add mgl library

Author: malytomas

.gitmodules

@@ -121,3 +121,6 @@
 [submodule "externals/wamr/zydis"]
 	path = externals/wamr/zydis
 	url = https://github.com/zyantific/zydis.git
+[submodule "externals/mgl/mgl"]
+	path = externals/mgl/mgl
+	url = https://github.com/openglonmetal/MGL.git

cmake/cage_copy_redist.cmake

@@ -27,6 +27,7 @@ function(cage_copy_redist)
 	cage_copy_redist_license("${cage_copy_redist_current_list_dir}/../externals/hsluv/hsluv.h" "hsluv" COPYONLY)
 	cage_copy_redist_license("${cage_copy_redist_current_list_dir}/../externals/jpeg/jpeg/LICENSE.md" "jpeg" COPYONLY)
 	cage_copy_redist_license("${cage_copy_redist_current_list_dir}/../externals/mbedtls/mbedtls/LICENSE" "mbedtls" COPYONLY)
+	cage_copy_redist_license("${cage_copy_redist_current_list_dir}/../externals/mgl/mgl/LICENSE" "mgl" COPYONLY)
 	cage_copy_redist_license("${cage_copy_redist_current_list_dir}/../externals/msdfgen/msdfgen/LICENSE.txt" "msdfgen" COPYONLY)
 	cage_copy_redist_license("${cage_copy_redist_current_list_dir}/../externals/ogg/ogg/COPYING" "ogg" COPYONLY)
 	cage_copy_redist_license("${cage_copy_redist_current_list_dir}/../externals/openxr-sdk/OpenXR-SDK/LICENSE" "openxr-sdk" COPYONLY)

externals/CMakeLists.txt

@@ -96,6 +96,7 @@ add_subdirectory(fastnoise)
 add_subdirectory(glad)
 add_subdirectory(glfw)
 add_subdirectory(glm)
+add_subdirectory(mgl)
 add_subdirectory(openxr-sdk)
 add_subdirectory(plf)
 add_subdirectory(simplefilewatcher)
@@ -191,6 +192,7 @@ external_target_properties(libzstd_static)
 external_target_properties(mbedcrypto)
 external_target_properties(mbedtls)
 external_target_properties(mbedx509)
+external_target_properties(mgl)
 external_target_properties(ogg)
 external_target_properties(openxr_loader)
 external_target_properties(p256m)

externals/glfw/CMakeLists.txt

@@ -2,6 +2,11 @@ message(STATUS "----------------------------------------------------------------
 message(STATUS "glfw")
 message(STATUS "----------------------------------------------------------------")
 
+if(APPLE)
+	message(STATUS "skipping on macos - it is provided with mgl")
+	return()
+endif()
+
 set(GLFW_BUILD_EXAMPLES OFF CACHE INTERNAL "Build the GLFW example programs")
 set(GLFW_BUILD_TESTS OFF CACHE INTERNAL "Build the GLFW test programs")
 set(GLFW_BUILD_DOCS OFF CACHE INTERNAL "Build the GLFW documentation")

externals/glm/CMakeLists.txt

@@ -2,6 +2,11 @@ message(STATUS "----------------------------------------------------------------
 message(STATUS "glm")
 message(STATUS "----------------------------------------------------------------")
 
+if(APPLE)
+	message(STATUS "skipping on macos - it is provided with mgl")
+	return()
+endif()
+
 add_library(glm INTERFACE)
 target_include_directories(glm INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}/glm")
 

externals/mgl/CMakeLists.txt

@@ -0,0 +1,21 @@
+message(STATUS "----------------------------------------------------------------")
+message(STATUS "mgl")
+message(STATUS "----------------------------------------------------------------")
+
+if(NOT APPLE)
+	message(STATUS "mgl is used on macos only - skipping")
+	return()
+endif()
+
+include(ExternalProject)
+
+ExternalProject_Add(mgl
+	PREFIX ${CMAKE_CURRENT_BINARY_DIR}/mgl_build
+	SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/mgl
+	CONFIGURE_COMMAND "" # skip ./configure
+	BUILD_COMMAND make
+	INSTALL_COMMAND "" # skip installation
+)
+
+add_library(glfw ALIAS mgl)
+add_library(glm ALIAS mgl)