Alleviate CMake target name clashes, visibility, and grouping.

Simplify <platform>_generate cmake function signature, as TARGET_ALIAS and TARGET_NAME are still in scope and do not need to be passed.

Add USE_FOLDERS, and FOLDER properties to group targets in VS and XCode

Guard test target with GODOT_ENABLE_TESTING

.github/workflows/ci.yml

@@ -202,7 +202,7 @@ jobs:
         run: |
           mkdir cmake-build
           cd cmake-build
-          cmake ../ -DTEST_TARGET=template_release
+          cmake ../ -DGODOT_ENABLE_TESTING=YES -DTEST_TARGET=template_release
           cmake --build . --verbose -j $(nproc) -t godot-cpp-test --config Release
 
   windows-msvc-cmake:
@@ -218,5 +218,5 @@ jobs:
         run: |
           mkdir cmake-build
           cd cmake-build
-          cmake ../ -DTEST_TARGET=template_release
+          cmake ../ -DGODOT_ENABLE_TESTING=YES -DTEST_TARGET=template_release
           cmake --build . --verbose -t godot-cpp-test --config Release

CMakeLists.txt

@@ -53,5 +53,12 @@ project( godot-cpp
 compiler_detection()
 godotcpp_generate()
 
-# Test Example
-add_subdirectory( test )
+# optionally add the godot-cpp-test integration testing target
+if( GODOT_ENABLE_TESTING )
+    add_subdirectory( test )
+endif()
+
+# If this is the top level CMakeLists.txt, Generators which honor the
+# USE_FOLDERS flag will organize godot-cpp targets under the subfolder
+# 'godot-cpp'. This is enable by default from CMake version 3.26
+set_property(GLOBAL PROPERTY USE_FOLDERS ON)

cmake/android.cmake

@@ -29,13 +29,12 @@ function( android_options )
     # Android Options
 endfunction()
 
-function( android_generate TARGET_NAME )
-
+function( android_generate )
     target_compile_definitions(${TARGET_NAME}
             PUBLIC
             ANDROID_ENABLED
             UNIX_ENABLED
     )
 
-    common_compiler_flags( ${TARGET_NAME} )
+    common_compiler_flags()
 endfunction()

cmake/common_compiler_flags.cmake

@@ -44,7 +44,7 @@ function( compiler_detection )
     endif ()
 endfunction(  )
 
-function( common_compiler_flags TARGET_NAME )
+function( common_compiler_flags )
 
     target_compile_features(${TARGET_NAME}
             PUBLIC

cmake/godotcpp.cmake

@@ -142,6 +142,9 @@ function( godotcpp_options )
     option( GODOT_SYSTEM_HEADERS "Expose headers as SYSTEM." OFF )
     option( GODOT_WARNING_AS_ERROR "Treat warnings as errors" OFF )
 
+    # Enable Testing
+    option( GODOT_ENABLE_TESTING "Enable the godot-cpp-test target for integration testing" OFF )
+
     #[[ Target Platform Options ]]
     android_options()
     ios_options()
@@ -263,15 +266,16 @@ function( godotcpp_generate )
     set( DEV_TAG "$<${IS_DEV_BUILD}:.dev>" )
 
     ### Define our godot-cpp library targets
-    foreach ( TARGET_NAME template_debug template_release editor )
+    foreach ( TARGET_ALIAS template_debug template_release editor )
+        set( TARGET_NAME "godot-cpp.${TARGET_ALIAS}" )
 
         # Generator Expressions that rely on the target
         set( DEBUG_FEATURES "$<NOT:$<STREQUAL:${TARGET_NAME},template_release>>" )
         set( HOT_RELOAD "$<IF:${HOT_RELOAD-UNSET},${DEBUG_FEATURES},$<BOOL:${GODOT_USE_HOT_RELOAD}>>" )
 
         # the godot-cpp.* library targets
         add_library( ${TARGET_NAME} STATIC EXCLUDE_FROM_ALL )
-        add_library( godot-cpp::${TARGET_NAME} ALIAS ${TARGET_NAME} )
+        add_library( godot-cpp::${TARGET_ALIAS} ALIAS ${TARGET_NAME} )
 
         file( GLOB_RECURSE GODOTCPP_SOURCES LIST_DIRECTORIES NO CONFIGURE_DEPENDS src/*.cpp )
 
@@ -298,33 +302,36 @@ function( godotcpp_generate )
                 BUILD_RPATH_USE_ORIGIN ON
 
