5264c22ef1
Downstream's having some issues due to math-macros.h issues. These will be fixed properly soon. See https://github.com/llvm/llvm-project/issues/87683 for tracking this tech debt.
190 lines
7.2 KiB
CMake
190 lines
7.2 KiB
CMake
function(_get_compile_options_from_flags output_var)
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set(compile_options "")
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if(LIBC_TARGET_ARCHITECTURE_IS_RISCV64 OR(LIBC_CPU_FEATURES MATCHES "FMA"))
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check_flag(ADD_FMA_FLAG ${FMA_OPT_FLAG} ${ARGN})
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endif()
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check_flag(ADD_SSE4_2_FLAG ${ROUND_OPT_FLAG} ${ARGN})
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check_flag(ADD_EXPLICIT_SIMD_OPT_FLAG ${EXPLICIT_SIMD_OPT_FLAG} ${ARGN})
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if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
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if(ADD_FMA_FLAG)
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if(LIBC_TARGET_ARCHITECTURE_IS_X86)
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list(APPEND compile_options "-mavx2")
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list(APPEND compile_options "-mfma")
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elseif(LIBC_TARGET_ARCHITECTURE_IS_RISCV64)
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list(APPEND compile_options "-D__LIBC_RISCV_USE_FMA")
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endif()
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endif()
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if(ADD_SSE4_2_FLAG)
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list(APPEND compile_options "-msse4.2")
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endif()
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if(ADD_EXPLICIT_SIMD_OPT_FLAG)
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list(APPEND compile_options "-D__LIBC_EXPLICIT_SIMD_OPT")
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endif()
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elseif(MSVC)
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if(ADD_FMA_FLAG)
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list(APPEND compile_options "/arch:AVX2")
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endif()
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if(ADD_EXPLICIT_SIMD_OPT_FLAG)
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list(APPEND compile_options "/D__LIBC_EXPLICIT_SIMD_OPT")
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endif()
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endif()
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set(${output_var} ${compile_options} PARENT_SCOPE)
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endfunction(_get_compile_options_from_flags)
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function(_get_common_compile_options output_var flags)
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_get_compile_options_from_flags(compile_flags ${flags})
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set(compile_options ${LIBC_COMPILE_OPTIONS_DEFAULT} ${compile_flags})
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if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
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list(APPEND compile_options "-fpie")
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if(LLVM_LIBC_FULL_BUILD)
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list(APPEND compile_options "-DLIBC_FULL_BUILD")
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# Only add -ffreestanding flag in full build mode.
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list(APPEND compile_options "-ffreestanding")
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endif()
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if(LIBC_COMPILER_HAS_FIXED_POINT)
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list(APPEND compile_options "-ffixed-point")
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endif()
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list(APPEND compile_options "-fno-builtin")
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list(APPEND compile_options "-fno-exceptions")
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list(APPEND compile_options "-fno-lax-vector-conversions")
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list(APPEND compile_options "-fno-unwind-tables")
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list(APPEND compile_options "-fno-asynchronous-unwind-tables")
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list(APPEND compile_options "-fno-rtti")
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if (LIBC_CC_SUPPORTS_PATTERN_INIT)
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list(APPEND compile_options "-ftrivial-auto-var-init=pattern")
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endif()
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if (LIBC_CONF_KEEP_FRAME_POINTER)
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list(APPEND compile_options "-fno-omit-frame-pointer")
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if (LIBC_TARGET_ARCHITECTURE_IS_X86)
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list(APPEND compile_options "-mno-omit-leaf-frame-pointer")
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endif()
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endif()
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if (LIBC_CONF_ENABLE_STACK_PROTECTOR)
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list(APPEND compile_options "-fstack-protector-strong")
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endif()
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list(APPEND compile_options "-Wall")
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list(APPEND compile_options "-Wextra")
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# -DLIBC_WNO_ERROR=ON if you can't build cleanly with -Werror.
