cmake: move a few bits to separate files

just because i feel CMakeLists.txt is getting too large

CMakeLists.txt

@@ -1,23 +1,6 @@
 cmake_minimum_required(VERSION 3.16)
 
-if(NOT DEFINED PREFER_BREW_LLVM)
-set(PREFER_BREW_LLVM ON)
-endif()
-if(NOT CMAKE_TOOLCHAIN_FILE AND PREFER_BREW_LLVM)
-# Prefer the homebrew version because xcode clang doesn't have detect_leaks
-# Note: CMAKE_SYSTEM_NAME is not available yet.
-set(BREW_LLVM_HOME /usr/local/opt/llvm@13)
-find_program(BREW_CLANG ${BREW_LLVM_HOME}/bin/clang)
-if(BREW_CLANG)
-set(CMAKE_C_COMPILER ${BREW_CLANG} CACHE FILEPATH "brew llvm clang" FORCE)
-find_program(BREW_AR ${BREW_LLVM_HOME}/bin/llvm-ar REQUIRED)
-set(CMAKE_AR ${BREW_AR} CACHE FILEPATH "brew llvm ar" FORCE)
-set(CMAKE_C_COMPILER_AR ${BREW_AR} CACHE FILEPATH "brew llvm ar" FORCE)
-find_program(BREW_RANLIB ${BREW_LLVM_HOME}/bin/llvm-ranlib REQUIRED)
-set(CMAKE_RANLIB ${BREW_RANLIB} CACHE FILEPATH "brew llvm ar" FORCE)
-set(CMAKE_C_COMPILER_RANLIB ${BREW_RANLIB} CACHE FILEPATH "brew llvm ranlib" FORCE)
-endif()
-endif()
+include(cmake/HomebrewLLVM.cmake)
 
 project(toywasm LANGUAGES C)
 
@@ -34,195 +17,7 @@ if(BUILD_TESTING)
 enable_testing()
 endif()
 
