Generate install layout for Mac (#2144)

* 1. Move call to install(TARGETS...) to its own function to create a platform specific implementation for Mac.
2. Add linker-signed flag to work around cmake install issue.

Signed-off-by: amzn-sj <srikkant@amazon.com>

* Add newline

Signed-off-by: amzn-sj <srikkant@amazon.com>

* 1. Rename function to ly_install_target_override and only call it if it has been implemented.
2. Pass in runtime, archive, and library directory paths as params to clean it up a bit.

Signed-off-by: amzn-sj <srikkant@amazon.com>

cmake/Platform/Common/Install_common.cmake

@@ -100,6 +100,16 @@ function(ly_setup_target OUTPUT_CONFIGURED_TARGET ALIAS_TARGET_NAME absolute_tar
         cmake_path(RELATIVE_PATH target_library_output_directory BASE_DIRECTORY ${CMAKE_LIBRARY_OUTPUT_DIRECTORY} OUTPUT_VARIABLE target_library_output_subdirectory)
     endif()
 
+    if(COMMAND ly_install_target_override)
+        # Mac needs special handling because of a cmake issue
+        ly_install_target_override(TARGET ${TARGET_NAME}
+            ARCHIVE_DIR ${archive_output_directory}
+            LIBRARY_DIR ${library_output_directory}
+            RUNTIME_DIR ${runtime_output_directory}
+            LIBRARY_SUBDIR ${target_library_output_subdirectory}
+            RUNTIME_SUBDIR ${target_runtime_output_subdirectory}
+        )
+    else()
         install(
             TARGETS ${TARGET_NAME}
             ARCHIVE
@@ -112,6 +122,7 @@ function(ly_setup_target OUTPUT_CONFIGURED_TARGET ALIAS_TARGET_NAME absolute_tar
                 DESTINATION ${runtime_output_directory}/${PAL_PLATFORM_NAME}/$<CONFIG>/${target_runtime_output_subdirectory}
                 COMPONENT ${install_component}
         )
+    endif()
 
     # CMakeLists.txt file
     string(REGEX MATCH "(.*)::(.*)$" match ${ALIAS_TARGET_NAME})
@@ -487,7 +498,7 @@ function(ly_setup_others)
 
     # Scripts
     file(GLOB o3de_scripts "${LY_ROOT_FOLDER}/scripts/o3de.*")
-    install(FILES
+    install(PROGRAMS
         ${o3de_scripts}
         DESTINATION ./scripts
     )
@@ -505,6 +516,14 @@ function(ly_setup_others)
         DESTINATION .
         REGEX "downloaded_packages" EXCLUDE
         REGEX "runtime" EXCLUDE
+        REGEX ".*$\.sh" EXCLUDE
+    )
+
+    # For Mac/Linux shell scripts need to be installed as PROGRAMS to have execute permission
+    file(GLOB python_scripts "${LY_ROOT_FOLDER}/python/*.sh")
+    install(PROGRAMS
+        ${python_scripts}
+        DESTINATION ./python
     )
 
     # Registry

cmake/Platform/Mac/Configurations_mac.cmake

@@ -28,7 +28,9 @@ else()
 endif()
 
 # Signing
-ly_set(CMAKE_XCODE_ATTRIBUTE_OTHER_CODE_SIGN_FLAGS --deep)
+# The "-o linker-signed" flag is required as a work-around for the following CMake issue:
+# https://gitlab.kitware.com/cmake/cmake/-/issues/21854
+ly_set(CMAKE_XCODE_ATTRIBUTE_OTHER_CODE_SIGN_FLAGS "--deep -o linker-signed")
 
 # Generate scheme files for Xcode
 ly_set(CMAKE_XCODE_GENERATE_SCHEME TRUE)

cmake/Platform/Mac/Install_mac.cmake

@@ -5,7 +5,47 @@
 #
 #
 
-# Empty implementations for untested platforms to fix build errors.
+#! ly_install_target_override: Mac specific target installation
+function(ly_install_target_override)
 
-function(ly_setup_o3de_install)
+    set(options)
+    set(oneValueArgs TARGET ARCHIVE_DIR LIBRARY_DIR RUNTIME_DIR LIBRARY_SUBDIR RUNTIME_SUBDIR)
+    set(multiValueArgs)
+    cmake_parse_arguments(ly_platform_install_target "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+
+    get_property(install_component TARGET ${ly_platform_install_target_TARGET} PROPERTY INSTALL_COMPONENT)
+
+    # For bundles on Mac, we set the icons by passing in a path to the Images.xcassets directory.
+    # However, the CMake install command expects paths to files for the the RESOURCE property.
+    # More details can be found in the CMake issue: https://gitlab.kitware.com/cmake/cmake/-/issues/22409
+    get_target_property(is_bundle ${ly_platform_install_target_TARGET} MACOSX_BUNDLE)
+    if (${is_bundle})
+        get_target_property(cached_resources_dir ${ly_platform_install_target_TARGET} RESOURCE)
+        set_property(TARGET ${ly_platform_install_target_TARGET} PROPERTY RESOURCE "")
+    endif()
+    
+    install(
+        TARGETS ${ly_platform_install_target_TARGET}
+        ARCHIVE
+            DESTINATION ${ly_platform_install_target_ARCHIVE_DIR}/${PAL_PLATFORM_NAME}/$<CONFIG>
+            COMPONENT ${install_component}
+        LIBRARY
+            DESTINATION ${ly_platform_install_target_LIBRARY_DIR}/${PAL_PLATFORM_NAME}/$<CONFIG>/${ly_platform_install_target_LIBRARY_SUBDIR}
+            COMPONENT ${install_component}
+        RUNTIME
+            DESTINATION ${ly_platform_install_target_RUNTIME_DIR}/${PAL_PLATFORM_NAME}/$<CONFIG>/${ly_platform_install_target_RUNTIME_SUBDIR}
+            COMPONENT ${install_component}
+        BUNDLE
+            DESTINATION ${ly_platform_install_target_RUNTIME_DIR}/${PAL_PLATFORM_NAME}/$<CONFIG>/${ly_platform_install_target_RUNTIME_SUBDIR}
+            COMPONENT ${install_component}
+        RESOURCE
+            DESTINATION ${ly_platform_install_target_RUNTIME_DIR}/${PAL_PLATFORM_NAME}/$<CONFIG>/${ly_platform_install_target_RUNTIME_SUBDIR}/
+            COMPONENT ${install_component}
+    )
+
+    if (${is_bundle})
+        set_property(TARGET ${ly_platform_install_target_TARGET} PROPERTY RESOURCE ${cached_resources_dir})
+    endif()
 endfunction()
+
+include(cmake/Platform/Common/Install_common.cmake)