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[SYCL] Add libsycl, a SYCL RT library implementation project (#144372)

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This patch introduces libsycl, a SYCL runtime library implementation, as
a top-level LLVM runtime project.
SYCL spec:
https://registry.khronos.org/SYCL/specs/sycl-2020/html/sycl-2020.html

Commit contains the basic folder layout and CMake infrastructure to
build a dummy SYCL library.

This is part of the SYCL support upstreaming effort. The relevant RFCs
can be found here:


https://discourse.llvm.org/t/rfc-add-full-support-for-the-sycl-programming-model/74080
https://discourse.llvm.org/t/rfc-sycl-runtime-upstreaming/74479

Upcoming PRs:
- UR offloading library fetch & build 
- partial implementation of sycl::platform: requires offloading layer,
requires classes for backend loading & enumeration.

---------

Signed-off-by: Tikhomirova, Kseniya <kseniya.tikhomirova@intel.com>
Co-authored-by: Alexey Bader <alexey.bader@intel.com>
This commit is contained in:
Kseniya Tikhomirova 2025-07-31 20:28:39 +02:00 committed by GitHub
parent 3a18fe33f0
commit 4cec4938c6
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
16 changed files with 816 additions and 2 deletions
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BasedOnStyle: LLVM
# Preferred indentions of preprocessor statements.
IndentPPDirectives: AfterHash

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Checks: >
-*,
clang-analyzer-*,
clang-diagnostic-*,
cppcoreguidelines-*,
-cppcoreguidelines-pro-bounds-array-to-pointer-decay,
-cppcoreguidelines-pro-bounds-constant-array-index,
-cppcoreguidelines-pro-bounds-pointer-arithmetic,
-cppcoreguidelines-pro-type-member-init,
-cppcoreguidelines-pro-type-union-access,
google-*,
-google-build-using-namespace,
-google-explicit-constructor,
-google-runtime-references,
misc-*,
-misc-macro-parentheses,
-misc-unused-parameters

