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# Copyright (c) Microsoft Corporation.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
cmake_minimum_required(VERSION 4.3.1)
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
project(msvc_standard_libraries LANGUAGES CXX)
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "19.52.36405.1")
    message(FATAL_ERROR "The STL must be built with MSVC Compiler 19.52.36405.1 or later. Follow the README instructions.")
include(CheckCXXSourceCompiles)
check_cxx_source_compiles([=[
#include <sdkddkver.h>
static_assert(WDK_NTDDI_VERSION >= NTDDI_WIN11_BR, "Inspecting WDK_NTDDI_VERSION, the Windows SDK version.");
int main() {}
]=] WINDOWS_SDK_VERSION_CHECK)
if(NOT WINDOWS_SDK_VERSION_CHECK)
    message(FATAL_ERROR "The STL must be built with the Windows 11 SDK (10.0.28000) or later. Follow the README instructions.")
if(NOT DEFINED VCLIBS_TARGET_ARCHITECTURE)
    set(VCLIBS_TARGET_ARCHITECTURE "${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}")
string(TOLOWER "${VCLIBS_TARGET_ARCHITECTURE}" VCLIBS_TARGET_ARCHITECTURE)
if(VCLIBS_TARGET_ARCHITECTURE MATCHES "^(x86|x64)$")
    enable_language(ASM_MASM)
# add the tools subdirectory _before_ we change all the flags
add_subdirectory(tools EXCLUDE_FROM_ALL)
# these allow the targets to show up in the top-level
# (as opposed to under the tools subdirectory)
if(TARGET run-format)
    add_custom_target(format)
    add_dependencies(format run-format)
if(TARGET run-validate)
    add_custom_target(validate)
    add_dependencies(validate run-validate)
option(CONFIGURE_TESTING "Enable testing" ON)
set(VCLIBS_SUFFIX "_oss" CACHE STRING "suffix for built DLL names to avoid conflicts with distributed DLLs")
option(STL_USE_ANALYZE "Pass the /analyze flag to MSVC" OFF)
option(STL_ASAN_BUILD "Build the STL with ASan enabled" OFF)
set(VCLIBS_EXPLICIT_MACHINE "")
if(VCLIBS_TARGET_ARCHITECTURE STREQUAL "x86")
    set(VCLIBS_TARGET_ARCHITECTURE "x86")
    set(VCLIBS_I386_OR_AMD64 "i386")
    set(VCLIBS_X86_OR_X64 "x86")
elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "x64")
    set(VCLIBS_TARGET_ARCHITECTURE "x64")
    set(VCLIBS_I386_OR_AMD64 "amd64")
    set(VCLIBS_X86_OR_X64 "x64")
elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "arm64")
    set(VCLIBS_TARGET_ARCHITECTURE "arm64")
    set(VCLIBS_I386_OR_AMD64 "arm64")
    set(VCLIBS_X86_OR_X64 "arm64")
elseif(VCLIBS_TARGET_ARCHITECTURE STREQUAL "arm64ec")
    set(VCLIBS_TARGET_ARCHITECTURE "arm64ec")
    set(VCLIBS_I386_OR_AMD64 "arm64ec")
    set(VCLIBS_X86_OR_X64 "arm64") # Yes, really: `%VCToolsInstallDir%lib\arm64ec` only contains the Link Options
    add_compile_options($<$<COMPILE_LANGUAGE:CXX>:/arm64EC>)
    set(VCLIBS_EXPLICIT_MACHINE "/machine:arm64ec")
    message(FATAL_ERROR "Could not determine target architecture: VCLIBS_TARGET_ARCHITECTURE: ${VCLIBS_TARGET_ARCHITECTURE}")
get_filename_component(TOOLSET_BINARIES_DIR "${CMAKE_CXX_COMPILER}" DIRECTORY) # Example: $\VC\Tools\MSVC\14.23.27931\bin\Hostx86\x86
get_filename_component(TOOLSET_ROOT_DIR "${TOOLSET_BINARIES_DIR}" DIRECTORY) # $\VC\Tools\MSVC\14.23.27931\bin\Hostx86
get_filename_component(TOOLSET_ROOT_DIR "${TOOLSET_ROOT_DIR}" DIRECTORY) # $\VC\Tools\MSVC\14.23.27931\bin
get_filename_component(TOOLSET_ROOT_DIR "${TOOLSET_ROOT_DIR}" DIRECTORY) # $\VC\Tools\MSVC\14.23.27931
set(TOOLSET_LIB "${TOOLSET_ROOT_DIR}/lib/${VCLIBS_X86_OR_X64}")
set(STL_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/out/lib/${VCLIBS_I386_OR_AMD64}")
set(STL_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/out/lib/${VCLIBS_I386_OR_AMD64}")
set(STL_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/out/bin/${VCLIBS_I386_OR_AMD64}")
# Note that we set _WIN32_WINNT to a high level to make declarations available.
add_compile_definitions(
    _ALLOW_ITERATOR_DEBUG_LEVEL_MISMATCH WIN32_LEAN_AND_MEAN STRICT _CRT_STDIO_ARBITRARY_WIDE_SPECIFIERS
    _WIN32_WINNT=0x0A00 NTDDI_VERSION=NTDDI_WIN11_BR)
if(STL_USE_ANALYZE)
    # TRANSITION, Windows SDK 10.0.28000 emits multiple warnings:
    # "warning C6553: The annotation for function 'LCMapStringEx' on _Param_(9) does not apply to a value type."
    # Reported as OS-40109504 "Windows SDK: incorrect SAL annotations on functions the STL uses".
    # "warning C28285: For function '_BitScanForward' '_Param_(1)' syntax error in 'SAL_range(0,(sizeof(Mask)*8)-1)' near 'Mask)*8'."
    # Reported as VSO-2946529 "/analyze emits warning C28285 for _BitScanForward declared by winnt.h".
    # Fixed by OS-PR-14602802 on 2026-01-22.
    add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:/analyze:autolog-;/wd6553;/wd28285>")
    if(VCLIBS_TARGET_ARCHITECTURE STREQUAL "arm64ec")
        # TRANSITION, Windows SDK 10.0.28000 emits
        # "warning C28301: No annotations for first declaration of 'meow'"
        # for various intrinsics when building for ARM64EC.
        add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:/wd28301>")
    endif()
set(VCLIBS_DEBUG_OPTIONS "$<$<COMPILE_LANGUAGE:CXX>:/Od>")
set(VCLIBS_RELEASE_OPTIONS "$<$<COMPILE_LANGUAGE:CXX>:/O2>")
if(CONFIGURE_TESTING)
    add_subdirectory(tests)
if(STL_ASAN_BUILD)
    message(STATUS "Building with ASan enabled")
    add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:-fsanitize=address;-fno-sanitize-address-vcasan-lib>")
add_subdirectory(boost-math)
add_subdirectory(stl)
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