-if(NOT CMAKE_BUILD_TYPE)
-set(CMAKE_BUILD_TYPE "Release" CACHE STRING "default" FORCE)
-endif()
-
-option(TOYWASM_USE_SEPARATE_EXECUTE "Use separate execute callback" ON)
-option(TOYWASM_USE_TAILCALL "Use tailcall" ON)
-option(TOYWASM_USE_USER_SCHED "Use userland scheduler" OFF)
-option(TOYWASM_ENABLE_TRACING "Enable xlog_trace" OFF)
-option(TOYWASM_ENABLE_TRACING_INSN "Enable per-instruction xlog_trace" OFF)
-option(TOYWASM_USE_JUMP_BINARY_SEARCH "Enable binary search for jump tables" ON)
-option(TOYWASM_USE_JUMP_CACHE "Enable single-entry cache for jump tables" OFF)
-if(NOT TOYWASM_JUMP_CACHE2_SIZE)
-set(TOYWASM_JUMP_CACHE2_SIZE 4 CACHE STRING "The size of jump cache")
-endif()
-option(TOYWASM_USE_LOCALS_CACHE "Enable current_locals" ON)
-option(TOYWASM_USE_SEPARATE_LOCALS "Separate locals and stack" ON)
-option(TOYWASM_USE_SMALL_CELLS "Use smaller stack cells" ON)
-option(TOYWASM_USE_RESULTTYPE_CELLIDX "Index local lookup for resulttype" ON)
-option(TOYWASM_USE_LOCALTYPE_CELLIDX "Index local lookup for localtype" ON)
-option(TOYWASM_ENABLE_WRITER "Enable module writer" ON)
-option(TOYWASM_ENABLE_WASM_EXTENDED_CONST "Enable extended-const proposal" OFF)
-option(TOYWASM_ENABLE_WASM_MULTI_MEMORY "Enable multi-memory proposal" OFF)
-option(TOYWASM_ENABLE_WASM_TAILCALL "Enable WASM tail-call proposal" OFF)
-option(TOYWASM_ENABLE_WASM_THREADS "Enable WASM threads proposal" OFF)
-option(TOYWASM_ENABLE_WASI_THREADS "Enable wasi-threads proposal" OFF)
-
-if(NOT DEFINED USE_LSAN)
-set(USE_LSAN ON)
-endif()
-if (CMAKE_SYSTEM_NAME MATCHES "Darwin")
-if(NOT BREW_CLANG)
-set(USE_LSAN OFF)
-endif()
-list(APPEND TEST_ENV "LSAN_OPTIONS=suppressions=${CMAKE_CURRENT_SOURCE_DIR}/test/lsan.supp:print_suppressions=0")
-list(APPEND TEST_ENV "MallocNanoZone=0")
-endif()
-
-# clang-14: error: unsupported option '-fsanitize=leak' for target 'wasm32-unknown-wasi'
-# clang-14: error: unsupported option '-fsanitize=address' for target 'wasm32-unknown-wasi'
-if(CMAKE_C_COMPILER_TARGET MATCHES "wasm")
-set(USE_LSAN OFF)
-set(USE_ASAN OFF)
-endif()
-
-if (CMAKE_SYSTEM_NAME MATCHES "Linux")
-if (CMAKE_C_COMPILER_ID MATCHES "Clang")
-# lld doesn't seem to support s390
-# ld.lld: error: unknown emulation: elf64_s390
-# https://github.com/llvm/llvm-project/blob/93b7bdcda7072581ef3f5ceaae8c4f0d549a0845/lld/ELF/Driver.cpp#L142-L166
-if(NOT TRIPLET MATCHES "s390")
-set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=lld")
-else()
-set(USE_IPO OFF)
-endif()
-endif()
-endif()
-
-if(TOYWASM_USE_TAILCALL)
-if(CMAKE_C_COMPILER_TARGET MATCHES "wasm")
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mtail-call")
-endif()
-endif()
-
-if(NOT DEFINED USE_TSAN)
-set(USE_TSAN OFF)
-endif()
-# TOYWASM_ENABLE_WASM_THREADS might require pthread
-if(NOT TOYWASM_ENABLE_WASM_THREADS)
-set(TOYWASM_USE_USER_SCHED OFF)
-endif()
-if(TOYWASM_ENABLE_WASM_THREADS AND NOT TOYWASM_USE_USER_SCHED)
-# https://cmake.org/cmake/help/latest/module/FindThreads.html
-set(THREADS_PREFER_PTHREAD_FLAG TRUE)
-find_package(Threads)
-if (NOT THREADS_FOUND)
-message(WARNING "Enabling TOYWASM_USE_USER_SCHED because pthread was not found")
-set(TOYWASM_USE_USER_SCHED ON)
-else()
-if(CMAKE_C_COMPILER_TARGET MATCHES "wasm")
-# https://reviews.llvm.org/D130053
-# https://llvm.org/docs/LangRef.html#thread-local-storage-models
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -ftls-model=local-exec")
-set(WASM_MAX_MEMORY 67108864)
-set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--max-memory=${WASM_MAX_MEMORY}")
-set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--import-memory")
-# require LLVM >=16
-#set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--export-memory")
-endif()
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread")
-set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pthread")
-if(USE_TSAN)
-set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fsanitize=thread")
-endif()
-endif()
-endif()
-
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror")
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fshort-enums")
-if(CMAKE_C_COMPILER_ID STREQUAL GNU)
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unknown-pragmas")
-endif()
-
-set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fomit-frame-pointer")
-
-if (NOT CMAKE_BUILD_TYPE MATCHES "Debug")
-# Note: Release build disables assertions and thus yields a lot of
-# used variables. We are not interested in fixing them.
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unknown-warning-option -Wno-unused-but-set-variable -Wno-unused-variable -Wno-return-type")
-endif()
-
-if(CMAKE_C_COMPILER_ID MATCHES "Clang")
-# https://clang.llvm.org/docs/ThreadSafetyAnalysis.html
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wthread-safety")
-endif()
-
-if(NOT DEFINED USE_ASAN)
-set(USE_ASAN ON)
-endif()
-if(USE_ASAN)
-set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fsanitize=address")
-set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -fsanitize=address")
-endif()
-
-if(USE_LSAN)
-set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -fsanitize=leak")
-set(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG} -fsanitize=leak")
-set(ASAN_DETECT_LEAKS 1)
-else()
-set(ASAN_DETECT_LEAKS 0)
-endif()
-
-if(NOT DEFINED USE_IPO)
-check_ipo_supported(RESULT HAVE_IPO)
-if (NOT CMAKE_BUILD_TYPE MATCHES "Debug")
-if(HAVE_IPO)
-set(USE_IPO ON)
-else()
-set(USE_IPO OFF)
-endif()
-else()
-set(USE_IPO OFF)
-endif()
-endif()
-
-list(APPEND TEST_ENV "ASAN_OPTIONS=detect_leaks=${ASAN_DETECT_LEAKS}:detect_stack_use_after_return=1")
-list(APPEND TEST_ENV "UBSAN_OPTIONS=print_stacktrace=1")
-
-message(STATUS "CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}")
-message(STATUS "CMAKE_SYSTEM_NAME: ${CMAKE_SYSTEM_NAME}")
-message(STATUS "CMAKE_C_COMPILER: ${CMAKE_C_COMPILER}")
-message(STATUS "CMAKE_C_COMPILER_ID: ${CMAKE_C_COMPILER_ID}")
-message(STATUS "CMAKE_AR: ${CMAKE_AR}")
-message(STATUS "CMAKE_C_COMPILER_AR: ${CMAKE_C_COMPILER_AR}")
-message(STATUS "CMAKE_RANLIB: ${CMAKE_RANLIB}")
-message(STATUS "CMAKE_C_COMPILER_RANLIB: ${CMAKE_C_COMPILER_RANLIB}")
-message(STATUS "BUILD_TESTING: ${BUILD_TESTING}")
-message(STATUS "USE_IPO: ${USE_IPO}")
-message(STATUS "USE_ASAN: ${USE_ASAN}")
-message(STATUS "USE_LSAN: ${USE_LSAN}")
-message(STATUS "USE_TSAN: ${USE_TSAN}")
-
-find_package(Git REQUIRED)
-execute_process(
-	COMMAND ${GIT_EXECUTABLE} describe --tags --dirty --always --match "v*"
-	WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
-	OUTPUT_VARIABLE GIT_DESCRIBE_OUTPUT
-	RESULT_VARIABLE GIT_DESCRIBE_RESULT
-	OUTPUT_STRIP_TRAILING_WHITESPACE
-)
-# RESULT_VARIABLE can be an error string or exit status.
-# see https://cmake.org/cmake/help/latest/command/execute_process.html
-if((NOT GIT_DESCRIBE_RESULT) OR GIT_DESCRIBE_RESULT EQUAL 0)
-set(TOYWASM_VERSION ${GIT_DESCRIBE_OUTPUT})
-endif()
-if(DEFINED TOYWASM_VERSION)
-message(STATUS "toywasm version: ${TOYWASM_VERSION}")
-else()
-message(WARNING "failed to determine version. using \"unknown\".")
-set(TOYWASM_VERSION "unknown")
-endif()
-configure_file("${CMAKE_CURRENT_SOURCE_DIR}/lib/toywasm_version.h.in"
-	"${CMAKE_BINARY_DIR}/toywasm_version.h")
-
-configure_file("${CMAKE_CURRENT_SOURCE_DIR}/lib/toywasm_config.h.in"
-	"${CMAKE_BINARY_DIR}/toywasm_config.h")
-include_directories(${CMAKE_BINARY_DIR})
-
-configure_file("${CMAKE_CURRENT_SOURCE_DIR}/cli/toywasm_config.c.in"
-	"${CMAKE_BINARY_DIR}/toywasm_config.c")
+include(cmake/ToywasmConfig.cmake)
 
