ladybird/Meta/CMake/common_compile_options.cmake
Andrew Kaster 77e890b15e Meta+Documentation+Ports: Move from C++20 to C++23
Now that oss-fuzz is on a clang commit > the 17.x release candidates,
we can start looking at some shiny new features to enable.
2024-05-06 11:46:28 -06:00

49 lines
1.8 KiB
CMake

# Flags shared by Lagom (including Ladybird) and Serenity.
set(CMAKE_CXX_STANDARD 23)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_COLOR_DIAGNOSTICS ON)
add_compile_options(-Wall)
add_compile_options(-Wextra)
add_compile_options(-Wno-invalid-offsetof)
add_compile_options(-Wno-unknown-warning-option)
add_compile_options(-Wno-unused-command-line-argument)
add_compile_options(-fno-exceptions)
add_compile_options(-ffp-contract=off)
if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "18")
add_compile_options(-Wpadded-bitfield)
endif()
if (NOT CMAKE_HOST_SYSTEM_NAME MATCHES SerenityOS)
# FIXME: Something makes this go crazy and flag unused variables that aren't flagged as such when building with the toolchain.
# Disable -Werror for now.
add_compile_options(-Werror)
endif()
if (CMAKE_CXX_COMPILER_ID MATCHES "Clang$")
# Clang's default constexpr-steps limit is 1048576(2^20), GCC doesn't have one
add_compile_options(-fconstexpr-steps=16777216)
add_compile_options(-Wno-implicit-const-int-float-conversion)
add_compile_options(-Wno-user-defined-literals)
add_compile_options(-Wno-vla-cxx-extension)
elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
# Only ignore expansion-to-defined for g++, clang's implementation doesn't complain about function-like macros
add_compile_options(-Wno-expansion-to-defined)
add_compile_options(-Wno-literal-suffix)
# FIXME: This warning seems useful but has too many false positives with GCC 13.
add_compile_options(-Wno-dangling-reference)
endif()
if (UNIX AND NOT APPLE AND NOT ENABLE_FUZZERS)
add_compile_options(-fno-semantic-interposition)
add_compile_options(-fvisibility-inlines-hidden)
endif()