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#===============================================================================
# Setup Project
#===============================================================================
cmake_minimum_required(VERSION 3.20.0)
set(LLVM_SUBPROJECT_TITLE "libsycl")
set(LIBSYCL_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
set(LIBSYCL_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED YES)
set(CMAKE_CXX_EXTENSIONS OFF)
#===============================================================================
# Limitations
#===============================================================================
if (CMAKE_SYSTEM_NAME STREQUAL Windows AND NOT MSVC)
# Build with other compilers is not configured, not guaranteed and not tested.
message(FATAL_ERROR
"When compiling for Windows, libsycl requires a"
" version of Microsoft Visual C++ or another compiler"
" that uses the Visual C++ cl command-line syntax.")
endif()
#===============================================================================
# Setup CMake Options
#===============================================================================
option(LIBSYCL_ENABLE_WERROR "Treat all warnings as errors in the libsycl project" OFF)
option(LIBSYCL_ENABLE_PEDANTIC "Compile with pedantic enabled." OFF)
#===============================================================================
# Configure System
#===============================================================================
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
set(LIBSYCL_SHARED_OUTPUT_NAME "sycl" CACHE STRING "Output name for the shared libsycl runtime library.")
if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
set(LIBSYCL_TARGET_SUBDIR ${LLVM_DEFAULT_TARGET_TRIPLE})
if(LIBSYCL_LIBDIR_SUBDIR)
string(APPEND LIBSYCL_TARGET_SUBDIR /${LIBSYCL_LIBDIR_SUBDIR})
endif()
cmake_path(NORMAL_PATH LIBSYCL_TARGET_SUBDIR)
set(LIBSYCL_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LIBSYCL_TARGET_SUBDIR})
set(LIBSYCL_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LIBSYCL_TARGET_SUBDIR} CACHE STRING
"Path where built libsycl libraries should be installed.")
unset(LIBSYCL_TARGET_SUBDIR)
else()
if(LLVM_LIBRARY_OUTPUT_INTDIR)
set(LIBSYCL_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
else()
set(LIBSYCL_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBSYCL_LIBDIR_SUFFIX})
endif()
set(LIBSYCL_INSTALL_LIBRARY_DIR lib${LIBSYCL_LIBDIR_SUFFIX} CACHE STRING
"Path where built libsycl libraries should be installed.")
endif()
set(LIBSYCL_INCLUDE_DIR include)
set(LIBSYCL_BUILD_INCLUDE_DIR ${LLVM_BINARY_DIR}/${LIBSYCL_INCLUDE_DIR})
set(LIBSYCL_SOURCE_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIBSYCL_LIBRARY_DIR})
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIBSYCL_LIBRARY_DIR})
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${LIBSYCL_LIBRARY_DIR})
set(LIBSYCL_MAJOR_VERSION 0)
set(LIBSYCL_MINOR_VERSION 1)
set(LIBSYCL_PATCH_VERSION 0)
set(LIBSYCL_VERSION_STRING "${LIBSYCL_MAJOR_VERSION}.${LIBSYCL_MINOR_VERSION}.${LIBSYCL_PATCH_VERSION}")
set(LIBSYCL_ABI_NAMESPACE "__V${LIBSYCL_MAJOR_VERSION}" CACHE STRING
"The inline ABI namespace used by libsycl. It defaults to __Vn where `n` is the current ABI version.")
if (NOT LIBSYCL_ABI_NAMESPACE MATCHES "__V.*")
message(FATAL_ERROR "LIBSYCL_ABI_NAMESPACE must be a reserved identifier, got '${LIBSYCL_ABI_NAMESPACE}'.")
endif()
#===============================================================================
# Setup build & install rules
#===============================================================================
# Generate headers
configure_file("${LIBSYCL_SOURCE_DIR}/src/version.hpp.in" "${LIBSYCL_BUILD_INCLUDE_DIR}/sycl/__impl/version.hpp")
# Install generated headers.
install(FILES
"${LIBSYCL_BUILD_INCLUDE_DIR}/sycl/__impl/version.hpp"
DESTINATION "${LIBSYCL_INCLUDE_DIR}/sycl/__impl"
COMPONENT sycl-headers)
# This is a workaround to detect changes (add or modify) in subtree which
# are not detected by copy_directory command.
file(GLOB_RECURSE HEADERS_IN_SYCL_DIR CONFIGURE_DEPENDS "${LIBSYCL_SOURCE_INCLUDE_DIR}/sycl/*")
file(GLOB_RECURSE HEADERS_IN_CL_DIR CONFIGURE_DEPENDS "${LIBSYCL_SOURCE_INCLUDE_DIR}/CL/*")
string(REPLACE "${LIBSYCL_SOURCE_INCLUDE_DIR}" "${LIBSYCL_BUILD_INCLUDE_DIR}"
OUT_HEADERS_IN_SYCL_DIR "${HEADERS_IN_SYCL_DIR}")
string(REPLACE "${LIBSYCL_SOURCE_INCLUDE_DIR}/CL" "${LIBSYCL_BUILD_INCLUDE_DIR}/CL"
OUT_HEADERS_IN_CL_DIR "${HEADERS_IN_CL_DIR}")
# Copy SYCL headers from sources to build directory
add_custom_target(sycl-headers
DEPENDS ${OUT_HEADERS_IN_SYCL_DIR}
${OUT_HEADERS_IN_CL_DIR})
add_custom_command(
OUTPUT ${OUT_HEADERS_IN_SYCL_DIR}
${OUT_HEADERS_IN_CL_DIR}
DEPENDS ${HEADERS_IN_SYCL_DIR}
${HEADERS_IN_CL_DIR}
COMMAND ${CMAKE_COMMAND} -E copy_directory ${LIBSYCL_SOURCE_INCLUDE_DIR}/sycl ${LIBSYCL_BUILD_INCLUDE_DIR}/sycl
COMMAND ${CMAKE_COMMAND} -E copy_directory ${LIBSYCL_SOURCE_INCLUDE_DIR}/CL ${LIBSYCL_BUILD_INCLUDE_DIR}/CL
COMMENT "Copying SYCL headers...")
install(DIRECTORY "${LIBSYCL_SOURCE_INCLUDE_DIR}/sycl" DESTINATION ${LIBSYCL_INCLUDE_DIR} COMPONENT sycl-headers)
install(DIRECTORY "${LIBSYCL_SOURCE_INCLUDE_DIR}/CL" DESTINATION ${LIBSYCL_INCLUDE_DIR} COMPONENT sycl-headers)
set(LIBSYCL_RT_LIBS ${LIBSYCL_SHARED_OUTPUT_NAME})
add_subdirectory(src)
add_custom_target(libsycl-runtime-libraries
DEPENDS ${LIBSYCL_RT_LIBS}
)