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if(NOT LIBC_WNO_ERROR)
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list(APPEND compile_options "-Werror")
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endif()
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list(APPEND compile_options "-Wconversion")
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list(APPEND compile_options "-Wno-sign-conversion")
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list(APPEND compile_options "-Wimplicit-fallthrough")
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list(APPEND compile_options "-Wwrite-strings")
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list(APPEND compile_options "-Wextra-semi")
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if(NOT CMAKE_COMPILER_IS_GNUCXX)
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list(APPEND compile_options "-Wnewline-eof")
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list(APPEND compile_options "-Wnonportable-system-include-path")
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list(APPEND compile_options "-Wstrict-prototypes")
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list(APPEND compile_options "-Wthread-safety")
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list(APPEND compile_options "-Wglobal-constructors")
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endif()
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elseif(MSVC)
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list(APPEND compile_options "/EHs-c-")
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list(APPEND compile_options "/GR-")
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endif()
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if (LIBC_TARGET_OS_IS_GPU)
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list(APPEND compile_options "-nogpulib")
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list(APPEND compile_options "-fvisibility=hidden")
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list(APPEND compile_options "-fconvergent-functions")
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list(APPEND compile_options "-flto")
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list(APPEND compile_options "-Wno-multi-gpu")
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if(LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
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list(APPEND compile_options "-Wno-unknown-cuda-version")
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list(APPEND compile_options "SHELL:-mllvm -nvptx-emit-init-fini-kernel=false")
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list(APPEND compile_options "--cuda-feature=+ptx63")
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if(LIBC_CUDA_ROOT)
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list(APPEND compile_options "--cuda-path=${LIBC_CUDA_ROOT}")
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endif()
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elseif(LIBC_TARGET_ARCHITECTURE_IS_AMDGPU)
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list(APPEND compile_options "SHELL:-Xclang -mcode-object-version=none")
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endif()
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# Manually disable all standard include paths and include the resource
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# directory to prevent system headers from being included.
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list(APPEND compile_options "-isystem${COMPILER_RESOURCE_DIR}/include")
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list(APPEND compile_options "-nostdinc")
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endif()
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set(${output_var} ${compile_options} PARENT_SCOPE)
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endfunction()
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function(_get_common_test_compile_options output_var c_test flags)
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_get_compile_options_from_flags(compile_flags ${flags})
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set(compile_options ${LIBC_COMPILE_OPTIONS_DEFAULT} ${compile_flags})
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if(LLVM_COMPILER_IS_GCC_COMPATIBLE)
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list(APPEND compile_options "-fpie")
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if(LLVM_LIBC_FULL_BUILD)
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list(APPEND compile_options "-DLIBC_FULL_BUILD")
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# Only add -ffreestanding flag in full build mode.
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list(APPEND compile_options "-ffreestanding")
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list(APPEND compile_options "-fno-exceptions")
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list(APPEND compile_options "-fno-unwind-tables")
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list(APPEND compile_options "-fno-asynchronous-unwind-tables")
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if(NOT ${c_test})
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list(APPEND compile_options "-fno-rtti")
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endif()
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endif()
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if(LIBC_COMPILER_HAS_FIXED_POINT)
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list(APPEND compile_options "-ffixed-point")
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endif()
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# list(APPEND compile_options "-Wall")
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# list(APPEND compile_options "-Wextra")
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# -DLIBC_WNO_ERROR=ON if you can't build cleanly with -Werror.
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if(NOT LIBC_WNO_ERROR)
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# list(APPEND compile_options "-Werror")
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endif()
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# list(APPEND compile_options "-Wconversion")
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# list(APPEND compile_options "-Wno-sign-conversion")
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# list(APPEND compile_options "-Wimplicit-fallthrough")
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# list(APPEND compile_options "-Wwrite-strings")
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# list(APPEND compile_options "-Wextra-semi")
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# if(NOT CMAKE_COMPILER_IS_GNUCXX)
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# list(APPEND compile_options "-Wnewline-eof")
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# list(APPEND compile_options "-Wnonportable-system-include-path")
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# list(APPEND compile_options "-Wstrict-prototypes")
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# list(APPEND compile_options "-Wthread-safety")
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# list(APPEND compile_options "-Wglobal-constructors")
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# endif()
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endif()
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set(${output_var} ${compile_options} PARENT_SCOPE)
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endfunction()
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function(_get_hermetic_test_compile_options output_var flags)
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_get_compile_options_from_flags(compile_flags ${flags})
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list(APPEND compile_options ${LIBC_COMPILE_OPTIONS_DEFAULT} ${compile_flags}
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${flags} -fpie -ffreestanding -fno-exceptions -fno-rtti)
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# The GPU build requires overriding the default CMake triple and architecture.
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if(LIBC_TARGET_ARCHITECTURE_IS_AMDGPU)
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list(APPEND compile_options
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-Wno-multi-gpu -nogpulib -mcpu=${LIBC_GPU_TARGET_ARCHITECTURE} -flto
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-mcode-object-version=${LIBC_GPU_CODE_OBJECT_VERSION})
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elseif(LIBC_TARGET_ARCHITECTURE_IS_NVPTX)
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list(APPEND compile_options
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"SHELL:-mllvm -nvptx-emit-init-fini-kernel=false"
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-Wno-multi-gpu --cuda-path=${LIBC_CUDA_ROOT}
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-nogpulib -march=${LIBC_GPU_TARGET_ARCHITECTURE} -fno-use-cxa-atexit)
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endif()
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if(LLVM_LIBC_FULL_BUILD)
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list(APPEND compile_options "-DLIBC_FULL_BUILD")
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endif()
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set(${output_var} ${compile_options} PARENT_SCOPE)
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endfunction()
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