mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
18c641f2b8
As proposed here: https://lists.llvm.org/pipermail/llvm-dev/2019-June/133147.html This patch raises the minimum supported version to build LLVM/Clang to Visual Studio 2017. Differential Revision: https://reviews.llvm.org/D64326 llvm-svn: 365452
112 lines
4.9 KiB
CMake
112 lines
4.9 KiB
CMake
# Check if the host compiler is new enough.
|
|
# These versions are updated based on the following policy:
|
|
# llvm.org/docs/DeveloperPolicy.html#toolchain
|
|
|
|
include(CheckCXXSourceCompiles)
|
|
|
|
set(GCC_MIN 4.8)
|
|
set(GCC_SOFT_ERROR 5.1)
|
|
set(CLANG_MIN 3.1)
|
|
set(CLANG_SOFT_ERROR 3.5)
|
|
set(APPLECLANG_MIN 3.1)
|
|
set(APPLECLANG_SOFT_ERROR 6.0)
|
|
|
|
# https://en.wikipedia.org/wiki/Microsoft_Visual_C#Internal_version_numbering
|
|
# _MSC_VER == 1910 MSVC++ 14.1 (Visual Studio 2017 version 15.0)
|
|
set(MSVC_MIN 19.1)
|
|
set(MSVC_SOFT_ERROR 19.1)
|
|
|
|
# Map the above GCC versions to dates: https://gcc.gnu.org/develop.html#timeline
|
|
set(GCC_MIN_DATE 20130322)
|
|
set(GCC_SOFT_ERROR_DATE 20150422)
|
|
|
|
|
|
if(DEFINED LLVM_COMPILER_CHECKED)
|
|
return()
|
|
endif()
|
|
set(LLVM_COMPILER_CHECKED ON)
|
|
|
|
if(LLVM_FORCE_USE_OLD_TOOLCHAIN)
|
|
return()
|
|
endif()
|
|
|
|
function(check_compiler_version NAME NICE_NAME MINIMUM_VERSION SOFT_ERROR_VERSION)
|
|
if(NOT CMAKE_CXX_COMPILER_ID STREQUAL NAME)
|
|
return()
|
|
endif()
|
|
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS MINIMUM_VERSION)
|
|
message(FATAL_ERROR "Host ${NICE_NAME} version must be at least ${MINIMUM_VERSION}, your version is ${CMAKE_CXX_COMPILER_VERSION}.")
|
|
elseif(CMAKE_CXX_COMPILER_VERSION VERSION_LESS SOFT_ERROR_VERSION)
|
|
if(LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN)
|
|
message(WARNING "Host ${NICE_NAME} version should be at least ${SOFT_ERROR_VERSION} because LLVM will soon use new C++ features which your toolchain version doesn't support. Your version is ${CMAKE_CXX_COMPILER_VERSION}. Ignoring because you've set LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN, but very soon your toolchain won't be supported.")
|
|
else()
|
|
message(FATAL_ERROR "Host ${NICE_NAME} version should be at least ${SOFT_ERROR_VERSION} because LLVM will soon use new C++ features which your toolchain version doesn't support. Your version is ${CMAKE_CXX_COMPILER_VERSION}. You can temporarily opt out using LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN, but very soon your toolchain won't be supported.")
|
|
endif()
|
|
endif()
|
|
endfunction(check_compiler_version)
|
|
|
|
check_compiler_version("GNU" "GCC" ${GCC_MIN} ${GCC_SOFT_ERROR})
|
|
check_compiler_version("Clang" "Clang" ${CLANG_MIN} ${CLANG_SOFT_ERROR})
|
|
check_compiler_version("AppleClang" "Apple Clang" ${APPLECLANG_MIN} ${APPLECLANG_SOFT_ERROR})
|
|
check_compiler_version("MSVC" "Visual Studio" ${MSVC_MIN} ${MSVC_SOFT_ERROR})
|
|
|
|
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
|
|
if (CMAKE_CXX_SIMULATE_ID MATCHES "MSVC")
|
|
if (CMAKE_CXX_SIMULATE_VERSION VERSION_LESS MSVC_MIN)
|
|
message(FATAL_ERROR "Host Clang must have at least -fms-compatibility-version=${MSVC_MIN}, your version is ${CMAKE_CXX_SIMULATE_VERSION}.")
|
|
endif()
|
|
set(CLANG_CL 1)
|
|
elseif(NOT LLVM_ENABLE_LIBCXX)
|
|
# Test that we aren't using too old of a version of libstdc++.
|
|
set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
|
|
set(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
|
|
set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -std=c++0x")
|
|
# Test for libstdc++ version of at least 4.8 by checking for _ZNKSt17bad_function_call4whatEv.
|
|
# Note: We should check _GLIBCXX_RELEASE when possible (i.e., for GCC 7.1 and up).
|
|
check_cxx_source_compiles("
|
|
#include <iosfwd>
|
|
#if defined(__GLIBCXX__)
|
|
#if __GLIBCXX__ < ${GCC_MIN_DATE}
|
|
#error Unsupported libstdc++ version
|
|
#endif
|
|
#endif
|
|
#if defined(__GLIBCXX__)
|
|
extern const char _ZNKSt17bad_function_call4whatEv[];
|
|
const char *chk = _ZNKSt17bad_function_call4whatEv;
|
|
#else
|
|
const char *chk = \"\";
|
|
#endif
|
|
int main() { ++chk; return 0; }
|
|
"
|
|
LLVM_LIBSTDCXX_MIN)
|
|
if(NOT LLVM_LIBSTDCXX_MIN)
|
|
message(FATAL_ERROR "libstdc++ version must be at least ${GCC_MIN}.")
|
|
endif()
|
|
# Test for libstdc++ version of at least 5.1 by checking for std::iostream_category().
|
|
# Note: We should check _GLIBCXX_RELEASE when possible (i.e., for GCC 7.1 and up).
|
|
check_cxx_source_compiles("
|
|
#include <iosfwd>
|
|
#if defined(__GLIBCXX__)
|
|
#if __GLIBCXX__ < ${GCC_SOFT_ERROR_DATE}
|
|
#error Unsupported libstdc++ version
|
|
#endif
|
|
#endif
|
|
#if defined(__GLIBCXX__)
|
|
#include <ios>
|
|
void foo(void) { (void) std::iostream_category(); }
|
|
#endif
|
|
int main() { return 0; }
|
|
"
|
|
LLVM_LIBSTDCXX_SOFT_ERROR)
|
|
if(NOT LLVM_LIBSTDCXX_SOFT_ERROR)
|
|
if(LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN)
|
|
message(WARNING "libstdc++ version should be at least ${GCC_SOFT_ERROR} because LLVM will soon use new C++ features which your toolchain version doesn't support. Ignoring because you've set LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN, but very soon your toolchain won't be supported.")
|
|
else()
|
|
message(FATAL_ERROR "libstdc++ version should be at least ${GCC_SOFT_ERROR} because LLVM will soon use new C++ features which your toolchain version doesn't support. You can temporarily opt out using LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN, but very soon your toolchain won't be supported.")
|
|
endif()
|
|
endif()
|
|
set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
|
|
set(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES})
|
|
endif()
|
|
endif()
|