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## SYCL runtime library
The libsycl subproject is an implementation of the SYCL runtime library as defined by the
[SYCL 2020 specification](https://registry.khronos.org/SYCL/specs/sycl-2020/html/sycl-2020.html).
Subproject documentation is available at: [SYCL RT documentation](./docs).
libsycl runtime library and headers require C++17 support or higher.
### How to use libsycl with Clang
TODO
#### How to build
TODO
# License
See [LICENSE](./LICENSE.TXT) for details.

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=====================
SYCL runtime implementation
=====================
.. contents::
:local:
.. _index:
Current Status
========
The implementation is in the very early stages of upstreaming. The first milestone is to get
support for a simple SYCL application with device code using Unified Shared Memory:
.. code-block:: c++
#include <sycl/sycl.hpp>
class TestKernel;
int main() {
sycl::queue q;
const size_t dataSize = 32;
int *dataPtr = sycl::malloc_shared<int>(32, q);
for (int i = 0; i < dataSize; ++i)
dataPtr[i] = 0;
q.submit([&](sycl::handler &cgh) {
cgh.parallel_for<TestKernel>(
sycl::range<1>(dataSize),
[=](sycl::id<1> idx) { dataPtr[idx] = idx[0]; });
});
q.wait();
bool error = false;
for (int i = 0; i < dataSize; ++i)
if (dataPtr[i] != i) error = true;
free(dataPtr, q);
return error;
}
This requires at least partial support of the following functionality on the libsycl side:
* ``sycl::platform`` class
* ``sycl::device`` class
* ``sycl::context`` class
* ``sycl::queue`` class
* ``sycl::handler`` class
* ``sycl::id`` and ``sycl::range`` classes
* Unified shared memory allocation/deallocation
* Program manager, an internal component for retrieving and using device images from the multi-architectural binaries
Build steps
========
To build LLVM with libsycl runtime enabled the following script can be used.
.. code-block:: console
#!/bin/sh
build_llvm=`pwd`/build-llvm
installprefix=`pwd`/install
llvm=`pwd`
mkdir -p $build_llvm
mkdir -p $installprefix
cmake -G Ninja -S $llvm/llvm -B $build_llvm \
-DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra" \
-DLLVM_INSTALL_UTILS=ON \
-DCMAKE_INSTALL_PREFIX=$installprefix \
-DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libsycl;libunwind" \
-DCMAKE_BUILD_TYPE=Release
ninja -C $build_llvm install

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file is a SYCL 1.2.1 standard header file. Deprecated.
///
//===----------------------------------------------------------------------===//
#ifndef _LIBSYCL_CL_SYCL_HPP
#define _LIBSYCL_CL_SYCL_HPP
#if defined(__clang__)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wpedantic"
# warning "CL/sycl.hpp is deprecated, use sycl/sycl.hpp"
# pragma clang diagnostic pop
#endif
#include <sycl/sycl.hpp>
namespace cl {
namespace sycl = ::sycl;
}
#endif // _LIBSYCL_CL_SYCL_HPP

