cmake: Add changes for CMake build framework 3.0

New code path only taken if OBS_CMAKE_VERSION is set to 3.0.0 or
greater, old functionality remains unchanged.

.cmake-format.json

@@ -1,13 +1,46 @@
 {
-    "additional_commands": {
-      "find_qt": {
-        "flags": [],
-        "kwargs": {
-          "COMPONENTS": "+",
-          "COMPONENTS_WIN": "+",
-          "COMPONENTS_MACOS": "+",
-          "COMPONENTS_LINUX": "+"
+  "format": {
+    "line_width": 120,
+    "tab_size": 2,
+    "enable_sort": true,
+    "autosort": true
+  },
+  "additional_commands": {
+    "find_qt": {
+      "flags": [],
+      "kwargs": {
+        "COMPONENTS": "+",
+        "COMPONENTS_WIN": "+",
+        "COMPONENTS_MACOS": "+",
+        "COMPONENTS_LINUX": "+"
+      }
+    },
+    "set_target_properties_obs": {
+      "pargs": 1,
+      "flags": [],
+      "kwargs": {
+        "PROPERTIES": {
+          "kwargs": {
+            "PREFIX": 1,
+            "OUTPUT_NAME": 1,
+            "FOLDER": 1,
+            "VERSION": 1,
+            "SOVERSION": 1,
+            "FRAMEWORK": 1,
+            "BUNDLE": 1,
+            "AUTOMOC": 1,
+            "AUTOUIC": 1,
+            "AUTORCC": 1,
+            "AUTOUIC_SEARCH_PATHS": 1,
+            "BUILD_RPATH": 1,
+            "INSTALL_RPATH": 1,
+            "XCODE_ATTRIBUTE_CLANG_ENABLE_OBJC_ARC": 1,
+            "XCODE_ATTRIBUTE_CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION": 1,
+            "XCODE_ATTRIBUTE_GCC_WARN_SHADOW":1 ,
+            "LIBRARY_OUTPUT_DIRECTORY": 1
+          }
         }
       }
     }
+  }
 }

.gitignore

@@ -3,25 +3,21 @@
 *.dll
 *.dylib
 *.so
+*.plugin
+*.framework
+*.systemextension
 
 #cmake
-/cmbuild/
-/build/
-/build32/
-/build64/
-/release/
-/release32/
-/release64/
-/debug/
-/debug32/
-/debug64/
-/builds/
+/build*/
+/release*/
+/debug*/
 .vs/
 *.o.d
 *.ninja
 .ninja*
 .dirstamp
 /cmake/.CMakeBuildNumber
+.deps
 
 #xcode
 *.xcodeproj/

CMakeLists.txt

@@ -1,15 +1,44 @@
-cmake_minimum_required(VERSION 3.16...3.21)
+cmake_minimum_required(VERSION 3.16...3.25)
+
+if(OBS_CMAKE_VERSION VERSION_GREATER_EQUAL 3.0.0)
+  include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/common/bootstrap.cmake")
+
+  project(obs-studio VERSION ${OBS_VERSION_CANONICAL})
+
+  if(CMAKE_SIZEOF_VOID_P EQUAL 4)
+    include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/32bit/projects.cmake")
+    return()
+  endif()
+
+  include(compilerconfig)
+  include(defaults)
+  include(helpers)
+
+  option(ENABLE_RELEASE_BUILD "Enable all options for a release build" OFF)
+  option(ENABLE_UI "Enable building with UI (requires Qt)" ON)
+  option(ENABLE_SCRIPTING "Enable scripting support" ON)
+  option(ENABLE_HEVC "Enable HEVC encoders" ON)
+
+  add_subdirectory(libobs)
+  if(OS_WINDOWS)
+    add_subdirectory(libobs-d3d11)
+    add_subdirectory(libobs-winrt)
+  endif()
+  add_subdirectory(libobs-opengl)
+  add_subdirectory(plugins)
+  add_subdirectory(UI)
+
+  message_configuration()
+  return()
+endif()
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/cmake/Modules")
 include(VersionConfig)
 
 # Prohibit in-source builds
 if("${CMAKE_BINARY_DIR}" STREQUAL "${CMAKE_SOURCE_DIR}")
-  message(
-    FATAL_ERROR
-      "OBS: You cannot build in a source directory (or any directory with "
-      "CMakeLists.txt file). Please make a build subdirectory. Feel free to "
-      "remove CMakeCache.txt and CMakeFiles.")
+  message(FATAL_ERROR "OBS: You cannot build in a source directory (or any directory with CMakeLists.txt file)."
+                      "Please make a build subdirectory. Feel free to remove CMakeCache.txt and CMakeFiles.")
 endif()
 
 project(obs-studio VERSION ${OBS_VERSION_CANONICAL})
@@ -25,32 +54,24 @@ include(CompilerConfig)
 if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE
       "RelWithDebInfo"
-      CACHE STRING
-            "OBS build type [Release, RelWithDebInfo, Debug, MinSizeRel]" FORCE)
-  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Release RelWithDebInfo
-                                               Debug MinSizeRel)
+      CACHE STRING "OBS build type [Release, RelWithDebInfo, Debug, MinSizeRel]" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS Release RelWithDebInfo Debug MinSizeRel)
 endif()
 
 # Global project options
 option(ENABLE_HEVC "Enable HEVC encoders" ON)
 if(ENABLE_HEVC)
   add_compile_definitions(ENABLE_HEVC)
 endif()
-option(BUILD_FOR_DISTRIBUTION "Build for distribution (enables optimisations)"
-       OFF)
+option(BUILD_FOR_DISTRIBUTION "Build for distribution (enables optimizations)" OFF)
 option(ENABLE_UI "Enable building with UI (requires Qt)" ON)
 option(ENABLE_SCRIPTING "Enable scripting support" ON)
 option(USE_LIBCXX "Use libc++ instead of libstdc++" ${APPLE})
-option(
-  BUILD_TESTS
-  "Build test directory (includes test sources and possibly a platform test executable)"
-  OFF)
+option(BUILD_TESTS "Build test directory (includes test sources and possibly a platform test executable)" OFF)
 
 if(OS_WINDOWS)
-  option(
-    INSTALLER_RUN
-    "Build a multiarch installer (needs to run independently after both archs have compiled) (Windows)"
-    OFF)
+  option(INSTALLER_RUN
+         "Build a multiarch installer (needs to run independently after both archs have compiled) (Windows)" OFF)
 
 elseif(OS_POSIX)
   option(LINUX_PORTABLE "Build portable version (Linux)" OFF)