Fix linking of tests in static Windows build.

Also fixes the "multiple definition" Emscripten issue, which was worked
around in f44af271df.

src/Plugins/TgaImageConverter/CMakeLists.txt

@@ -40,11 +40,7 @@ target_link_libraries(TgaImageConverter Magnum)
 install(FILES ${TgaImageConverter_HEADERS} DESTINATION ${MAGNUM_PLUGINS_INCLUDE_INSTALL_DIR}/TgaImageConverter)
 
 if(BUILD_TESTS)
-    add_library(TgaImageConverterTestLib SHARED $<TARGET_OBJECTS:TgaImageConverterObjects>)
-    # Otherwise llvm-link complains about multiply defined Debug::globalOutput.
-    # TODO: can this be done properly?
-    if(NOT CORRADE_TARGET_EMSCRIPTEN)
-        target_link_libraries(TgaImageConverterTestLib Magnum)
-    endif()
+    add_library(TgaImageConverterTestLib ${SHARED_OR_STATIC} $<TARGET_OBJECTS:TgaImageConverterObjects>)
+    target_link_libraries(TgaImageConverterTestLib Magnum)
     add_subdirectory(Test)
 endif()

src/Plugins/TgaImporter/CMakeLists.txt

@@ -41,7 +41,7 @@ target_link_libraries(TgaImporter Magnum)
 install(FILES ${TgaImporter_HEADERS} DESTINATION ${MAGNUM_PLUGINS_INCLUDE_INSTALL_DIR}/TgaImporter)
 
 if(BUILD_TESTS)
-    add_library(TgaImporterTestLib SHARED $<TARGET_OBJECTS:TgaImporterObjects>)
+    add_library(TgaImporterTestLib ${SHARED_OR_STATIC} $<TARGET_OBJECTS:TgaImporterObjects>)
     target_link_libraries(TgaImporterTestLib Magnum)
     add_subdirectory(Test)
 endif()