telepathy-qt: cmake: pass -fvisibility-inlines-hidden to the compiler if it 's supported

[Dario Freddi]

Module: telepathy-qt
Branch: master
Commit: 4dfce2b1ccca35a93127b8d1cf931c68dd4c6834
URL:    http://cgit.freedesktop.org/telepathy/telepathy-qt/commit/?id=4dfce2b1ccca35a93127b8d1cf931c68dd4c6834

Author: George Kiagiadakis <george.kiagiadakis at collabora.com>
Date:   Tue Jul  3 12:19:58 2012 +0300

cmake: pass -fvisibility-inlines-hidden to the compiler if it's supported

This flag allows most inline functions to be hidden from the exported
symbol table to avoid symbol table pollution.

---

 cmake/modules/TelepathyDefaults.cmake |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/cmake/modules/TelepathyDefaults.cmake b/cmake/modules/TelepathyDefaults.cmake
index a7bf77a..ee3ab33 100644
--- a/cmake/modules/TelepathyDefaults.cmake
+++ b/cmake/modules/TelepathyDefaults.cmake
@@ -47,6 +47,11 @@ if(CMAKE_COMPILER_IS_GNUCXX)
         set(VISIBILITY_HIDDEN_FLAGS)
     endif (CXX_FVISIBILITY_HIDDEN)
 
+    CHECK_CXX_ACCEPTS_FLAG("-fvisibility-inlines-hidden" CXX_FVISIBILITY_INLINES_HIDDEN)
+    if (CXX_FVISIBILITY_INLINES_HIDDEN)
+        set(VISIBILITY_HIDDEN_FLAGS "${VISIBILITY_HIDDEN_FLAGS} -fvisibility-inlines-hidden")
+    endif (CXX_FVISIBILITY_INLINES_HIDDEN)
+
     CHECK_CXX_ACCEPTS_FLAG("-Wdeprecated-declarations" CXX_DEPRECATED_DECLARATIONS)
     if (CXX_DEPRECATED_DECLARATIONS)
         set(DEPRECATED_DECLARATIONS_FLAGS "-Wdeprecated-declarations -DTP_QT_DEPRECATED_WARNINGS")