39f0860743
compiler-rt CMake build currently tries to parse the triple and then put it back together, but doing so inherently tricky, and doing so from CMake is just crazy and currently doesn't handle triples that have more than three components. Fortunatelly, the CMake really only needs the architecture part, which is typically the first component, to construct variants for other architectures. This means we can keep the rest of the triple as is and avoid the parsing altogether. Differential Revision: https://reviews.llvm.org/D50548 llvm-svn: 339701
381 lines
13 KiB
CMake
381 lines
13 KiB
CMake
include(CMakePushCheckState)
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include(CheckSymbolExists)
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# Because compiler-rt spends a lot of time setting up custom compile flags,
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# define a handy helper function for it. The compile flags setting in CMake
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# has serious issues that make its syntax challenging at best.
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function(set_target_compile_flags target)
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set(argstring "")
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foreach(arg ${ARGN})
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set(argstring "${argstring} ${arg}")
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endforeach()
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set_property(TARGET ${target} PROPERTY COMPILE_FLAGS "${argstring}")
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endfunction()
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function(set_target_link_flags target)
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set(argstring "")
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foreach(arg ${ARGN})
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set(argstring "${argstring} ${arg}")
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endforeach()
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set_property(TARGET ${target} PROPERTY LINK_FLAGS "${argstring}")
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endfunction()
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# Set the variable var_PYBOOL to True if var holds a true-ish string,
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# otherwise set it to False.
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macro(pythonize_bool var)
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if (${var})
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set(${var}_PYBOOL True)
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else()
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set(${var}_PYBOOL False)
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endif()
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endmacro()
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# Appends value to all lists in ARGN, if the condition is true.
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macro(append_list_if condition value)
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if(${condition})
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foreach(list ${ARGN})
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list(APPEND ${list} ${value})
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endforeach()
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endif()
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endmacro()
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# Appends value to all strings in ARGN, if the condition is true.
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macro(append_string_if condition value)
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if(${condition})
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foreach(str ${ARGN})
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set(${str} "${${str}} ${value}")
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endforeach()
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endif()
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endmacro()
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macro(append_rtti_flag polarity list)
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if(${polarity})
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append_list_if(COMPILER_RT_HAS_FRTTI_FLAG -frtti ${list})
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append_list_if(COMPILER_RT_HAS_GR_FLAG /GR ${list})
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else()
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append_list_if(COMPILER_RT_HAS_FNO_RTTI_FLAG -fno-rtti ${list})
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append_list_if(COMPILER_RT_HAS_GR_FLAG /GR- ${list})
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endif()
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endmacro()
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macro(append_have_file_definition filename varname list)
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check_include_file("${filename}" "${varname}")
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if (NOT ${varname})
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set("${varname}" 0)
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endif()
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list(APPEND ${list} "${varname}=${${varname}}")
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endmacro()
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macro(list_intersect output input1 input2)
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set(${output})
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foreach(it ${${input1}})
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list(FIND ${input2} ${it} index)
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if( NOT (index EQUAL -1))
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list(APPEND ${output} ${it})
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endif()
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endforeach()
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endmacro()
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function(list_replace input_list old new)
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set(replaced_list)
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foreach(item ${${input_list}})
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if(${item} STREQUAL ${old})
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list(APPEND replaced_list ${new})
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else()
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list(APPEND replaced_list ${item})
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endif()
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endforeach()
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set(${input_list} "${replaced_list}" PARENT_SCOPE)
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endfunction()
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# Takes ${ARGN} and puts only supported architectures in @out_var list.
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function(filter_available_targets out_var)
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set(archs ${${out_var}})
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foreach(arch ${ARGN})
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list(FIND COMPILER_RT_SUPPORTED_ARCH ${arch} ARCH_INDEX)
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if(NOT (ARCH_INDEX EQUAL -1) AND CAN_TARGET_${arch})
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list(APPEND archs ${arch})
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endif()
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endforeach()
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set(${out_var} ${archs} PARENT_SCOPE)
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endfunction()
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# Add $arch as supported with no additional flags.
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macro(add_default_target_arch arch)
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set(TARGET_${arch}_CFLAGS "")
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set(CAN_TARGET_${arch} 1)
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list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
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endmacro()
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function(check_compile_definition def argstring out_var)
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if("${def}" STREQUAL "")
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set(${out_var} TRUE PARENT_SCOPE)
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return()
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endif()
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cmake_push_check_state()
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set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} ${argstring}")
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check_symbol_exists(${def} "" ${out_var})
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cmake_pop_check_state()
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endfunction()
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# test_target_arch(<arch> <def> <target flags...>)
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# Checks if architecture is supported: runs host compiler with provided
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# flags to verify that:
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# 1) <def> is defined (if non-empty)
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# 2) simple file can be successfully built.