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contains the declaration of the macros defining attributes for
/// exported methods and defining API namespaces.
///
//===----------------------------------------------------------------------===//
#ifndef _LIBSYCL___IMPL_DETAIL_CONFIG_HPP
#define _LIBSYCL___IMPL_DETAIL_CONFIG_HPP
#include <sycl/__impl/version.hpp>
#define _LIBSYCL_BEGIN_UNVERSIONED_NAMESPACE_SYCL namespace sycl {
#define _LIBSYCL_END_UNVERSIONED_NAMESPACE_SYCL }
#define _LIBSYCL_BEGIN_NAMESPACE_SYCL \
_LIBSYCL_BEGIN_UNVERSIONED_NAMESPACE_SYCL inline namespace _LIBSYCL_ABI_NAMESPACE {
#define _LIBSYCL_END_NAMESPACE_SYCL \
} \
_LIBSYCL_END_UNVERSIONED_NAMESPACE_SYCL
#ifndef __SYCL_DEVICE_ONLY__
# ifndef _LIBSYCL_EXPORT
# ifdef _WIN32
# define _LIBSYCL_DLL_LOCAL
# ifdef _LIBSYCL_BUILDING_LIBRARY
# define _LIBSYCL_EXPORT __declspec(dllexport)
# else
# define _LIBSYCL_EXPORT __declspec(dllimport)
# endif //_LIBSYCL_BUILDING_LIBRARY
# else // _WIN32
# define _LIBSYCL_DLL_LOCAL [[__gnu__::__visibility__("hidden")]]
# define _LIBSYCL_EXPORT [[__gnu__::__visibility__("default")]]
# endif // _WIN32
# endif // _LIBSYCL_EXPORT
#else // __SYCL_DEVICE_ONLY__
# ifndef _LIBSYCL_EXPORT
# define _LIBSYCL_EXPORT
# define _LIBSYCL_DLL_LOCAL
# endif
#endif // __SYCL_DEVICE_ONLY__
#endif // _LIBSYCL___IMPL_DETAIL_CONFIG_HPP

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contains the declaration of the SYCL platform class, which
/// encapsulates a single platform on which kernel functions may be executed.
///
//===----------------------------------------------------------------------===//
#ifndef _LIBSYCL___IMPL_PLATFORM_HPP
#define _LIBSYCL___IMPL_PLATFORM_HPP
#include <sycl/__impl/detail/config.hpp>
_LIBSYCL_BEGIN_NAMESPACE_SYCL
class _LIBSYCL_EXPORT platform {
public:
/// Constructs a SYCL platform which contains the default device.
platform();
}; // class platform
_LIBSYCL_END_NAMESPACE_SYCL
#endif // _LIBSYCL___IMPL_PLATFORM_HPP

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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file is a SYCL 2020 standard header file.
///
//===----------------------------------------------------------------------===//
#ifndef _LIBSYCL_SYCL_HPP
#define _LIBSYCL_SYCL_HPP
#include <sycl/__impl/platform.hpp>
#endif // _LIBSYCL_SYCL_HPP

