Only export public symbols on non-windows platforms (#1998)

* Refs 11751. Using --version-script to only export symbols containing eprosima. Signed-off-by: Miguel Company <miguelcompany@eProsima.com> * Refs 11751. Also exporting the MD5 class. Signed-off-by: Miguel Company <miguelcompany@eProsima.com> * Refs 11751. Add more exported symbols. Signed-off-by: Miguel Company <miguelcompany@eProsima.com> * Refs 11751. Check support for linker option. Signed-off-by: Miguel Company <miguelcompany@eProsima.com> * Refs 11751. Pass the linker flags using a well-known cmake variable Signed-off-by: Barro <miguelbarro@eprosima.com> * Revert "Refs 11751. Pass the linker flags using a well-known cmake variable" This reverts commit 8ec1fec. Signed-off-by: Barro <miguelbarro@eprosima.com> Co-authored-by: Barro <miguelbarro@eprosima.com>
eProsima · Dec 20, 2021 · 2a655a2 · 2a655a2
1 parent 8a067dc
commit 2a655a2
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diff --git a/src/cpp/CMakeLists.txt b/src/cpp/CMakeLists.txt
@@ -12,6 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+include(CheckCXXSourceCompiles)
+
 # Set source files
 
 if(WIN32)
@@ -503,6 +505,17 @@ if(MSVC OR MSVC_IDE)
     if("${CMAKE_SYSTEM_NAME}" STREQUAL "WindowsStore")
         set_target_properties(${PROJECT_NAME} PROPERTIES VS_WINRT_COMPONENT "true")
     endif()
+elseif(BUILD_SHARED_LIBS)
+    set(VERSION_SCRIPT_SUPPORT_FLAGS -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/libfastrtps.version)
+    set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
+    set(CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS} ${VERSION_SCRIPT_SUPPORT_FLAGS})
+    CHECK_CXX_SOURCE_COMPILES("int main(int, char**){return 0;}" HAS_VERSION_SCRIPT_SUPPORT)
+    set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
+    unset(OLD_CMAKE_REQUIRED_FLAGS)
+    if(HAS_VERSION_SCRIPT_SUPPORT)
+        message(STATUS "Using linker version script to select exported symbols")
+        target_link_options(${PROJECT_NAME} ${PRIVACY} ${VERSION_SCRIPT_SUPPORT_FLAGS})
+    endif()
 endif()
 
 ###############################################################################

diff --git a/src/cpp/libfastrtps.version b/src/cpp/libfastrtps.version
@@ -0,0 +1,4 @@
+CODEABI_1.0 {
+	global: *eprosima*;*MD5*;*dds*;
+	local: *;
+};