 # lib
 

cmake/HomebrewLLVM.cmake

@@ -0,0 +1,18 @@
+if(NOT DEFINED PREFER_BREW_LLVM)
+set(PREFER_BREW_LLVM ON)
+endif()
+if(NOT CMAKE_TOOLCHAIN_FILE AND PREFER_BREW_LLVM)
+# Prefer the homebrew version because xcode clang doesn't have detect_leaks
+# Note: CMAKE_SYSTEM_NAME is not available yet.
+set(BREW_LLVM_HOME /usr/local/opt/llvm@13)
+find_program(BREW_CLANG ${BREW_LLVM_HOME}/bin/clang)
+if(BREW_CLANG)
+set(CMAKE_C_COMPILER ${BREW_CLANG} CACHE FILEPATH "brew llvm clang" FORCE)
+find_program(BREW_AR ${BREW_LLVM_HOME}/bin/llvm-ar REQUIRED)
+set(CMAKE_AR ${BREW_AR} CACHE FILEPATH "brew llvm ar" FORCE)
+set(CMAKE_C_COMPILER_AR ${BREW_AR} CACHE FILEPATH "brew llvm ar" FORCE)
+find_program(BREW_RANLIB ${BREW_LLVM_HOME}/bin/llvm-ranlib REQUIRED)
+set(CMAKE_RANLIB ${BREW_RANLIB} CACHE FILEPATH "brew llvm ar" FORCE)
+set(CMAKE_C_COMPILER_RANLIB ${BREW_RANLIB} CACHE FILEPATH "brew llvm ranlib" FORCE)
+endif()
+endif()