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CMakeLists.txt
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CMakeLists.txt
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# This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
if(EXT_PLATFORM_STRING)
include(EXTLuau.cmake)
return()
endif()
cmake_minimum_required(VERSION 3.0)
option(LUAU_BUILD_CLI "Build CLI" ON)
option(LUAU_BUILD_TESTS "Build tests" ON)
option(LUAU_BUILD_WEB "Build Web module" OFF)
option(LUAU_WERROR "Warnings as errors" OFF)
option(LUAU_STATIC_CRT "Link with the static CRT (/MT)" OFF)
option(LUAU_EXTERN_C "Use extern C for all APIs" OFF)
option(LUAU_NATIVE "Enable support for native code generation" OFF)
cmake_policy(SET CMP0054 NEW)
cmake_policy(SET CMP0091 NEW)
if(LUAU_STATIC_CRT)
cmake_minimum_required(VERSION 3.15)
set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreaded$<$<CONFIG:Debug>:Debug>")
endif()
project(Luau LANGUAGES CXX C)
add_library(Luau.Common INTERFACE)
add_library(Luau.Ast STATIC)
add_library(Luau.Compiler STATIC)
add_library(Luau.Analysis STATIC)
add_library(Luau.CodeGen STATIC)
add_library(Luau.VM STATIC)
add_library(isocline STATIC)
if(LUAU_BUILD_CLI)
add_executable(Luau.Repl.CLI)
add_executable(Luau.Analyze.CLI)
add_executable(Luau.Ast.CLI)
add_executable(Luau.Reduce.CLI)
# This also adds target `name` on Linux/macOS and `name.exe` on Windows
set_target_properties(Luau.Repl.CLI PROPERTIES OUTPUT_NAME luau)
set_target_properties(Luau.Analyze.CLI PROPERTIES OUTPUT_NAME luau-analyze)
set_target_properties(Luau.Ast.CLI PROPERTIES OUTPUT_NAME luau-ast)
set_target_properties(Luau.Reduce.CLI PROPERTIES OUTPUT_NAME luau-reduce)
endif()
if(LUAU_BUILD_TESTS)
add_executable(Luau.UnitTest)
add_executable(Luau.Conformance)
add_executable(Luau.CLI.Test)
endif()
if(LUAU_BUILD_WEB)
add_executable(Luau.Web)
endif()
# Proxy target to make it possible to depend on private VM headers
add_library(Luau.VM.Internals INTERFACE)
include(Sources.cmake)
target_include_directories(Luau.Common INTERFACE Common/include)
target_compile_features(Luau.Ast PUBLIC cxx_std_17)
target_include_directories(Luau.Ast PUBLIC Ast/include)
target_link_libraries(Luau.Ast PUBLIC Luau.Common)
target_compile_features(Luau.Compiler PUBLIC cxx_std_17)
target_include_directories(Luau.Compiler PUBLIC Compiler/include)
target_link_libraries(Luau.Compiler PUBLIC Luau.Ast)
target_compile_features(Luau.Analysis PUBLIC cxx_std_17)
target_include_directories(Luau.Analysis PUBLIC Analysis/include)
target_link_libraries(Luau.Analysis PUBLIC Luau.Ast)
target_compile_features(Luau.CodeGen PRIVATE cxx_std_17)
target_include_directories(Luau.CodeGen PUBLIC CodeGen/include)
target_link_libraries(Luau.CodeGen PRIVATE Luau.VM Luau.VM.Internals) # Code generation needs VM internals
target_link_libraries(Luau.CodeGen PUBLIC Luau.Common)
target_compile_features(Luau.VM PRIVATE cxx_std_11)
target_include_directories(Luau.VM PUBLIC VM/include)
target_link_libraries(Luau.VM PUBLIC Luau.Common)
target_include_directories(isocline PUBLIC extern/isocline/include)
target_include_directories(Luau.VM.Internals INTERFACE VM/src)
set(LUAU_OPTIONS)
if(MSVC)
list(APPEND LUAU_OPTIONS /D_CRT_SECURE_NO_WARNINGS) # We need to use the portable CRT functions.
