refactor(cmake): split CMakeLists into modules (#1587)

cmake/prep/build_version.cmake

@@ -0,0 +1,58 @@
+# Check if env vars are defined before attempting to access them, variables will be defined even if blank
+if((DEFINED ENV{BRANCH}) AND (DEFINED ENV{BUILD_VERSION}) AND (DEFINED ENV{COMMIT}))  # cmake-lint: disable=W0106
+    if(($ENV{BRANCH} STREQUAL "master") AND (NOT $ENV{BUILD_VERSION} STREQUAL ""))
+        # If BRANCH is "master" and BUILD_VERSION is not empty, then we are building a master branch
+        MESSAGE("Got from CI master branch and version $ENV{BUILD_VERSION}")
+        set(PROJECT_VERSION $ENV{BUILD_VERSION})
+    elseif((DEFINED ENV{BRANCH}) AND (DEFINED ENV{COMMIT}))
+        # If BRANCH is set but not BUILD_VERSION we are building nightly, we gather only the commit hash
+        MESSAGE("Got from CI $ENV{BRANCH} branch and commit $ENV{COMMIT}")
+        set(PROJECT_VERSION ${PROJECT_VERSION}.$ENV{COMMIT})
+    endif()
+    # Generate Sunshine Version based of the git tag
+    # https://github.com/nocnokneo/cmake-git-versioning-example/blob/master/LICENSE
+else()
+    find_package(Git)
+    if(GIT_EXECUTABLE)
+        MESSAGE("${CMAKE_CURRENT_SOURCE_DIR}")
+        get_filename_component(SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR} DIRECTORY)
+        #Get current Branch
+        execute_process(
+                COMMAND ${GIT_EXECUTABLE} rev-parse --abbrev-ref HEAD
+                #WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+                OUTPUT_VARIABLE GIT_DESCRIBE_BRANCH
+                RESULT_VARIABLE GIT_DESCRIBE_ERROR_CODE
+                OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+        # Gather current commit
+        execute_process(
+                COMMAND ${GIT_EXECUTABLE} rev-parse --short HEAD
+                #WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+                OUTPUT_VARIABLE GIT_DESCRIBE_VERSION
+                RESULT_VARIABLE GIT_DESCRIBE_ERROR_CODE
+                OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+        # Check if Dirty
+        execute_process(
+                COMMAND ${GIT_EXECUTABLE} diff --quiet --exit-code
+                #WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+                RESULT_VARIABLE GIT_IS_DIRTY
+                OUTPUT_STRIP_TRAILING_WHITESPACE
+        )
+        if(NOT GIT_DESCRIBE_ERROR_CODE)
+            MESSAGE("Sunshine Branch: ${GIT_DESCRIBE_BRANCH}")
+            if(NOT GIT_DESCRIBE_BRANCH STREQUAL "master")
+                set(PROJECT_VERSION ${PROJECT_VERSION}.${GIT_DESCRIBE_VERSION})
+                MESSAGE("Sunshine Version: ${GIT_DESCRIBE_VERSION}")
+            endif()
+            if(GIT_IS_DIRTY)
+                set(PROJECT_VERSION ${PROJECT_VERSION}.dirty)
+                MESSAGE("Git tree is dirty!")
+            endif()
+        else()
+            MESSAGE(ERROR ": Got git error while fetching tags: ${GIT_DESCRIBE_ERROR_CODE}")
+        endif()
+    else()
+        MESSAGE(WARNING ": Git not found, cannot find git version")
+    endif()
+endif()

cmake/prep/constants.cmake

@@ -0,0 +1,5 @@
+# source assets will be installed from this directory
+set(SUNSHINE_SOURCE_ASSETS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/src_assets")
+
+# enable system tray, we will disable this later if we cannot find the required package config on linux
+set(SUNSHINE_TRAY 1)

cmake/prep/options.cmake

@@ -0,0 +1,30 @@
+# if this option is set, the build will exit after configuring special package configuration files
+option(SUNSHINE_CONFIGURE_ONLY "Configure special files only, then exit." OFF)
+
+option(SUNSHINE_ENABLE_TRAY "Enable system tray icon. This option will be ignored on macOS." ON)
+
+if(APPLE)
+    option(SUNSHINE_CONFIGURE_PORTFILE
+            "Configure macOS Portfile. Recommended to use with SUNSHINE_CONFIGURE_ONLY" OFF)
+    option(SUNSHINE_PACKAGE_MACOS
+            "Should only be used when creating a macOS package/dmg." OFF)
+elseif(UNIX)  # Linux
+    option(SUNSHINE_BUILD_APPIMAGE
+            "Enable an AppImage build." OFF)
+    option(SUNSHINE_BUILD_FLATPAK
+            "Enable a Flatpak build." OFF)
+    option(SUNSHINE_CONFIGURE_PKGBUILD
+            "Configure files required for AUR. Recommended to use with SUNSHINE_CONFIGURE_ONLY" OFF)
+    option(SUNSHINE_CONFIGURE_FLATPAK_MAN
+            "Configure manifest file required for Flatpak build. Recommended to use with SUNSHINE_CONFIGURE_ONLY" OFF)
+
+    # Linux capture methods
+    option(SUNSHINE_ENABLE_CUDA
+            "Enable cuda specific code." ON)
+    option(SUNSHINE_ENABLE_DRM
+            "Enable KMS grab if available." ON)
+    option(SUNSHINE_ENABLE_WAYLAND
+            "Enable building wayland specific code." ON)
+    option(SUNSHINE_ENABLE_X11
+            "Enable X11 grab if available." ON)
+endif()

cmake/prep/special_package_configuration.cmake

@@ -0,0 +1,40 @@
+if (APPLE)
+    if(${SUNSHINE_CONFIGURE_PORTFILE})
+        configure_file(packaging/macos/Portfile Portfile @ONLY)
+    endif()
+elseif (UNIX)
+    # configure the .desktop file
+    if(${SUNSHINE_BUILD_APPIMAGE})
+        configure_file(packaging/linux/AppImage/sunshine.desktop sunshine.desktop @ONLY)
+    elseif(${SUNSHINE_BUILD_FLATPAK})
+        configure_file(packaging/linux/flatpak/sunshine.desktop sunshine.desktop @ONLY)
+        configure_file(packaging/linux/flatpak/sunshine_kms.desktop sunshine_kms.desktop @ONLY)
+    else()
+        configure_file(packaging/linux/sunshine.desktop sunshine.desktop @ONLY)
+    endif()
+
+    # configure metadata file
+    configure_file(packaging/linux/sunshine.appdata.xml sunshine.appdata.xml @ONLY)
+
+    # configure service
+    configure_file(packaging/linux/sunshine.service.in sunshine.service @ONLY)
+
+    # configure the arch linux pkgbuild
+    if(${SUNSHINE_CONFIGURE_PKGBUILD})
+        configure_file(packaging/linux/Arch/PKGBUILD PKGBUILD @ONLY)
+    endif()
+
+    # configure the flatpak manifest
+    if(${SUNSHINE_CONFIGURE_FLATPAK_MAN})
+        configure_file(packaging/linux/flatpak/dev.lizardbyte.sunshine.yml dev.lizardbyte.sunshine.yml @ONLY)
+    endif()
+endif()
+
+# return if configure only is set
+if(${SUNSHINE_CONFIGURE_ONLY})
+    # message
+    message(STATUS "SUNSHINE_CONFIGURE_ONLY: ON, exiting...")
+    set(END_BUILD ON)
+else()
+    set(END_BUILD OFF)
+endif()