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c7fbf3b5e8
Call `get_errc_messages` only if `LLVM_INCLUDE_TESTS` was set. Reviewed By: zero9178, abhina.sreeskantharajan, jhenderson Differential Revision: https://reviews.llvm.org/D98861
44 lines
1.7 KiB
CMake
44 lines
1.7 KiB
CMake
# This function returns the messages of various POSIX error codes as they are returned by std::error_code.
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# The purpose of this function is to supply those error messages to llvm-lit using the errc_messages config.
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# Currently supplied and needed error codes: ENOENT, EISDIR, EINVAL and EACCES.
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# Messages are semi colon separated.
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# Keep amount, order and tested error codes in sync with llvm/utils/lit/lit/llvm/config.py.
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function(get_errc_messages outvar)
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if(CMAKE_CROSSCOMPILING AND NOT CMAKE_CROSSCOMPILING_EMULATOR AND NOT DEFINED errc_exit_code)
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set(${outvar} "" PARENT_SCOPE)
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message(STATUS "Can't get errc messages in cross-compilation mode")
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return()
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endif()
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set(errc_test_code ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/getErrc.cpp)
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file(WRITE ${errc_test_code} "
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#include <cerrno>
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#include <iostream>
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#include <string>
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#include <system_error>
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std::string getMessageFor(int err) {
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return std::make_error_code(static_cast<std::errc>(err)).message();
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}
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int main() {
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std::cout << getMessageFor(ENOENT) << ';' << getMessageFor(EISDIR);
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std::cout << ';' << getMessageFor(EINVAL) << ';' << getMessageFor(EACCES);
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}
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")
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try_run(errc_exit_code
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errc_compiled
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${CMAKE_BINARY_DIR}
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${errc_test_code}
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RUN_OUTPUT_VARIABLE errc_result
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COMPILE_OUTPUT_VARIABLE errc_compile_errors)
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if (errc_compiled AND "${errc_exit_code}" STREQUAL "0")
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set(${outvar} ${errc_result} PARENT_SCOPE)
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else()
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set(${outvar} "" PARENT_SCOPE)
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message(STATUS "Failed to get errc messages")
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endif ()
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endfunction()
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