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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 14 | pmbaty | 1 | # This function returns the messages of various POSIX error codes as they are returned by std::error_code. |
| 2 | # The purpose of this function is to supply those error messages to llvm-lit using the errc_messages config. |
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| 3 | # Currently supplied and needed error codes: ENOENT, EISDIR, EINVAL and EACCES. |
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| 4 | # Messages are semi colon separated. |
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| 5 | # Keep amount, order and tested error codes in sync with llvm/utils/lit/lit/llvm/config.py. |
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| 6 | function(get_errc_messages outvar) |
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| 7 | if(CMAKE_CROSSCOMPILING AND NOT CMAKE_CROSSCOMPILING_EMULATOR AND NOT DEFINED errc_exit_code) |
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| 8 | set(${outvar} "" PARENT_SCOPE) |
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| 9 | message(STATUS "Can't get errc messages in cross-compilation mode") |
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| 10 | return() |
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| 11 | endif() |
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| 12 | |||
| 13 | set(errc_test_code ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/getErrc.cpp) |
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| 14 | |||
| 15 | file(WRITE ${errc_test_code} " |
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| 16 | #include <cerrno> |
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| 17 | #include <iostream> |
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| 18 | #include <string> |
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| 19 | #include <system_error> |
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| 20 | |||
| 21 | std::string getMessageFor(int err) { |
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| 22 | return std::make_error_code(static_cast<std::errc>(err)).message(); |
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| 23 | } |
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| 24 | |||
| 25 | int main() { |
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| 26 | std::cout << getMessageFor(ENOENT) << ';' << getMessageFor(EISDIR); |
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| 27 | std::cout << ';' << getMessageFor(EINVAL) << ';' << getMessageFor(EACCES); |
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| 28 | return 0; |
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| 29 | } |
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| 30 | ") |
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| 31 | |||
| 32 | try_run(errc_exit_code |
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| 33 | errc_compiled |
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| 34 | ${CMAKE_BINARY_DIR} |
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| 35 | ${errc_test_code} |
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| 36 | RUN_OUTPUT_VARIABLE errc_result |
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| 37 | COMPILE_OUTPUT_VARIABLE errc_compile_errors) |
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| 38 | if (errc_compiled AND "${errc_exit_code}" STREQUAL "0") |
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| 39 | set(${outvar} ${errc_result} PARENT_SCOPE) |
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| 40 | else() |
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| 41 | set(${outvar} "" PARENT_SCOPE) |
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| 42 | message(NOTICE "${errc_compile_errors}") |
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| 43 | message(STATUS "Failed to get errc messages") |
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| 44 | endif () |
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| 45 | endfunction() |