citra/CMakeModules/DownloadExternals.cmake

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# This function downloads a binary library package from our external repo.
# Params:
# 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
function(download_bundled_external remote_path lib_name prefix_var)
get_external_prefix(${lib_name} prefix)
if (NOT EXISTS "${prefix}")
message(STATUS "Downloading binaries for ${lib_name}...")
if (WIN32)
set(repo_base "ext-windows-bin/raw/master")
elseif (APPLE)
set(repo_base "ext-macos-bin/raw/main")
else()
message(FATAL_ERROR "Bundled libraries are unsupported for this OS.")
endif()
file(DOWNLOAD
https://github.com/citra-emu/${repo_base}/${remote_path}${lib_name}.7z
"${CMAKE_BINARY_DIR}/externals/${lib_name}.7z" SHOW_PROGRESS)
execute_process(COMMAND ${CMAKE_COMMAND} -E tar xf "${CMAKE_BINARY_DIR}/externals/${lib_name}.7z"
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/externals")
endif()
# For packages that include the /usr/local prefix, include it in the prefix path.
if (EXISTS "${prefix}/usr/local")
set(prefix "${prefix}/usr/local")
endif()
message(STATUS "Using bundled binaries at ${prefix}")
set(${prefix_var} "${prefix}" PARENT_SCOPE)
endfunction()
# This function downloads Qt using aqt.
# Params:
# target: Qt dependency to install. Specify a version number to download Qt, or "tools_(name)" for a specific build tool.
# prefix_var: Name of a variable which will be set with the path to the extracted contents.
function(download_qt_external target)
# Determine installation parameters for OS, architecture, and compiler
if (WIN32)
set(host "windows")
set(type "desktop")
if (MINGW)
set(arch_path "mingw81")
elseif ((MSVC_VERSION GREATER_EQUAL 1920 AND MSVC_VERSION LESS 1940) AND "x86_64" IN_LIST ARCHITECTURE)
if ("arm64" IN_LIST ARCHITECTURE)
set(arch_path "msvc2019_arm64")
elseif ("x86_64" IN_LIST ARCHITECTURE)
set(arch_path "msvc2019_64")
else()
message(FATAL_ERROR "Unsupported bundled Qt architecture. Disable CITRA_USE_BUNDLED_QT and provide your own.")
endif()
else()
message(FATAL_ERROR "Unsupported bundled Qt toolchain. Disable CITRA_USE_BUNDLED_QT and provide your own.")
endif()
set(arch "win64_${arch_path}")
elseif (APPLE)
set(host "mac")
if (IOS)
set(type "ios")
set(arch "ios")
set(arch_path "ios")
set(host_arch_path "macos")
else()
set(type "desktop")
set(arch "clang_64")
set(arch_path "macos")
endif()
else()
set(host "linux")
set(type "desktop")
set(arch "gcc_64")
set(arch_path "linux")
endif()
get_external_prefix(qt base_path)
file(MAKE_DIRECTORY "${base_path}")
if (target MATCHES "tools_.*")
set(prefix "${base_path}")
set(install_args install-tool --outputdir ${base_path} ${host} desktop ${target})
else()
set(prefix "${base_path}/${target}/${arch_path}")
if (host_arch_path)
set(host_flag "--autodesktop")
set(host_prefix "${base_path}/${target}/${host_arch_path}")
endif()
set(install_args install-qt --outputdir ${base_path} ${host} ${type} ${target} ${arch} ${host_flag} -m qtmultimedia)
endif()
if (NOT EXISTS "${prefix}")
message(STATUS "Downloading binaries for Qt...")
if (WIN32)
set(aqt_path "${base_path}/aqt.exe")
file(DOWNLOAD
https://github.com/miurahr/aqtinstall/releases/download/v3.1.4/aqt.exe
${aqt_path} SHOW_PROGRESS)
execute_process(COMMAND ${aqt_path} ${install_args}
WORKING_DIRECTORY ${base_path})
else()
# aqt does not offer binary releases for other platforms, so download and run from pip.
set(aqt_install_path "${base_path}/aqt")
file(MAKE_DIRECTORY "${aqt_install_path}")
execute_process(COMMAND python3 -m pip install --target=${aqt_install_path} aqtinstall
WORKING_DIRECTORY ${base_path})
execute_process(COMMAND ${CMAKE_COMMAND} -E env PYTHONPATH=${aqt_install_path} python3 -m aqt ${install_args}
WORKING_DIRECTORY ${base_path})
endif()
endif()
message(STATUS "Using downloaded Qt binaries at ${prefix}")
# Add the Qt prefix path so CMake can locate it.
list(APPEND CMAKE_PREFIX_PATH "${prefix}")
set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} PARENT_SCOPE)
if (DEFINED host_prefix)
message(STATUS "Using downloaded host Qt binaries at ${host_prefix}")
set(QT_HOST_PATH "${host_prefix}" CACHE STRING "")
endif()
endfunction()
function(download_moltenvk)
if (IOS)
set(MOLTENVK_PLATFORM "iOS")
else()
set(MOLTENVK_PLATFORM "macOS")
endif()
set(MOLTENVK_DIR "${CMAKE_BINARY_DIR}/externals/MoltenVK")
set(MOLTENVK_TAR "${CMAKE_BINARY_DIR}/externals/MoltenVK.tar")
if (NOT EXISTS ${MOLTENVK_DIR})
if (NOT EXISTS ${MOLTENVK_TAR})
file(DOWNLOAD https://github.com/KhronosGroup/MoltenVK/releases/latest/download/MoltenVK-all.tar
${MOLTENVK_TAR} SHOW_PROGRESS)
endif()
execute_process(COMMAND ${CMAKE_COMMAND} -E tar xf "${MOLTENVK_TAR}"
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/externals")
endif()
# Add the MoltenVK library path to the prefix so find_library can locate it.
list(APPEND CMAKE_PREFIX_PATH "${MOLTENVK_DIR}/MoltenVK/dylib/${MOLTENVK_PLATFORM}")
set(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} PARENT_SCOPE)
endfunction()
function(get_external_prefix lib_name prefix_var)
set(${prefix_var} "${CMAKE_BINARY_DIR}/externals/${lib_name}" PARENT_SCOPE)
endfunction()