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include(CheckCXXSourceCompiles)
set(CLANG_EXPECTED_VERSION 11.0.0)
if(CMAKE_CXX_COMPILER_ID MATCHES "AppleClang")
# apple doesnt like to do the sane thing which would be to use the same version numbering as regular clang
# version number pulled from https://en.wikipedia.org/wiki/Xcode#Toolchain_versions for row matching LLVM 11
set(CLANG_EXPECTED_VERSION 12.0.5)
endif()
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS CLANG_EXPECTED_VERSION)
message(FATAL_ERROR "Clang: TrinityCore requires version ${CLANG_EXPECTED_VERSION} to build but found ${CMAKE_CXX_COMPILER_VERSION}")
else()
message(STATUS "Clang: Minimum version required is ${CLANG_EXPECTED_VERSION}, found ${CMAKE_CXX_COMPILER_VERSION} - ok!")
endif()
# This tests for a bug in clang-7 that causes linkage to fail for 64-bit from_chars (in some configurations)
# If the clang requirement is bumped to >= clang-8, you can remove this check, as well as
# the associated ifdef block in src/common/Utilities/StringConvert.h
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("
#include <charconv>
#include <cstdint>
int main()
{
uint64_t n;
char const c[] = \"0\";
std::from_chars(c, c+1, n);
return static_cast<int>(n);
}
" CLANG_HAVE_PROPER_CHARCONV)
if (NOT CLANG_HAVE_PROPER_CHARCONV)
message(STATUS "Clang: Detected from_chars bug for 64-bit integers, workaround enabled")
target_compile_definitions(trinity-compile-option-interface
INTERFACE
TRINITY_NEED_CHARCONV_WORKAROUND)
endif()
if(WITH_WARNINGS)
target_compile_options(trinity-warning-interface
INTERFACE
-W
-Wall
-Wextra
-Wimplicit-fallthrough
-Winit-self
-Wfatal-errors
-Wno-mismatched-tags
-Woverloaded-virtual
-Wno-missing-field-initializers) # this warning is useless when combined with structure members that have default initializers
message(STATUS "Clang: All warnings enabled")
endif()
if(WITH_COREDEBUG)
target_compile_options(trinity-compile-option-interface
INTERFACE
-g3)
message(STATUS "Clang: Debug-flags set (-g3)")
endif()
if(ASAN)
target_compile_options(trinity-compile-option-interface
INTERFACE
-fno-omit-frame-pointer
-fsanitize=address
-fsanitize-recover=address
-fsanitize-address-use-after-scope)
target_link_options(trinity-compile-option-interface
INTERFACE
-fno-omit-frame-pointer
-fsanitize=address
-fsanitize-recover=address
-fsanitize-address-use-after-scope)
message(STATUS "Clang: Enabled Address Sanitizer ASan")
endif()
if(MSAN)
target_compile_options(trinity-compile-option-interface
INTERFACE
-fno-omit-frame-pointer
-fsanitize=memory
-fsanitize-memory-track-origins
-mllvm
-msan-keep-going=1)
target_link_options(trinity-compile-option-interface
INTERFACE
-fno-omit-frame-pointer
-fsanitize=memory
-fsanitize-memory-track-origins)
message(STATUS "Clang: Enabled Memory Sanitizer MSan")
endif()
if(UBSAN)
target_compile_options(trinity-compile-option-interface
INTERFACE
-fno-omit-frame-pointer
-fsanitize=undefined)
target_link_options(trinity-compile-option-interface
INTERFACE
-fno-omit-frame-pointer
-fsanitize=undefined)
message(STATUS "Clang: Enabled Undefined Behavior Sanitizer UBSan")
endif()
if(TSAN)
target_compile_options(trinity-compile-option-interface
INTERFACE
-fno-omit-frame-pointer
-fsanitize=thread)
target_link_options(trinity-compile-option-interface
INTERFACE
-fno-omit-frame-pointer
-fsanitize=thread)
message(STATUS "Clang: Enabled Thread Sanitizer TSan")
endif()
if(BUILD_TIME_ANALYSIS)
target_compile_options(trinity-compile-option-interface
INTERFACE
-ftime-trace)
message(STATUS "Clang: Enabled build time analysis (-ftime-trace)")
endif()
# -Wno-narrowing needed to suppress a warning in g3d
# -Wno-deprecated-register is needed to suppress 185 gsoap warnings on Unix systems.
# -Wno-undefined-inline needed for a compile time optimization hack with fmt
target_compile_options(trinity-compile-option-interface
INTERFACE
-Wno-narrowing
-Wno-deprecated-register
-Wno-undefined-inline)
if(BUILD_SHARED_LIBS)
# -fPIC is needed to allow static linking in shared libs.
# -fvisibility=hidden sets the default visibility to hidden to prevent exporting of all symbols.
target_compile_options(trinity-compile-option-interface
INTERFACE
-fPIC)
target_compile_options(trinity-hidden-symbols-interface
INTERFACE
-fvisibility=hidden)
# --no-undefined to throw errors when there are undefined symbols
# (caused through missing TRINITY_*_API macros).
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --no-undefined")
message(STATUS "Clang: Disallow undefined symbols")
endif()
# speedup PCH builds by forcing template instantiations during PCH generation
set(CMAKE_REQUIRED_FLAGS "-fpch-instantiate-templates")
check_cxx_source_compiles("int main() { return 0; }" CLANG_HAS_PCH_INSTANTIATE_TEMPLATES)
unset(CMAKE_REQUIRED_FLAGS)
if(CLANG_HAS_PCH_INSTANTIATE_TEMPLATES)
target_compile_options(trinity-compile-option-interface
INTERFACE
-fpch-instantiate-templates)
endif()
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