Files
RedBear-OS/local/recipes/dev/libclc/source/llvm/cmake/modules/CheckCompilerVersion.cmake
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class)
verify-patch-sanity.py validates every active recipe .patch has internally-
consistent hunk line counts — catching the 'malformed patch at line N' failure
at commit/CI/preflight time instead of hours into a cook. This cycle hit that
class three times (qtwaylandscanner, sddm, xwayland), each only discovered when
cookbook tried to apply the patch.

Running it across the repo found 29 latent malformed patches (validated against
GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22').
They were harmless only because they sit in vendored recipes (baked, not re-
applied) — but would fail on any version-bump re-derivation. --fix recounts the
hunk headers (body untouched) and repaired all 29.

Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test
(test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats
(empty placeholders, bare-@@ git hunks).
2026-08-01 05:13:02 +03:00

111 lines
5.0 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 7.4)
set(GCC_SOFT_ERROR 7.4)
set(CLANG_MIN 5.0)
set(CLANG_SOFT_ERROR 5.0)
set(APPLECLANG_MIN 10.0)
set(APPLECLANG_SOFT_ERROR 10.0)
# https://en.wikipedia.org/wiki/Microsoft_Visual_C#Internal_version_numbering
# _MSC_VER == 1928 MSVC++ 19.27 Visual Studio 2019 Version 16.8 + 16.9
set(MSVC_MIN 19.28)
set(MSVC_SOFT_ERROR 19.28)
set(LIBSTDCXX_MIN 7)
set(LIBSTDCXX_SOFT_ERROR 7)
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} ${MSVC_SOFT_ERROR})
# See https://developercommunity.visualstudio.com/content/problem/845933/miscompile-boolean-condition-deduced-to-be-always.html
# and thread "[llvm-dev] Longstanding failing tests - clang-tidy, MachO, Polly"
# on llvm-dev Jan 21-23 2020.
if ((${CMAKE_CXX_COMPILER_ID} STREQUAL MSVC) AND
(19.24 VERSION_LESS_EQUAL ${CMAKE_CXX_COMPILER_VERSION}) AND
(${CMAKE_CXX_COMPILER_VERSION} VERSION_LESS 19.25))
if(LLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN)
message(WARNING "Host Visual Studio version 16.4 is known to miscompile part of LLVM")
else()
message(FATAL_ERROR "Host Visual Studio version 16.4 is known to miscompile part of LLVM, please use clang-cl or upgrade to 16.5 or above (use -DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON to ignore)")
endif()
endif()
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")
check_cxx_source_compiles("
#include <iosfwd>
#if defined(__GLIBCXX__)
#if !defined(_GLIBCXX_RELEASE) || _GLIBCXX_RELEASE < ${LIBSTDCXX_MIN}
#error Unsupported libstdc++ version
#endif
#endif
int main() { return 0; }
"
LLVM_LIBSTDCXX_MIN)
if(NOT LLVM_LIBSTDCXX_MIN)
message(FATAL_ERROR "libstdc++ version must be at least ${GCC_MIN}.")
endif()
check_cxx_source_compiles("
#include <iosfwd>
#if defined(__GLIBCXX__)
#if !defined(_GLIBCXX_RELEASE) || _GLIBCXX_RELEASE < ${LIBSTDCXX_SOFT_ERROR}
#error Unsupported libstdc++ version
#endif
#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 ${LIBSTDCXX_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 ${LIBSTDCXX_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()