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# If successful, saves target flags for this architecture.
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macro(test_target_arch arch def)
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set(TARGET_${arch}_CFLAGS ${ARGN})
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set(TARGET_${arch}_LINK_FLAGS ${ARGN})
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set(argstring "")
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foreach(arg ${ARGN})
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set(argstring "${argstring} ${arg}")
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endforeach()
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check_compile_definition("${def}" "${argstring}" HAS_${arch}_DEF)
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if(NOT DEFINED CAN_TARGET_${arch})
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if(NOT HAS_${arch}_DEF)
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set(CAN_TARGET_${arch} FALSE)
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elseif(TEST_COMPILE_ONLY)
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try_compile_only(CAN_TARGET_${arch} ${TARGET_${arch}_CFLAGS})
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else()
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set(FLAG_NO_EXCEPTIONS "")
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if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG)
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set(FLAG_NO_EXCEPTIONS " -fno-exceptions ")
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endif()
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set(SAVED_CMAKE_EXE_LINKER_FLAGS ${CMAKE_EXE_LINKER_FLAGS})
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set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${argstring}")
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try_compile(CAN_TARGET_${arch} ${CMAKE_BINARY_DIR} ${SIMPLE_SOURCE}
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COMPILE_DEFINITIONS "${TARGET_${arch}_CFLAGS} ${FLAG_NO_EXCEPTIONS}"
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OUTPUT_VARIABLE TARGET_${arch}_OUTPUT)
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set(CMAKE_EXE_LINKER_FLAGS ${SAVED_CMAKE_EXE_LINKER_FLAGS})
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endif()
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endif()
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if(${CAN_TARGET_${arch}})
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list(APPEND COMPILER_RT_SUPPORTED_ARCH ${arch})
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elseif("${COMPILER_RT_DEFAULT_TARGET_ARCH}" STREQUAL "${arch}" AND
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COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE)
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# Bail out if we cannot target the architecture we plan to test.
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message(FATAL_ERROR "Cannot compile for ${arch}:\n${TARGET_${arch}_OUTPUT}")
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endif()
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endmacro()
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macro(detect_target_arch)
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check_symbol_exists(__arm__ "" __ARM)
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check_symbol_exists(__aarch64__ "" __AARCH64)
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check_symbol_exists(__x86_64__ "" __X86_64)
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check_symbol_exists(__i386__ "" __I386)
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check_symbol_exists(__mips__ "" __MIPS)
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check_symbol_exists(__mips64__ "" __MIPS64)
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check_symbol_exists(__powerpc64__ "" __PPC64)
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check_symbol_exists(__powerpc64le__ "" __PPC64LE)
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check_symbol_exists(__riscv "" __RISCV)
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check_symbol_exists(__s390x__ "" __S390X)
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check_symbol_exists(__wasm32__ "" __WEBASSEMBLY32)
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check_symbol_exists(__wasm64__ "" __WEBASSEMBLY64)
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if(__ARM)
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add_default_target_arch(arm)
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elseif(__AARCH64)
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add_default_target_arch(aarch64)
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elseif(__X86_64)
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add_default_target_arch(x86_64)
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elseif(__I386)
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add_default_target_arch(i386)
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elseif(__MIPS64) # must be checked before __MIPS
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add_default_target_arch(mips64)
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elseif(__MIPS)
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add_default_target_arch(mips)
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elseif(__PPC64)
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add_default_target_arch(powerpc64)
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elseif(__PPC64LE)
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add_default_target_arch(powerpc64le)
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elseif(__RISCV)
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if(CMAKE_SIZEOF_VOID_P EQUAL "4")
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add_default_target_arch(riscv32)
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elseif(CMAKE_SIZEOF_VOID_P EQUAL "8")
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add_default_target_arch(riscv64)
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else()
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message(FATAL_ERROR "Unsupport XLEN for RISC-V")
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endif()
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elseif(__S390X)
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add_default_target_arch(s390x)
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elseif(__WEBASSEMBLY32)
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add_default_target_arch(wasm32)
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elseif(__WEBASSEMBLY64)
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add_default_target_arch(wasm64)
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endif()
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endmacro()
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macro(load_llvm_config)
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if (NOT LLVM_CONFIG_PATH)
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find_program(LLVM_CONFIG_PATH "llvm-config"
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DOC "Path to llvm-config binary")
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if (NOT LLVM_CONFIG_PATH)
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message(WARNING "UNSUPPORTED COMPILER-RT CONFIGURATION DETECTED: "
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"llvm-config not found.\n"
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"Reconfigure with -DLLVM_CONFIG_PATH=path/to/llvm-config.")
