cmake HAVE_LZMA_STREAM_ENCODER_MT examples

libarchive/libarchive CMakeLists.txt :540 

CHECK_C_SOURCE_COMPILES(
    "#include <lzma.h>\n#if LZMA_VERSION < 50020000\n#error unsupported\n#endif\nint main(void){int ignored __attribute__((unused)); ignored = lzma_stream_encoder_mt(0, 0); return 0;}"
    HAVE_LZMA_STREAM_ENCODER_MT)