list(APPEND LUAU_OPTIONS "/we4018") # Signed/unsigned mismatch
list(APPEND LUAU_OPTIONS "/we4388") # Also signed/unsigned mismatch
else()
list(APPEND LUAU_OPTIONS -Wall) # All warnings
list(APPEND LUAU_OPTIONS -Wsign-compare) # This looks to be included in -Wall for GCC but not clang
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
list(APPEND LUAU_OPTIONS /MP) # Distribute single project compilation across multiple cores
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# Some gcc versions treat var in `if (type var = val)` as unused
# Some gcc versions treat variables used in constexpr if blocks as unused
list(APPEND LUAU_OPTIONS -Wno-unused)
endif()
# Enabled in CI; we should be warning free on our main compiler versions but don't guarantee being warning free everywhere
if(LUAU_WERROR)
if(MSVC)
list(APPEND LUAU_OPTIONS /WX) # Warnings are errors
else()
list(APPEND LUAU_OPTIONS -Werror) # Warnings are errors
endif()
endif()
if(LUAU_BUILD_WEB)
# add -fexceptions for emscripten to allow exceptions to be caught in C++
list(APPEND LUAU_OPTIONS -fexceptions)
endif()
set(ISOCLINE_OPTIONS)
if (NOT CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
list(APPEND ISOCLINE_OPTIONS -Wno-unused-function)
endif()
target_compile_options(Luau.Ast PRIVATE ${LUAU_OPTIONS})
target_compile_options(Luau.Analysis PRIVATE ${LUAU_OPTIONS})
target_compile_options(Luau.CodeGen PRIVATE ${LUAU_OPTIONS})
target_compile_options(Luau.VM PRIVATE ${LUAU_OPTIONS})
target_compile_options(isocline PRIVATE ${LUAU_OPTIONS} ${ISOCLINE_OPTIONS})
if(LUAU_EXTERN_C)
# enable extern "C" for VM (lua.h, lualib.h) and Compiler (luacode.h) to make Luau friendlier to use from non-C++ languages
# note that we enable LUA_USE_LONGJMP=1 as well; otherwise functions like luaL_error will throw C++ exceptions, which can't be done from extern "C" functions
target_compile_definitions(Luau.VM PUBLIC LUA_USE_LONGJMP=1)
target_compile_definitions(Luau.VM PUBLIC LUA_API=extern\"C\")
target_compile_definitions(Luau.Compiler PUBLIC LUACODE_API=extern\"C\")
endif()
if(LUAU_NATIVE)
target_compile_definitions(Luau.VM PUBLIC LUA_CUSTOM_EXECUTION=1)
endif()
if (CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" AND MSVC_VERSION GREATER_EQUAL 1924)
# disable partial redundancy elimination which regresses interpreter codegen substantially in VS2022:
# https://developercommunity.visualstudio.com/t/performance-regression-on-a-complex-interpreter-lo/1631863
set_source_files_properties(VM/src/lvmexecute.cpp PROPERTIES COMPILE_FLAGS /d2ssa-pre-)
endif()
if (NOT MSVC)
# disable support for math_errno which allows compilers to lower sqrt() into a single CPU instruction
target_compile_options(Luau.VM PRIVATE -fno-math-errno)
endif()
if(MSVC AND LUAU_BUILD_CLI)
# the default stack size that MSVC linker uses is 1 MB; we need more stack space in Debug because stack frames are larger
set_target_properties(Luau.Analyze.CLI PROPERTIES LINK_FLAGS_DEBUG /STACK:2097152)
set_target_properties(Luau.Repl.CLI PROPERTIES LINK_FLAGS_DEBUG /STACK:2097152)
endif()
# embed .natvis inside the library debug information
if(MSVC)
