Fix the SSL check with Qt 5.6 and GCC 5 (#199)

(cherry picked from commit 4768c9e99f99b581d4e32e797db91d0182391696)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7c2389f..831dabf 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -433,6 +433,11 @@ endif()
 cmake_push_check_state(RESET)
 set(CMAKE_REQUIRED_INCLUDES ${QT_INCLUDES} ${Qt5Core_INCLUDE_DIRS})
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${Qt5Core_EXECUTABLE_COMPILE_FLAGS}")
+
+if (USE_QT5 AND Qt5_POSITION_INDEPENDENT_CODE)
+    set(CMAKE_REQUIRED_FLAGS "-fPIC -DQT_NO_VERSION_TAGGING")
+endif()
+
 check_cxx_source_compiles("
     #include \"qglobal.h\"
     #if defined QT_NO_SSL