https://docs.conan.io/en/latest/reference/config_files/settings.yml.html

    Conan中包的输入设置是在~/. Conan /settings中预定义的。yml文件，所以只有少数像os或编译器是可能的。这些是默认值，但是可以自定义它们，请参阅自定义设置。

    1. # Only for cross building, 'os_build/arch_build' is the system that runs Conan
    2. os_build: [Windows, WindowsStore, Linux, Macos, FreeBSD, SunOS, AIX]
    3. arch_build: [x86, x86_64, ppc32be, ppc32, ppc64le, ppc64, armv5el, armv5hf, armv6, armv7, armv7hf, armv7s, armv7k, armv8, armv8_32, armv8.3, sparc, sparcv9, mips, mips64, avr, s390, s390x, sh4le]
    5. # Only for building cross compilation tools, 'os_target/arch_target' is the system for
    6. # which the tools generate code
    7. os_target: [Windows, Linux, Macos, Android, iOS, watchOS, tvOS, FreeBSD, SunOS, AIX, Arduino, Neutrino]
    8. arch_target: [x86, x86_64, ppc32be, ppc32, ppc64le, ppc64, armv5el, armv5hf, armv6, armv7, armv7hf, armv7s, armv7k, armv8, armv8_32, armv8.3, sparc, sparcv9, mips, mips64, avr, s390, s390x, asm.js, wasm, sh4le]
    10. # Rest of the settings are "host" settings:
    11. # - For native building/cross building: Where the library/program will run.
    12. # - For building cross compilation tools: Where the cross compiler will run.
    13. os:
    14.     Windows:
    15.         subsystem: [None, cygwin, msys, msys2, wsl]
    16.     WindowsStore:
    17.         version: ["8.1", "10.0"]
    18.     WindowsCE:
    19.         platform: ANY
    20.         version: ["5.0", "6.0", "7.0", "8.0"]
    21.     Linux:
    22.     Macos:
    23.         version: [None, "10.6", "10.7", "10.8", "10.9", "10.10", "10.11", "10.12", "10.13", "10.14", "10.15", "11.0"]
    24.     Android:
    25.         api_level: ANY
    26.     iOS:
    27.         version: ["7.0", "7.1", "8.0", "8.1", "8.2", "8.3", "9.0", "9.1", "9.2", "9.3", "10.0", "10.1", "10.2", "10.3", "11.0", "11.1", "11.2", "11.3", "11.4", "12.0", "12.1", "12.2", "12.3", "12.4", "13.0", "13.1", "13.2", "13.3", "13.4", "13.5", "13.6"]
    28.     watchOS:
    29.         version: ["4.0", "4.1", "4.2", "4.3", "5.0", "5.1", "5.2", "5.3", "6.0", "6.1"]
    30.     tvOS:
    31.         version: ["11.0", "11.1", "11.2", "11.3", "11.4", "12.0", "12.1", "12.2", "12.3", "12.4", "13.0"]
    32.     FreeBSD:
    33.     SunOS:
    34.     AIX:
    35.     Arduino:
    36.         board: ANY
    37.     Emscripten:
    38.     Neutrino:
    39.         version: ["6.4", "6.5", "6.6", "7.0"]
    40. arch: [x86, x86_64, ppc32be, ppc32, ppc64le, ppc64, armv4, armv4i, armv5el, armv5hf, armv6, armv7, armv7hf, armv7s, armv7k, armv8, armv8_32, armv8.3, sparc, sparcv9, mips, mips64, avr, s390, s390x, asm.js, wasm, sh4le]
    41. compiler:
    42.     sun-cc:
    43.         version: ["5.10", "5.11", "5.12", "5.13", "5.14"]
    44.         threads: [None, posix]
    45.         libcxx: [libCstd, libstdcxx, libstlport, libstdc++]
    46.     gcc: &gcc
    47.         version: ["4.1", "4.4", "4.5", "4.6", "4.7", "4.8", "4.9",
    48.                   "5", "5.1", "5.2", "5.3", "5.4", "5.5",
    49.                   "6", "6.1", "6.2", "6.3", "6.4", "6.5",
    50.                   "7", "7.1", "7.2", "7.3", "7.4", "7.5",
    51.                   "8", "8.1", "8.2", "8.3", "8.4",
    52.                   "9", "9.1", "9.2", "9.3",
    53.                   "10", "10.1"]
    54.         libcxx: [libstdc++, libstdc++11]
    55.         threads: [None, posix, win32] #  Windows MinGW
    56.         exception: [None, dwarf2, sjlj, seh] # Windows MinGW
    57.         cppstd: [None, 98, gnu98, 11, gnu11, 14, gnu14, 17, gnu17, 20, gnu20]
    58.     Visual Studio: &visual_studio
    59.         runtime: [MD, MT, MTd, MDd]
    60.         version: ["8", "9", "10", "11", "12", "14", "15", "16"]
    61.         toolset: [None, v90, v100, v110, v110_xp, v120, v120_xp,
    62.                   v140, v140_xp, v140_clang_c2, LLVM-vs2012, LLVM-vs2012_xp,
    63.                   LLVM-vs2013, LLVM-vs2013_xp, LLVM-vs2014, LLVM-vs2014_xp,
    64.                   LLVM-vs2017, LLVM-vs2017_xp, v141, v141_xp, v141_clang_c2, v142,
    65.                   llvm, ClangCL]
    66.         cppstd: [None, 14, 17, 20]
    67.     clang:
    68.         version: ["3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "4.0",
    69.                   "5.0", "6.0", "7.0", "7.1",
    70.                   "8", "9", "10", "11"]
    71.         libcxx: [None, libstdc++, libstdc++11, libc++, c++_shared, c++_static]
    72.         cppstd: [None, 98, gnu98, 11, gnu11, 14, gnu14, 17, gnu17, 20, gnu20]
    73.         runtime: [None, MD, MT, MTd, MDd]
    74.     apple-clang: &apple_clang
    75.         version: ["5.0", "5.1", "6.0", "6.1", "7.0", "7.3", "8.0", "8.1", "9.0", "9.1", "10.0", "11.0", "12.0"]
    76.         libcxx: [libstdc++, libc++]
    77.         cppstd: [None, 98, gnu98, 11, gnu11, 14, gnu14, 17, gnu17, 20, gnu20]
    78.     intel:
    79.         version: ["11", "12", "13", "14", "15", "16", "17", "18", "19"]
    80.         base:
    81.             gcc:
    82.                 <<: *gcc
    83.                 threads: [None]
    84.                 exception: [None]
    85.             Visual Studio:
    86.                 <<: *visual_studio
    87.             apple-clang:
    88.                 <<: *apple_clang
    89.     qcc:
    90.         version: ["4.4", "5.4"]
    91.         libcxx: [cxx, gpp, cpp, cpp-ne, accp, acpp-ne, ecpp, ecpp-ne]
    93. build_type: [None, Debug, Release, RelWithDebInfo, MinSizeRel]
    94. cppstd: [None, 98, gnu98, 11, gnu11, 14, gnu14, 17, gnu17, 20, gnu20]  # Deprecated, use compiler.cppstd

    可以看到，设置可以接受的可能值被限制在同一个文件中。这样做是为了确保匹配的命名和拼写，以及在用户和OSS社区中定义一个通用的设置模型。如果允许将设置设置为任何值，则可以使用any。如果允许将一个设置设置为任何值，或者也可以取消设置，您可以使用[None, any]。

    但是，可以根据需要修改此配置文件，包括新设置或子设置及其值。如果您想分发一个统一的设置。文件可以使用柯南配置安装命令。