target_link_options(Luau.Ast INTERFACE /NATVIS:${CMAKE_CURRENT_SOURCE_DIR}/tools/natvis/Ast.natvis)
target_link_options(Luau.Analysis INTERFACE /NATVIS:${CMAKE_CURRENT_SOURCE_DIR}/tools/natvis/Analysis.natvis)
target_link_options(Luau.CodeGen INTERFACE /NATVIS:${CMAKE_CURRENT_SOURCE_DIR}/tools/natvis/CodeGen.natvis)
target_link_options(Luau.VM INTERFACE /NATVIS:${CMAKE_CURRENT_SOURCE_DIR}/tools/natvis/VM.natvis)
endif()
# make .natvis visible inside the solution
if(MSVC_IDE)
target_sources(Luau.Ast PRIVATE tools/natvis/Ast.natvis)
target_sources(Luau.Analysis PRIVATE tools/natvis/Analysis.natvis)
target_sources(Luau.CodeGen PRIVATE tools/natvis/CodeGen.natvis)
target_sources(Luau.VM PRIVATE tools/natvis/VM.natvis)
endif()
if(LUAU_BUILD_CLI)
target_compile_options(Luau.Repl.CLI PRIVATE ${LUAU_OPTIONS})
target_compile_options(Luau.Reduce.CLI PRIVATE ${LUAU_OPTIONS})
target_compile_options(Luau.Analyze.CLI PRIVATE ${LUAU_OPTIONS})
target_compile_options(Luau.Ast.CLI PRIVATE ${LUAU_OPTIONS})
target_include_directories(Luau.Repl.CLI PRIVATE extern extern/isocline/include)
target_link_libraries(Luau.Repl.CLI PRIVATE Luau.Compiler Luau.CodeGen Luau.VM isocline)
if(UNIX)
find_library(LIBPTHREAD pthread)
if (LIBPTHREAD)
target_link_libraries(Luau.Repl.CLI PRIVATE pthread)
endif()
endif()
target_link_libraries(Luau.Analyze.CLI PRIVATE Luau.Analysis)
target_link_libraries(Luau.Ast.CLI PRIVATE Luau.Ast Luau.Analysis)
target_compile_features(Luau.Reduce.CLI PRIVATE cxx_std_17)
target_include_directories(Luau.Reduce.CLI PUBLIC Reduce/include)
target_link_libraries(Luau.Reduce.CLI PRIVATE Luau.Common Luau.Ast Luau.Analysis)
endif()
if(LUAU_BUILD_TESTS)
target_compile_options(Luau.UnitTest PRIVATE ${LUAU_OPTIONS})
target_compile_definitions(Luau.UnitTest PRIVATE DOCTEST_CONFIG_DOUBLE_STRINGIFY)
target_include_directories(Luau.UnitTest PRIVATE extern)
target_link_libraries(Luau.UnitTest PRIVATE Luau.Analysis Luau.Compiler Luau.CodeGen)
target_compile_options(Luau.Conformance PRIVATE ${LUAU_OPTIONS})
target_include_directories(Luau.Conformance PRIVATE extern)
target_link_libraries(Luau.Conformance PRIVATE Luau.Analysis Luau.Compiler Luau.CodeGen Luau.VM)
target_compile_options(Luau.CLI.Test PRIVATE ${LUAU_OPTIONS})
target_include_directories(Luau.CLI.Test PRIVATE extern CLI)
target_link_libraries(Luau.CLI.Test PRIVATE Luau.Compiler Luau.CodeGen Luau.VM isocline)
if(UNIX)
find_library(LIBPTHREAD pthread)
if (LIBPTHREAD)
target_link_libraries(Luau.CLI.Test PRIVATE pthread)
endif()
endif()
endif()
if(LUAU_BUILD_WEB)
target_compile_options(Luau.Web PRIVATE ${LUAU_OPTIONS})
target_link_libraries(Luau.Web PRIVATE Luau.Compiler Luau.VM)
# declare exported functions to emscripten
target_link_options(Luau.Web PRIVATE -sEXPORTED_FUNCTIONS=['_executeScript'] -sEXPORTED_RUNTIME_METHODS=['ccall','cwrap'])
# add -fexceptions for emscripten to allow exceptions to be caught in C++
target_link_options(Luau.Web PRIVATE -fexceptions)
# the output is a single .js file with an embedded wasm blob
target_link_options(Luau.Web PRIVATE -sSINGLE_FILE=1)
endif()