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libsycl/src/CMakeLists.txt Normal file
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@ -0,0 +1,98 @@
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../../runtimes/cmake/Modules")
include(WarningFlags)
function(add_sycl_rt_library LIB_TARGET_NAME LIB_OBJ_NAME LIB_OUTPUT_NAME)
if (NOT LLVM_ENABLE_PIC)
message( FATAL_ERROR "Position-Independent Code generation is required for libsycl shared library" )
endif()
cmake_parse_arguments(ARG "" "" "COMPILE_OPTIONS;SOURCES" ${ARGN})
add_library(${LIB_OBJ_NAME} OBJECT ${ARG_SOURCES})
# Common compilation step setup
target_compile_definitions(${LIB_OBJ_NAME} PRIVATE
$<$<STREQUAL:${CMAKE_SYSTEM_NAME},Windows>:_LIBSYCL_BUILDING_LIBRARY>)
cxx_add_warning_flags(${LIB_OBJ_NAME} ${LIBSYCL_ENABLE_WERROR} ${LIBSYCL_ENABLE_PEDANTIC})
target_include_directories(
${LIB_OBJ_NAME}
PRIVATE
${CMAKE_CURRENT_SOURCE_DIR}
${LIBSYCL_BUILD_INCLUDE_DIR}
)
add_library(${LIB_TARGET_NAME} SHARED
$<TARGET_OBJECTS:${LIB_OBJ_NAME}>)
add_dependencies(${LIB_OBJ_NAME}
sycl-headers
)
set_target_properties(${LIB_TARGET_NAME} PROPERTIES LINKER_LANGUAGE CXX)
if (CMAKE_SYSTEM_NAME STREQUAL Windows)
# Install stripped PDB
set(PDB_FILENAME "${LIB_TARGET_NAME}$<$<CONFIG:Debug>:d>")
check_linker_flag(CXX "LINKER:/PDBSTRIPPED:${PDB_FILENAME}.stripped.pdb"
LINKER_SUPPORTS_PDBSTRIPPED)
if(LINKER_SUPPORTS_PDBSTRIPPED)
target_link_options(${LIB_TARGET_NAME}
PRIVATE "LINKER:/PDBSTRIPPED:${PDB_FILENAME}.stripped.pdb")
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${PDB_FILENAME}.stripped.pdb"
DESTINATION ${CMAKE_INSTALL_PREFIX}/bin
RENAME "${PDB_FILENAME}.pdb"
COMPONENT ${LIB_TARGET_NAME}
OPTIONAL)
endif()
target_compile_options(${LIB_OBJ_NAME} PUBLIC /EHsc)
else()
target_compile_options(${LIB_OBJ_NAME} PUBLIC
-fvisibility=hidden -fvisibility-inlines-hidden)
if (UNIX AND NOT APPLE)
set(linker_script "${CMAKE_CURRENT_SOURCE_DIR}/ld-version-script.txt")
target_link_libraries(
${LIB_TARGET_NAME} PRIVATE "-Wl,--version-script=${linker_script}")
set_target_properties(${LIB_TARGET_NAME} PROPERTIES LINK_DEPENDS ${linker_script})
endif()
endif()
find_package(Threads REQUIRED)
target_link_libraries(${LIB_TARGET_NAME}
PRIVATE
${CMAKE_DL_LIBS}
${CMAKE_THREAD_LIBS_INIT}
)
set_target_properties(${LIB_TARGET_NAME} PROPERTIES
VERSION ${LIBSYCL_VERSION_STRING}
SOVERSION ${LIBSYCL_VERSION_STRING})
set_target_properties(${LIB_TARGET_NAME} PROPERTIES OUTPUT_NAME ${LIB_OUTPUT_NAME})
endfunction(add_sycl_rt_library)
set(LIBSYCL_SOURCES
"platform.cpp"
)
set(LIB_NAME "sycl")
set(LIB_OUTPUT_NAME "${LIB_NAME}")
if (CMAKE_SYSTEM_NAME STREQUAL Windows)
if (CMAKE_MSVC_RUNTIME_LIBRARY AND (NOT CMAKE_MSVC_RUNTIME_LIBRARY MATCHES "DLL$"))
message(FATAL_ERROR "libsycl requires a DLL version of the MSVC CRT.")
endif()
if ((NOT CMAKE_MSVC_RUNTIME_LIBRARY AND uppercase_CMAKE_BUILD_TYPE STREQUAL "DEBUG")
OR (CMAKE_MSVC_RUNTIME_LIBRARY STREQUAL "MultiThreadedDebugDLL"))
set(LIB_OUTPUT_NAME "${LIB_OUTPUT_NAME}d")
endif()
endif()
add_sycl_rt_library(${LIB_NAME} sycl_object ${LIB_OUTPUT_NAME}
SOURCES ${LIBSYCL_SOURCES})
install(TARGETS ${LIBSYCL_RT_LIBS}
ARCHIVE DESTINATION "lib${LLVM_LIBDIR_SUFFIX}" COMPONENT libsycl
LIBRARY DESTINATION "lib${LLVM_LIBDIR_SUFFIX}" COMPONENT libsycl
RUNTIME DESTINATION "bin" COMPONENT libsycl)

20
libsycl/src/ld-version-script.txt Normal file
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@ -0,0 +1,20 @@
{
/* Symbols to be exported are selected based on mangled names rather than */
/* the demangled names provided by the `extern "C++"` matcher because it is */
/* easy to express "export everything defined in the sycl namespace" using */
/* the former. Matching demangled names is more complicated in the presence */
/* of examples like: */
/* "vtable for sycl::foo" (should be exported) */
/* "vtable for std::__internal<sycl::foo>" (should not be exported) */
global:
/* Export everything from sycl namespace */
_ZNK4sycl*; /* function */
_ZN4sycl*; /* function */
_ZTIN4sycl*; /* typeinfo */
_ZTSN4sycl*; /* typeinfo name */
_ZTVN4sycl*; /* vtable */
local:
*;
};

17
libsycl/src/platform.cpp Normal file
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@ -0,0 +1,17 @@
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include <sycl/__impl/platform.hpp>
#include <stdexcept>
_LIBSYCL_BEGIN_NAMESPACE_SYCL
platform::platform() { throw std::runtime_error("Unimplemented"); }
_LIBSYCL_END_NAMESPACE_SYCL