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endif()
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endif()
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if (LLVM_CONFIG_PATH)
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execute_process(
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COMMAND ${LLVM_CONFIG_PATH} "--obj-root" "--bindir" "--libdir" "--src-root"
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RESULT_VARIABLE HAD_ERROR
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OUTPUT_VARIABLE CONFIG_OUTPUT)
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if (HAD_ERROR)
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message(FATAL_ERROR "llvm-config failed with status ${HAD_ERROR}")
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endif()
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string(REGEX REPLACE "[ \t]*[\r\n]+[ \t]*" ";" CONFIG_OUTPUT ${CONFIG_OUTPUT})
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list(GET CONFIG_OUTPUT 0 BINARY_DIR)
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list(GET CONFIG_OUTPUT 1 TOOLS_BINARY_DIR)
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list(GET CONFIG_OUTPUT 2 LIBRARY_DIR)
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list(GET CONFIG_OUTPUT 3 MAIN_SRC_DIR)
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set(LLVM_BINARY_DIR ${BINARY_DIR} CACHE PATH "Path to LLVM build tree")
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set(LLVM_TOOLS_BINARY_DIR ${TOOLS_BINARY_DIR} CACHE PATH "Path to llvm/bin")
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set(LLVM_LIBRARY_DIR ${LIBRARY_DIR} CACHE PATH "Path to llvm/lib")
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set(LLVM_MAIN_SRC_DIR ${MAIN_SRC_DIR} CACHE PATH "Path to LLVM source tree")
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# Make use of LLVM CMake modules.
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# --cmakedir is supported since llvm r291218 (4.0 release)
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execute_process(
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COMMAND ${LLVM_CONFIG_PATH} --cmakedir
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RESULT_VARIABLE HAD_ERROR
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OUTPUT_VARIABLE CONFIG_OUTPUT)
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if(NOT HAD_ERROR)
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string(STRIP "${CONFIG_OUTPUT}" LLVM_CMAKE_PATH_FROM_LLVM_CONFIG)
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file(TO_CMAKE_PATH ${LLVM_CMAKE_PATH_FROM_LLVM_CONFIG} LLVM_CMAKE_PATH)
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else()
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file(TO_CMAKE_PATH ${LLVM_BINARY_DIR} LLVM_BINARY_DIR_CMAKE_STYLE)
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set(LLVM_CMAKE_PATH "${LLVM_BINARY_DIR_CMAKE_STYLE}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
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endif()
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list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_PATH}")
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# Get some LLVM variables from LLVMConfig.
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include("${LLVM_CMAKE_PATH}/LLVMConfig.cmake")
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set(LLVM_LIBRARY_OUTPUT_INTDIR
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${LLVM_BINARY_DIR}/${CMAKE_CFG_INTDIR}/lib${LLVM_LIBDIR_SUFFIX})
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endif()
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endmacro()
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macro(construct_compiler_rt_default_triple)
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if(COMPILER_RT_DEFAULT_TARGET_ONLY)
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if(DEFINED COMPILER_RT_DEFAULT_TARGET_TRIPLE)
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message(FATAL_ERROR "COMPILER_RT_DEFAULT_TARGET_TRIPLE isn't supported when building for default target only")
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endif()
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set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${CMAKE_C_COMPILER_TARGET})
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else()
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set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${TARGET_TRIPLE} CACHE STRING
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"Default triple for which compiler-rt runtimes will be built.")
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endif()
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if(DEFINED COMPILER_RT_TEST_TARGET_TRIPLE)
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# Backwards compatibility: this variable used to be called
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# COMPILER_RT_TEST_TARGET_TRIPLE.
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set(COMPILER_RT_DEFAULT_TARGET_TRIPLE ${COMPILER_RT_TEST_TARGET_TRIPLE})
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endif()
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string(REPLACE "-" ";" TARGET_TRIPLE_LIST ${COMPILER_RT_DEFAULT_TARGET_TRIPLE})
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list(GET TARGET_TRIPLE_LIST 0 COMPILER_RT_DEFAULT_TARGET_ARCH)
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# Determine if test target triple is specified explicitly, and doesn't match the
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# default.
