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# Don't let all these packages spam up with status messages, filter to only the
# important stuff.
# Don't change things however if the user has explicitly set
# CMAKE_MESSAGE_LOG_LEVEL
set(set_cmake_log_level FALSE)
if(NOT CMAKE_MESSAGE_LOG_LEVEL)
set(set_cmake_log_level TRUE)
set(CMAKE_MESSAGE_LOG_LEVEL NOTICE)
endif()
if(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.25")
set(system SYSTEM)
else()
message(
STATUS
"CMake 3.25 is required to suppress warnings originating in headers in external/ but you are using ${CMAKE_VERSION}, be prepared for some warnings"
)
set(system)
endif()
# Similarly, disable warnings for external projects
if(NOT SLANG_ENABLE_EXTERNAL_COMPILER_WARNINGS)
if(MSVC)
add_compile_options(/W0)
else()
add_compile_options(-w)
endif()
endif()
if(NOT ${SLANG_USE_SYSTEM_UNORDERED_DENSE})
add_subdirectory(unordered_dense EXCLUDE_FROM_ALL ${system})
endif()
# Miniz
if(NOT ${SLANG_USE_SYSTEM_MINIZ})
add_subdirectory(miniz EXCLUDE_FROM_ALL ${system})
set_property(TARGET miniz PROPERTY POSITION_INDEPENDENT_CODE ON)
# Work around https://github.com/richgel999/miniz/pull/292
get_target_property(miniz_c_launcher miniz C_COMPILER_LAUNCHER)
if(MSVC AND miniz_c_launcher MATCHES "ccache")
set_property(TARGET miniz PROPERTY C_COMPILER_LAUNCHER)
set_property(TARGET miniz PROPERTY MSVC_DEBUG_INFORMATION_FORMAT "")
endif()
endif()
# LZ4
if(NOT ${SLANG_USE_SYSTEM_LZ4})
set(LZ4_BUNDLED_MODE ON)
add_subdirectory(lz4/build/cmake EXCLUDE_FROM_ALL ${system})
if(MSVC)
target_compile_options(
lz4_static
PRIVATE /wd5045 /wd4820 /wd4711 /wd6385 /wd6262
)
endif()
endif()
# Vulkan headers
if(NOT ${SLANG_USE_SYSTEM_VULKAN_HEADERS})
add_subdirectory(vulkan EXCLUDE_FROM_ALL ${system})
endif()
# metal-cpp headers
add_library(metal-cpp INTERFACE)
target_include_directories(
metal-cpp
INTERFACE "${CMAKE_CURRENT_LIST_DIR}/metal-cpp"
)
# SPIRV-Headers
if(NOT ${SLANG_USE_SYSTEM_SPIRV_HEADERS})
add_subdirectory(spirv-headers EXCLUDE_FROM_ALL ${system})
endif()
if(SLANG_ENABLE_SLANG_GLSLANG)
# SPIRV-Tools
set(SPIRV_TOOLS_BUILD_STATIC ON)
set(SPIRV_WERROR OFF)
set(SPIRV_HEADER_DIR "${CMAKE_CURRENT_LIST_DIR}/spirv-headers/")
set(SPIRV_SKIP_TESTS ON)
add_subdirectory(spirv-tools EXCLUDE_FROM_ALL ${system})
# glslang
set(SKIP_GLSLANG_INSTALL ON)
set(ENABLE_OPT ON)
set(ENABLE_PCH OFF)
add_subdirectory(glslang EXCLUDE_FROM_ALL ${system})
endif()
# imgui
add_library(imgui INTERFACE)
target_include_directories(imgui INTERFACE "${CMAKE_CURRENT_LIST_DIR}/imgui")
if(SLANG_ENABLE_SLANG_RHI)
# slang-rhi
set(SLANG_RHI_BINARY_DIR ${CMAKE_BINARY_DIR}/$<CONFIG>/bin)
set(SLANG_RHI_SLANG_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/include)
set(SLANG_RHI_SLANG_BINARY_DIR ${CMAKE_BINARY_DIR})
set(SLANG_RHI_BUILD_TESTS OFF)
set(SLANG_RHI_BUILD_EXAMPLES OFF)
if(SLANG_ENABLE_DX_ON_VK)
set(SLANG_RHI_HAS_D3D12 ON)
endif()
if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
set(SLANG_RHI_ENABLE_WGPU OFF)
endif()
add_subdirectory(slang-rhi)
endif()
# Tidy things up:
# Restore log level if we set it
if(set_cmake_log_level)
unset(CMAKE_MESSAGE_LOG_LEVEL)
endif()
# for this directory and all subdirectories, prepend
# `external/` to the IDE FOLDER property to every target
function(make_external dir)
get_property(external_targets DIRECTORY ${dir} PROPERTY BUILDSYSTEM_TARGETS)
foreach(external_target ${external_targets})
get_property(folder TARGET ${external_target} PROPERTY FOLDER)
set_property(
TARGET ${external_target}
PROPERTY FOLDER "external/${folder}"
)
endforeach()
get_property(subdirs DIRECTORY ${dir} PROPERTY SUBDIRECTORIES)
foreach(subdir ${subdirs})
make_external(${subdir})
endforeach()
endfunction()
make_external(.)
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