diff options
Diffstat (limited to 'cmake/LLVM.cmake')
| -rw-r--r-- | cmake/LLVM.cmake | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/cmake/LLVM.cmake b/cmake/LLVM.cmake index 10a31e2d1..a9afdb3cb 100644 --- a/cmake/LLVM.cmake +++ b/cmake/LLVM.cmake @@ -38,3 +38,78 @@ function(clang_target_from_libs target_name) add_supported_cxx_flags(${target_name} INTERFACE -fno-rtti /GR-) endif() endfunction() + +function(fetch_or_build_slang_llvm) + if(SLANG_SLANG_LLVM_FLAVOR STREQUAL "FETCH_BINARY") + install_fetched_shared_library("slang-llvm" "${SLANG_SLANG_LLVM_BINARY_URL}") + elseif(SLANG_SLANG_LLVM_FLAVOR STREQUAL "FETCH_BINARY_IF_POSSIBLE") + if(SLANG_SLANG_LLVM_BINARY_URL) + install_fetched_shared_library("slang-llvm" "${SLANG_SLANG_LLVM_BINARY_URL}" IGNORE_FAILURE) + if(NOT TARGET slang-llvm) + message(WARNING "Unable to fetch slang-llvm prebuilt binary, configuring without LLVM support") + endif() + endif() + elseif(SLANG_SLANG_LLVM_FLAVOR STREQUAL "USE_SYSTEM_LLVM") + find_package(LLVM 13.0 REQUIRED CONFIG) + find_package(Clang REQUIRED CONFIG) + + llvm_target_from_components(llvm-dep filecheck native orcjit) + clang_target_from_libs( + clang-dep + clangBasic + clangCodeGen + clangDriver + clangLex + clangFrontend + clangFrontendTool + ) + slang_add_target( + source/slang-llvm + MODULE + LINK_WITH_PRIVATE core compiler-core llvm-dep clang-dep + # We include slang.h, but don't need to link with it + INCLUDE_FROM_PRIVATE slang + # This uses the SLANG_DLL_EXPORT macro from slang.h, so make sure to set + # SLANG_DYNAMIC and SLANG_DYNAMIC_EXPORT + EXPORT_MACRO_PREFIX SLANG + INSTALL + INSTALL_COMPONENT slang-llvm + ) + # If we don't include this, then the symbols in the LLVM linked here may + # conflict with those of other LLVMs linked at runtime, for instance in mesa. + add_supported_cxx_linker_flags(slang-llvm PRIVATE "-Wl,--exclude-libs,ALL") + + # The LLVM headers need a warning disabling, which somehow slips through \external + if(MSVC) + target_compile_options(slang-llvm PRIVATE -wd4244) + endif() + + # TODO: Put a check here that libslang-llvm.so doesn't have a 'NEEDED' + # directive for libLLVM-13.so, it's almost certainly going to break at + # runtime in surprising ways when linked alongside Mesa (or anything else + # pulling in libLLVM.so) + endif() + + if(SLANG_ENABLE_PREBUILT_BINARIES) + if(CMAKE_SYSTEM_NAME MATCHES "Windows") + # DX Agility SDK requires the D3D12*.DLL files to be placed under a sub-directory, "D3D12". + # https://devblogs.microsoft.com/directx/gettingstarted-dx12agility/#d3d12sdkpath-should-not-be-the-same-directory-as-the-application-exe + file(GLOB prebuilt_binaries "${slang_SOURCE_DIR}/external/slang-binaries/bin/windows-x64/*") + file(GLOB prebuilt_d3d12_binaries "${slang_SOURCE_DIR}/external/slang-binaries/bin/windows-x64/[dD]3[dD]12*") + list(REMOVE_ITEM prebuilt_binaries ${prebuilt_d3d12_binaries}) + add_custom_target( + copy-prebuilt-binaries ALL + COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/$<CONFIG>/${runtime_subdir} + COMMAND ${CMAKE_COMMAND} -E copy_if_different + ${prebuilt_binaries} + ${CMAKE_BINARY_DIR}/$<CONFIG>/${runtime_subdir} + COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_BINARY_DIR}/$<CONFIG>/${runtime_subdir}/D3D12 + COMMAND ${CMAKE_COMMAND} -E copy_if_different + ${prebuilt_d3d12_binaries} + ${CMAKE_BINARY_DIR}/$<CONFIG>/${runtime_subdir}/D3D12 + VERBATIM + ) + set_target_properties(copy-prebuilt-binaries PROPERTIES FOLDER external) + endif() + endif() +endfunction() |