41abca4355
Summary: Hi Michal, Would you be able to review this simple fix, please? Since r291504 compiler-rt uses `llvm-config --cmakedir` to get the path to the LLVM CMake modules. On Windows this option returns Windows style path with backslashes. CMake treats backslashes as beginning of an escaped character and thus fails to append the path to `CMAKE_MODULE_PATH`. Reviewers: compnerd, mgorny Reviewed By: mgorny Subscribers: compnerd, llvm-commits, dberris Differential Revision: https://reviews.llvm.org/D28908 llvm-svn: 293195
275 lines
9.3 KiB
CMake
275 lines
9.3 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(argstring "${CMAKE_EXE_LINKER_FLAGS} ${argstring}")
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set(FLAG_NO_EXCEPTIONS "")
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if(COMPILER_RT_HAS_FNO_EXCEPTIONS_FLAG)
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set(FLAG_NO_EXCEPTIONS " -fno-exceptions ")
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endif()
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try_compile(CAN_TARGET_${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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CMAKE_FLAGS "-DCMAKE_EXE_LINKER_FLAGS:STRING=${argstring}")
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endif()
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endif()
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if(${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(__i686__ "" __I686)
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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(__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(__I686)
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add_default_target_arch(i686)
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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(__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(FATAL_ERROR "llvm-config not found: specify LLVM_CONFIG_PATH")
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endif()
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endif()
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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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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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list(GET TARGET_TRIPLE_LIST 1 COMPILER_RT_DEFAULT_TARGET_OS)
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list(LENGTH TARGET_TRIPLE_LIST TARGET_TRIPLE_LIST_LENGTH)
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if(TARGET_TRIPLE_LIST_LENGTH GREATER 2)
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list(GET TARGET_TRIPLE_LIST 2 COMPILER_RT_DEFAULT_TARGET_ABI)
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endif()
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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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