_SYMBOL __BT_PLUGIN_DESCRIPTOR_END_EXTRA; \
+       _BT_HIDDEN extern struct __bt_plugin_descriptor const *__BT_PLUGIN_DESCRIPTOR_BEGIN_SYMBOL __BT_PLUGIN_DESCRIPTOR_BEGIN_EXTRA; \
+       _BT_HIDDEN extern struct __bt_plugin_descriptor const *__BT_PLUGIN_DESCRIPTOR_END_SYMBOL __BT_PLUGIN_DESCRIPTOR_END_EXTRA; \
        \
        static struct __bt_plugin_descriptor_attribute const * const __bt_plugin_descriptor_attribute_dummy __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_ATTRS = NULL; \
-       extern struct __bt_plugin_descriptor_attribute const *__BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_BEGIN_SYMBOL __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_BEGIN_EXTRA; \
-       extern struct __bt_plugin_descriptor_attribute const *__BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_END_SYMBOL __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_END_EXTRA; \
+       _BT_HIDDEN extern struct __bt_plugin_descriptor_attribute const *__BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_BEGIN_SYMBOL __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_BEGIN_EXTRA; \
+       _BT_HIDDEN extern struct __bt_plugin_descriptor_attribute const *__BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_END_SYMBOL __BT_PLUGIN_DESCRIPTOR_ATTRIBUTES_END_EXTRA; \
        \
        static struct __bt_plugin_component_class_descriptor const * const __bt_plugin_component_class_descriptor_dummy __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRS = NULL; \
-       extern struct __bt_plugin_component_class_descriptor const *__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_BEGIN_SYMBOL __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_BEGIN_EXTRA; \
-       extern struct __bt_plugin_component_class_descriptor const *__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_END_SYMBOL __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_END_EXTRA; \
+       _BT_HIDDEN extern struct __bt_plugin_component_class_descriptor const *__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_BEGIN_SYMBOL __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_BEGIN_EXTRA; \
+       _BT_HIDDEN extern struct __bt_plugin_component_class_descriptor const *__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_END_SYMBOL __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_END_EXTRA; \
        \
        static struct __bt_plugin_component_class_descriptor_attribute const * const __bt_plugin_component_class_descriptor_attribute_dummy __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_ATTRS = NULL; \
-       extern struct __bt_plugin_component_class_descriptor_attribute const *__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_BEGIN_SYMBOL __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_BEGIN_EXTRA; \
-       extern struct __bt_plugin_component_class_descriptor_attribute const *__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_END_SYMBOL __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_END_EXTRA; \
+       _BT_HIDDEN extern struct __bt_plugin_component_class_descriptor_attribute const *__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_BEGIN_SYMBOL __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_BEGIN_EXTRA; \
+       _BT_HIDDEN extern struct __bt_plugin_component_class_descriptor_attribute const *__BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_END_SYMBOL __BT_PLUGIN_COMPONENT_CLASS_DESCRIPTOR_ATTRIBUTES_END_EXTRA; \
        \
        _BT_EXPORT struct __bt_plugin_descriptor const * const *__bt_get_begin_section_plugin_descriptors(void) \
        { \