Add visibility policies to libshiboken and for bindings generated by shiboken generator.

As shiboken generator needs minor changes to support inter-module dependencies, these changes
about symbol visibility does not support inter-module dependencies, however support it is
simple, because we just need to make some symbols visible to other DSO's.

Reviewed by Marcelo Lira <marcelo.lira@openbossa.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/libshiboken/shibokenmacros.h b/libshiboken/shibokenmacros.h
new file mode 100644
index 000000000..7da6c0a2f
--- /dev/null
+++ b/libshiboken/shibokenmacros.h
@@ -0,0 +1,55 @@
+/*
+* This file is part of the Shiboken Python Bindings Generator project.
+*
+* Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+*
+* Contact: PySide team <contact@pyside.org>
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public License
+* version 2.1 as published by the Free Software Foundation. Please
+* review the following information to ensure the GNU Lesser General
+* Public License version 2.1 requirements will be met:
+* http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+*
+* As a special exception to the GNU Lesser General Public License
+* version 2.1, the object code form of a "work that uses the Library"
+* may incorporate material from a header file that is part of the
+* Library.  You may distribute such object code under terms of your
+* choice, provided that the incorporated material (i) does not exceed
+* more than 5% of the total size of the Library; and (ii) is limited to
+* numerical parameters, data structure layouts, accessors, macros,
+* inline functions and templates.
+*
+* This program is distributed in the hope that it will be useful, but
+* WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+* 02110-1301 USA
+*/
+
+#ifndef SHIBOKENMACROS_H
+#define SHIBOKENMACROS_H
+
+// LIBSHIBOKEN_API is used for the public API symbols.
+// LIBSHIBOKEN_LOCAL is used for non-api symbols, i.e. internal functions and classes.
+// Generic helper definitions for shared library support
+#if defined _WIN32 || defined __CYGWIN__
+    #if LIBSHIBOKEN_BUILD
+        #define LIBSHIBOKEN_API __declspec(dllimport)
+    #else
+        #define LIBSHIBOKEN_API __declspec(dllexport)
+    #endif
+#else
+#if __GNUC__ >= 4
+    #define LIBSHIBOKEN_API __attribute__ ((visibility("default")))
+#else
+    #define LIBSHIBOKEN_API
+#endif
+#endif
+
+#endif