                 PREFIX lib
-                OUTPUT_NAME "${PROJECT_NAME}.${SYSTEM_NAME}.${TARGET_NAME}${DEV_TAG}.${SYSTEM_ARCH}"
+                OUTPUT_NAME "${PROJECT_NAME}.${SYSTEM_NAME}.${TARGET_ALIAS}${DEV_TAG}.${SYSTEM_ARCH}"
                 ARCHIVE_OUTPUT_DIRECTORY "$<1:${CMAKE_BINARY_DIR}/bin>"
 
                 # Things that are handy to know for dependent targets
                 GODOT_PLATFORM "${SYSTEM_NAME}"
-                GODOT_TARGET "${TARGET_NAME}"
+                GODOT_TARGET "${TARGET_ALIAS}"
                 GODOT_ARCH "${SYSTEM_ARCH}"
+
+                # Some IDE's respect this property to logically group targets
+                FOLDER "godot-cpp"
         )
 
         if( CMAKE_SYSTEM_NAME STREQUAL Android )
-            android_generate( ${TARGET_NAME} )
+            android_generate()
         elseif ( CMAKE_SYSTEM_NAME STREQUAL iOS )
-            ios_generate( ${TARGET_NAME} )
+            ios_generate()
         elseif ( CMAKE_SYSTEM_NAME STREQUAL Linux )
-            linux_generate( ${TARGET_NAME} )
+            linux_generate()
         elseif ( CMAKE_SYSTEM_NAME STREQUAL Darwin )
-            macos_generate( ${TARGET_NAME} )
+            macos_generate()
         elseif ( CMAKE_SYSTEM_NAME STREQUAL Emscripten )
-            web_generate( ${TARGET_NAME} )
+            web_generate()
         elseif ( CMAKE_SYSTEM_NAME STREQUAL Windows )
-            windows_generate( ${TARGET_NAME} )
+            windows_generate()
         endif ()
 
     endforeach ()
 
     # Added for backwards compatibility with prior cmake solution so that builds dont immediately break
     # from a missing target.
-    add_library( godot::cpp ALIAS template_debug )
+    add_library( godot::cpp ALIAS godot-cpp.template_debug )
 
 endfunction()

cmake/ios.cmake

@@ -10,13 +10,12 @@ function(ios_options)
     # iOS options
 endfunction()
 
-function(ios_generate TARGET_NAME)
-
+function(ios_generate)
     target_compile_definitions(${TARGET_NAME}
             PUBLIC
             IOS_ENABLED
             UNIX_ENABLED
     )
 
-    common_compiler_flags(${TARGET_NAME})
+    common_compiler_flags()
 endfunction()

cmake/linux.cmake

@@ -10,13 +10,12 @@ function( linux_options )
     # Linux Options
 endfunction()
 
-function( linux_generate TARGET_NAME )
-
+function( linux_generate )
     target_compile_definitions( ${TARGET_NAME}
             PUBLIC
             LINUX_ENABLED
             UNIX_ENABLED
     )
 
-    common_compiler_flags( ${TARGET_NAME} )
+    common_compiler_flags()
 endfunction()

cmake/macos.cmake

@@ -23,7 +23,7 @@ function( macos_options )
 endfunction()
 
 
-function( macos_generate TARGET_NAME )
+function( macos_generate )
 
     # OSX_ARCHITECTURES does not support generator expressions.
     if( NOT GODOT_ARCH OR GODOT_ARCH STREQUAL universal )
@@ -55,5 +55,5 @@ function( macos_generate TARGET_NAME )
             ${COCOA_LIBRARY}
     )
 
-    common_compiler_flags( ${TARGET_NAME} )
+    common_compiler_flags()
 endfunction()

cmake/web.cmake

@@ -15,8 +15,7 @@ function( web_options )
 endfunction()
 
 
-function( web_generate TARGET_NAME )
-
+function( web_generate )
     target_compile_definitions(${TARGET_NAME}
             PUBLIC
             WEB_ENABLED
@@ -38,5 +37,5 @@ function( web_generate TARGET_NAME )
             -shared
     )
 
-    common_compiler_flags( ${TARGET_NAME} )
+    common_compiler_flags()
 endfunction()

cmake/windows.cmake

@@ -58,7 +58,7 @@ function( windows_options )
 endfunction()
 
 #[===========================[ Target Generation ]===========================]
-function( windows_generate TARGET_NAME )
+function( windows_generate )
     set( STATIC_CPP "$<BOOL:${GODOT_USE_STATIC_CPP}>")
     set( DEBUG_CRT "$<BOOL:${GODOT_DEBUG_CRT}>" )
 
@@ -96,5 +96,5 @@ function( windows_generate TARGET_NAME )
             $<${IS_CLANG}:-lstdc++>
     )
 
-    common_compiler_flags( ${TARGET_NAME} )
+    common_compiler_flags()
 endfunction()