16
libsycl/src/version.hpp.in Normal file
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@ -0,0 +1,16 @@
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file contains the declaration of SYCL RT version macro.
///
//===----------------------------------------------------------------------===//
#define _LIBSYCL_MAJOR_VERSION ${LIBSYCL_MAJOR_VERSION}
#define _LIBSYCL_MINOR_VERSION ${LIBSYCL_MINOR_VERSION}
#define _LIBSYCL_PATCH_VERSION ${LIBSYCL_PATCH_VERSION}
#define _LIBSYCL_ABI_NAMESPACE ${LIBSYCL_ABI_NAMESPACE}

2
llvm/CMakeLists.txt
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@ -149,7 +149,7 @@ endforeach()
# As we migrate runtimes to using the bootstrapping build, the set of default runtimes # As we migrate runtimes to using the bootstrapping build, the set of default runtimes
# should grow as we remove those runtimes from LLVM_ENABLE_PROJECTS above. # should grow as we remove those runtimes from LLVM_ENABLE_PROJECTS above.
set(LLVM_DEFAULT_RUNTIMES "libcxx;libcxxabi;libunwind") set(LLVM_DEFAULT_RUNTIMES "libcxx;libcxxabi;libunwind")
set(LLVM_SUPPORTED_RUNTIMES "libc;libunwind;libcxxabi;libcxx;compiler-rt;openmp;llvm-libgcc;offload;flang-rt;libclc") set(LLVM_SUPPORTED_RUNTIMES "libc;libunwind;libcxxabi;libcxx;compiler-rt;openmp;llvm-libgcc;offload;flang-rt;libclc;libsycl")
set(LLVM_ENABLE_RUNTIMES "" CACHE STRING set(LLVM_ENABLE_RUNTIMES "" CACHE STRING
"Semicolon-separated list of runtimes to build, or \"all\" (${LLVM_DEFAULT_RUNTIMES}). Supported runtimes are ${LLVM_SUPPORTED_RUNTIMES}.") "Semicolon-separated list of runtimes to build, or \"all\" (${LLVM_DEFAULT_RUNTIMES}). Supported runtimes are ${LLVM_SUPPORTED_RUNTIMES}.")
if(LLVM_ENABLE_RUNTIMES STREQUAL "all") if(LLVM_ENABLE_RUNTIMES STREQUAL "all")

2
runtimes/CMakeLists.txt
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@ -36,7 +36,7 @@ list(INSERT CMAKE_MODULE_PATH 0
# We order libraries to mirror roughly how they are layered, except that compiler-rt can depend # We order libraries to mirror roughly how they are layered, except that compiler-rt can depend
# on libc++, so we put it after. # on libc++, so we put it after.
set(LLVM_DEFAULT_RUNTIMES "libc;libunwind;libcxxabi;pstl;libcxx;compiler-rt;libclc;openmp;offload") set(LLVM_DEFAULT_RUNTIMES "libc;libunwind;libcxxabi;pstl;libcxx;compiler-rt;libclc;openmp;offload")
set(LLVM_SUPPORTED_RUNTIMES "${LLVM_DEFAULT_RUNTIMES};llvm-libgcc;flang-rt") set(LLVM_SUPPORTED_RUNTIMES "${LLVM_DEFAULT_RUNTIMES};llvm-libgcc;flang-rt;libsycl")
set(LLVM_ENABLE_RUNTIMES "" CACHE STRING set(LLVM_ENABLE_RUNTIMES "" CACHE STRING
"Semicolon-separated list of runtimes to build, or \"all\" (${LLVM_DEFAULT_RUNTIMES}). Supported runtimes are ${LLVM_SUPPORTED_RUNTIMES}.") "Semicolon-separated list of runtimes to build, or \"all\" (${LLVM_DEFAULT_RUNTIMES}). Supported runtimes are ${LLVM_SUPPORTED_RUNTIMES}.")
if(LLVM_ENABLE_RUNTIMES STREQUAL "all" ) if(LLVM_ENABLE_RUNTIMES STREQUAL "all" )