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[cmake] refactor: Use CPM over submodules (#143)

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Transfers the majority of submodules and large externals to CPM, using source archives rather than full Git clones. Not only does this save massive amounts of clone and configure time, but dependencies are grabbed on-demand rather than being required by default. Additionally, CPM will (generally) automatically search for system dependencies, though certain dependencies have options to control this.

Testing shows gains ranging from 5x to 10x in terms of overall clone/configure time.

Reviewed-on: #143
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
This commit is contained in:
crueter 2025-08-04 04:50:14 +02:00
parent 04e5e64538
commit 51b170b470
Signed by: crueter
GPG key ID: 425ACD2D4830EBC6
4035 changed files with 709 additions and 1033458 deletions
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72
CMakeModules/DownloadExternals.cmake
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@ -6,36 +6,52 @@
# remote_path: path to the file to download, relative to the remote repository root
# prefix_var: name of a variable which will be set with the path to the extracted contents
set(CURRENT_MODULE_DIR ${CMAKE_CURRENT_LIST_DIR})
function(download_bundled_external remote_path lib_name prefix_var)
function(download_bundled_external remote_path lib_name cpm_key prefix_var)
set(package_base_url "https://github.com/eden-emulator/")
set(package_repo "no_platform")
set(package_extension "no_platform")
set(package_base_url "https://github.com/eden-emulator/")
set(package_repo "no_platform")
set(package_extension "no_platform")
if (WIN32)
set(package_repo "ext-windows-bin/raw/master/")
set(package_extension ".7z")
elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
set(package_repo "ext-linux-bin/raw/master/")
set(package_extension ".tar.xz")
elseif (ANDROID)
set(package_repo "ext-android-bin/raw/master/")
set(package_extension ".tar.xz")
else()
message(FATAL_ERROR "No package available for this platform")
endif()
set(package_url "${package_base_url}${package_repo}")
if (WIN32 OR FORCE_WIN_ARCHIVES)
set(CACHE_KEY "windows")
set(package_repo "ext-windows-bin/raw/master/")
set(package_extension ".7z")
elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
set(CACHE_KEY "linux")
set(package_repo "ext-linux-bin/raw/master/")
set(package_extension ".tar.xz")
elseif (ANDROID)
set(CACHE_KEY "android")
set(package_repo "ext-android-bin/raw/master/")
set(package_extension ".tar.xz")
else()
message(FATAL_ERROR "No package available for this platform")
endif()
set(package_url "${package_base_url}${package_repo}")
set(full_url ${package_url}${remote_path}${lib_name}${package_extension})
set(prefix "${CMAKE_BINARY_DIR}/externals/${lib_name}")
if (NOT EXISTS "${prefix}")
message(STATUS "Downloading binaries for ${lib_name}...")
file(DOWNLOAD
${package_url}${remote_path}${lib_name}${package_extension}
"${CMAKE_BINARY_DIR}/externals/${lib_name}${package_extension}" SHOW_PROGRESS)
execute_process(COMMAND ${CMAKE_COMMAND} -E tar xf "${CMAKE_BINARY_DIR}/externals/${lib_name}${package_extension}"
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/externals")
endif()
message(STATUS "Using bundled binaries at ${prefix}")
set(${prefix_var} "${prefix}" PARENT_SCOPE)
set(CPM_USE_LOCAL_PACKAGES OFF)
CPMAddPackage(
NAME ${cpm_key}
URL ${full_url}
DOWNLOAD_ONLY YES
CUSTOM_CACHE_KEY ${CACHE_KEY}
)
set(${prefix_var} "${${cpm_key}_SOURCE_DIR}" PARENT_SCOPE)
message(STATUS "Using bundled binaries at ${${cpm_key}_SOURCE_DIR}")
endfunction()
function(download_win_archives)
set(FORCE_WIN_ARCHIVES ON)
set(FFmpeg_EXT_NAME "ffmpeg-7.1.1")
download_bundled_external("ffmpeg/" ${FFmpeg_EXT_NAME} "ffmpeg-bundled" "")
# TODO(crueter): separate handling for arm64
set(SDL2_VER "SDL2-2.32.8")
download_bundled_external("sdl2/" ${SDL2_VER} "sdl2-bundled" "")
set(FORCE_WIN_ARCHIVES OFF)
endfunction()
function(download_moltenvk_external platform version)