Hi,
I'm trying to build the kiface DLLs with all symbols exported so that I
could link them to external test programs (e.g. P&S test cases).
AFAIK symbol visibility is normally controlled in CMake by through the
CMAKE_CXX_VISIBILITY_PRESET variable. However, the following code in the
CMakeLists.txt file forces the symbol visibility to hidden:
-- snip --
if( POLICY CMP0063 )
cmake_policy( GET CMP0063 VISIBILITY_POLICY )
if( VISIBILITY_POLICY STREQUAL NEW )
message( WARNING "Compatibility code for CMake < 3.3 can be
removed, search for CMP0063" )
else()
cmake_policy( SET CMP0063 NEW )
endif()
else()
if( CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY AND NOT APPLE )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}
${CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY}hidden" )
endif()
if( CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN AND NOT APPLE )
set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}
${CMAKE_CXX_COMPILE_OPTIONS_VISIBILITY_INLINES_HIDDEN}" )
endif()
endif()
-- snip --
Could anybody explain what is this code for and if it's really needed
(or maybe it's buggy)?
As a side comment, is there any practical reason to link with
-fvisibility=hidden (maybe except the stable releases)?
Cheers,
Tom
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