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if(NOT COMPILER_RT_DEFAULT_TARGET_TRIPLE STREQUAL TARGET_TRIPLE)
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set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE TRUE)
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else()
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set(COMPILER_RT_HAS_EXPLICIT_DEFAULT_TARGET_TRIPLE FALSE)
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endif()
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endmacro()
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# Filter out generic versions of routines that are re-implemented in
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# architecture specific manner. This prevents multiple definitions of the
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# same symbols, making the symbol selection non-deterministic.
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function(filter_builtin_sources output_var exclude_or_include excluded_list)
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if(exclude_or_include STREQUAL "EXCLUDE")
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set(filter_action GREATER)
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set(filter_value -1)
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elseif(exclude_or_include STREQUAL "INCLUDE")
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set(filter_action LESS)
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set(filter_value 0)
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else()
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message(FATAL_ERROR "filter_builtin_sources called without EXCLUDE|INCLUDE")
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endif()
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set(intermediate ${ARGN})
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foreach (_file ${intermediate})
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get_filename_component(_name_we ${_file} NAME_WE)
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list(FIND ${excluded_list} ${_name_we} _found)
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if(_found ${filter_action} ${filter_value})
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list(REMOVE_ITEM intermediate ${_file})
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elseif(${_file} MATCHES ".*/.*\\.S" OR ${_file} MATCHES ".*/.*\\.c")
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get_filename_component(_name ${_file} NAME)
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string(REPLACE ".S" ".c" _cname "${_name}")
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list(REMOVE_ITEM intermediate ${_cname})
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endif ()
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endforeach ()
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set(${output_var} ${intermediate} PARENT_SCOPE)
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endfunction()
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function(get_compiler_rt_target arch variable)
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string(FIND ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} "-" dash_index)
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string(SUBSTRING ${COMPILER_RT_DEFAULT_TARGET_TRIPLE} ${dash_index} -1 triple_suffix)
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if(ANDROID AND ${arch} STREQUAL "i386")
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set(target "i686${COMPILER_RT_OS_SUFFIX}${triple_suffix}")
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else()
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set(target "${arch}${triple_suffix}")
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endif()
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set(${variable} ${target} PARENT_SCOPE)
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endfunction()
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function(get_compiler_rt_install_dir arch install_dir)
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if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
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get_compiler_rt_target(${arch} target)
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set(${install_dir} ${COMPILER_RT_INSTALL_PATH}/${target}/lib PARENT_SCOPE)
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else()
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set(${install_dir} ${COMPILER_RT_LIBRARY_INSTALL_DIR} PARENT_SCOPE)
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endif()
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endfunction()
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function(get_compiler_rt_output_dir arch output_dir)
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if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
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get_compiler_rt_target(${arch} target)
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set(${output_dir} ${COMPILER_RT_OUTPUT_DIR}/${target}/lib PARENT_SCOPE)
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else()
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set(${output_dir} ${COMPILER_RT_LIBRARY_OUTPUT_DIR} PARENT_SCOPE)
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endif()
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endfunction()
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# compiler_rt_process_sources(
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# <OUTPUT_VAR>
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# <SOURCE_FILE> ...
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# [ADDITIONAL_HEADERS <header> ...]
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# )
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#
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# Process the provided sources and write the list of new sources
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# into `<OUTPUT_VAR>`.
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#
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# ADDITIONAL_HEADERS - Adds the supplied header to list of sources for IDEs.
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#
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# This function is very similar to `llvm_process_sources()` but exists here
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# because we need to support standalone builds of compiler-rt.
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function(compiler_rt_process_sources OUTPUT_VAR)
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cmake_parse_arguments(
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ARG
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""
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""
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"ADDITIONAL_HEADERS"
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${ARGN}
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)
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set(sources ${ARG_UNPARSED_ARGUMENTS})
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set(headers "")
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if (XCODE OR MSVC_IDE OR CMAKE_EXTRA_GENERATOR)
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# For IDEs we need to tell CMake about header files.
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# Otherwise they won't show up in UI.
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set(headers ${ARG_ADDITIONAL_HEADERS})
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list(LENGTH headers headers_length)
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if (${headers_length} GREATER 0)
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set_source_files_properties(${headers}
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PROPERTIES HEADER_FILE_ONLY ON)
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endif()
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endif()
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set("${OUTPUT_VAR}" ${sources} ${headers} PARENT_SCOPE)
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endfunction()
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