Files
RedBear-OS/local/recipes/dev/libclc/source/compiler-rt/cmake/Modules/CompilerRTMockLLVMCMakeConfig.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

81 lines
3.2 KiB
CMake

# This macro mocks enough of the changes `LLVMConfig.cmake` makes so that
# compiler-rt can successfully configure itself when a LLVM toolchain is
# available but the corresponding CMake build files are not.
#
# The motivation for this is to be able to generate the compiler-rt
# lit tests suites and run them against an arbitrary LLVM toolchain
# which doesn't ship the LLVM CMake build files.
macro(compiler_rt_mock_llvm_cmake_config)
message(STATUS "Attempting to mock the changes made by LLVMConfig.cmake")
compiler_rt_mock_llvm_cmake_config_set_cmake_path()
compiler_rt_mock_llvm_cmake_config_set_target_triple()
compiler_rt_mock_llvm_cmake_config_include_cmake_files()
endmacro()
macro(compiler_rt_mock_llvm_cmake_config_set_cmake_path)
# Point `LLVM_CMAKE_DIR` at the source tree in the monorepo.
set(LLVM_CMAKE_DIR "${LLVM_MAIN_SRC_DIR}/cmake/modules")
if (NOT EXISTS "${LLVM_CMAKE_DIR}")
message(FATAL_ERROR "LLVM_CMAKE_DIR (${LLVM_CMAKE_DIR}) does not exist")
endif()
list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
message(STATUS "LLVM_CMAKE_DIR: \"${LLVM_CMAKE_DIR}\"")
endmacro()
function(compiler_rt_mock_llvm_cmake_config_set_target_triple)
# Various bits of compiler-rt depend on the `LLVM_TARGET_TRIPLE` variable
# being defined. This function tries to set a sensible value for the
# variable. This is a function rather than a macro to avoid polluting the
# variable namespace.
set(COMPILER_OUTPUT "")
# If the user provides `COMPILER_RT_DEFAULT_TARGET_ONLY` and `CMAKE_C_COMPILER_TARGET`
# (see `construct_compiler_rt_default_triple`) then prefer that to examining the
# compiler.
if (COMPILER_RT_DEFAULT_TARGET_ONLY)
if (NOT "${CMAKE_C_COMPILER_TARGET}" STREQUAL "")
message(STATUS
"Using CMAKE_C_COMPILER_TARGET (${CMAKE_C_COMPILER_TARGET}) as LLVM_TARGET_TRIPLE")
endif()
set(COMPILER_OUTPUT "${CMAKE_C_COMPILER_TARGET}")
endif()
# Try asking the compiler for its default target triple.
set(HAD_ERROR FALSE)
if ("${COMPILER_OUTPUT}" STREQUAL "")
if ("${CMAKE_C_COMPILER_ID}" MATCHES "Clang|GNU")
# Note: Clang also supports `-print-target-triple` but gcc doesn't
# support this flag.
set(DUMPMACHINE_ARG -dumpmachine)
if(MSVC)
# Use /clang:-dumpmachine for clang-cl.
set(DUMPMACHINE_ARG /clang:-dumpmachine)
endif()
execute_process(
COMMAND "${CMAKE_C_COMPILER}" ${DUMPMACHINE_ARG}
RESULT_VARIABLE HAD_ERROR
OUTPUT_VARIABLE COMPILER_OUTPUT
OUTPUT_STRIP_TRAILING_WHITESPACE)
else()
message(FATAL_ERROR
"Fetching target triple from compiler \"${CMAKE_C_COMPILER_ID}\" "
"is not implemented.")
endif()
endif()
if (HAD_ERROR)
message(FATAL_ERROR "Fetching target triple from compiler failed")
endif()
set(LLVM_TARGET_TRIPLE "${COMPILER_OUTPUT}")
message(STATUS "TARGET_TRIPLE: \"${LLVM_TARGET_TRIPLE}\"")
if ("${LLVM_TARGET_TRIPLE}" STREQUAL "")
message(FATAL_ERROR "TARGET_TRIPLE cannot be empty")
endif()
set(LLVM_TARGET_TRIPLE "${LLVM_TARGET_TRIPLE}" PARENT_SCOPE)
endfunction()
macro(compiler_rt_mock_llvm_cmake_config_include_cmake_files)
# Some compiler-rt CMake code needs to call code in this file.
include("${LLVM_CMAKE_DIR}/AddLLVM.cmake")
endmacro()