Work around Xcode project limitations in more cases.

Not sure why this wasn't a problem with OSX build, only iOS.

src/Magnum/CMakeLists.txt

@@ -323,7 +323,7 @@ if(BUILD_TESTS)
     # Library with graceful assert for testing
     add_library(MagnumMathTestLib ${SHARED_OR_STATIC}
         $<TARGET_OBJECTS:MagnumMathObjects>
-        dummy.cpp) # XCode workaround, see file comment for details
+        ${PROJECT_SOURCE_DIR}/src/dummy.cpp) # XCode workaround, see file comment for details
     target_include_directories(MagnumMathTestLib PUBLIC $<TARGET_PROPERTY:Magnum,INTERFACE_INCLUDE_DIRECTORIES>)
     target_compile_definitions(MagnumMathTestLib PRIVATE "CORRADE_GRACEFUL_ASSERT")
     set_target_properties(MagnumMathTestLib PROPERTIES DEBUG_POSTFIX "-d")

src/Magnum/Platform/CMakeLists.txt

@@ -645,7 +645,7 @@ if(NEED_EGLCONTEXT OR WITH_EGLCONTEXT)
     if(WITH_EGLCONTEXT)
         add_library(MagnumEglContext STATIC
             $<TARGET_OBJECTS:MagnumEglContextObjects>
-            ../dummy.cpp) # XCode workaround, see file comment for details
+            ${PROJECT_SOURCE_DIR}/src/dummy.cpp) # XCode workaround, see file comment for details
         set_target_properties(MagnumEglContext PROPERTIES DEBUG_POSTFIX "-d")
         if(BUILD_STATIC_PIC)
             set_target_properties(MagnumEglContext PROPERTIES POSITION_INDEPENDENT_CODE ON)

src/MagnumPlugins/MagnumFont/CMakeLists.txt

@@ -65,7 +65,9 @@ if(BUILD_GL_TESTS)
             ${MagnumFont_HEADERS})
         target_compile_definitions(MagnumMagnumFontTestLib PRIVATE "MAGNUM_TGAIMPORTER_BUILD_STATIC")
     else()
-        add_library(MagnumMagnumFontTestLib STATIC $<TARGET_OBJECTS:MagnumFontObjects>)
+        add_library(MagnumMagnumFontTestLib STATIC
+            $<TARGET_OBJECTS:MagnumFontObjects>
+            ${PROJECT_SOURCE_DIR}/src/dummy.cpp) # XCode workaround, see file comment for details
     endif()
     target_link_libraries(MagnumMagnumFontTestLib Magnum MagnumText MagnumTgaImporterTestLib)
 

src/MagnumPlugins/MagnumFontConverter/CMakeLists.txt

@@ -65,7 +65,9 @@ if(BUILD_GL_TESTS)
             ${MagnumFontConverter_HEADERS})
         target_compile_definitions(MagnumMagnumFontConverterTestLib PRIVATE "MAGNUM_TGAIMAGECONVERTER_BUILD_STATIC")
     else()
-        add_library(MagnumMagnumFontConverterTestLib STATIC $<TARGET_OBJECTS:MagnumFontConverterObjects>)
+        add_library(MagnumMagnumFontConverterTestLib STATIC
+            $<TARGET_OBJECTS:MagnumFontConverterObjects>
+            ${PROJECT_SOURCE_DIR}/src/dummy.cpp) # XCode workaround, see file comment for details
     endif()
     target_link_libraries(MagnumMagnumFontConverterTestLib Magnum MagnumText MagnumTgaImageConverterTestLib)
 

src/MagnumPlugins/ObjImporter/CMakeLists.txt

@@ -51,7 +51,9 @@ target_link_libraries(ObjImporter Magnum MagnumMeshTools)
 install(FILES ${ObjImporter_HEADERS} DESTINATION ${MAGNUM_PLUGINS_INCLUDE_INSTALL_DIR}/ObjImporter)
 
 if(BUILD_TESTS)
-    add_library(MagnumObjImporterTestLib STATIC $<TARGET_OBJECTS:ObjImporterObjects>)
+    add_library(MagnumObjImporterTestLib STATIC
+        $<TARGET_OBJECTS:ObjImporterObjects>
+        ${PROJECT_SOURCE_DIR}/src/dummy.cpp) # XCode workaround, see file comment for details
     target_link_libraries(MagnumObjImporterTestLib Magnum MagnumMeshTools)
     add_subdirectory(Test)
 endif()

src/MagnumPlugins/TgaImageConverter/CMakeLists.txt

@@ -62,7 +62,9 @@ install(FILES ${TgaImageConverter_HEADERS} DESTINATION ${MAGNUM_PLUGINS_INCLUDE_
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/configure.h DESTINATION ${MAGNUM_PLUGINS_INCLUDE_INSTALL_DIR}/TgaImageConverter)
 
 if(BUILD_TESTS)
-    add_library(MagnumTgaImageConverterTestLib STATIC $<TARGET_OBJECTS:TgaImageConverterObjects>)
+    add_library(MagnumTgaImageConverterTestLib STATIC
+        $<TARGET_OBJECTS:TgaImageConverterObjects>
+        ${PROJECT_SOURCE_DIR}/src/dummy.cpp) # XCode workaround, see file comment for details
     target_link_libraries(MagnumTgaImageConverterTestLib Magnum)
 
     add_subdirectory(Test)

src/MagnumPlugins/TgaImporter/CMakeLists.txt

@@ -63,7 +63,9 @@ install(FILES ${TgaImporter_HEADERS} DESTINATION ${MAGNUM_PLUGINS_INCLUDE_INSTAL
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/configure.h DESTINATION ${MAGNUM_PLUGINS_INCLUDE_INSTALL_DIR}/TgaImporter)
 
 if(BUILD_TESTS)
-    add_library(MagnumTgaImporterTestLib STATIC $<TARGET_OBJECTS:TgaImporterObjects>)
+    add_library(MagnumTgaImporterTestLib STATIC
+        $<TARGET_OBJECTS:TgaImporterObjects>
+        ${PROJECT_SOURCE_DIR}/src/dummy.cpp) # XCode workaround, see file comment for details
     target_link_libraries(MagnumTgaImporterTestLib Magnum)
 
     add_subdirectory(Test)

src/MagnumPlugins/WavAudioImporter/CMakeLists.txt

@@ -54,7 +54,9 @@ target_link_libraries(WavAudioImporter Magnum MagnumAudio)
 install(FILES ${WavAudioImporter_HEADERS} DESTINATION ${MAGNUM_PLUGINS_INCLUDE_INSTALL_DIR}/WavAudioImporter)
 
 if(BUILD_TESTS)
-    add_library(MagnumWavAudioImporterTestLib STATIC $<TARGET_OBJECTS:WavAudioImporterObjects>)
+    add_library(MagnumWavAudioImporterTestLib STATIC
+        $<TARGET_OBJECTS:WavAudioImporterObjects>
+        ${PROJECT_SOURCE_DIR}/src/dummy.cpp) # XCode workaround, see file comment for details
     target_link_libraries(MagnumWavAudioImporterTestLib Magnum MagnumAudio)
     add_subdirectory(Test)
 endif()