conan graph build-order-merge

$ conan graph build-order-merge -h
usage: conan graph build-order-merge [-h] [-f FORMAT] [--out-file OUT_FILE]
                                     [-v [V]] [-cc CORE_CONF] [--file [FILE]]
                                     [--reduce]

Merge more than 1 build-order file.

options:
  -h, --help            show this help message and exit
  -f FORMAT, --format FORMAT
                        Select the output format: json, html
  --out-file OUT_FILE   Write the output of the command to the specified file
                        instead of stdout.
  -v [V]                Level of detail of the output. Valid options from less
                        verbose to more verbose: -vquiet, -verror, -vwarning,
                        -vnotice, -vstatus, -v or -vverbose, -vv or -vdebug,
                        -vvv or -vtrace
  -cc CORE_CONF, --core-conf CORE_CONF
                        Define core configuration, overwriting global.conf
                        values. E.g.: -cc core:non_interactive=True
  --file [FILE]         Files to be merged
  --reduce              Reduce the build order, output only those to build.
                        Use this only if the result will not be merged later
                        with other build-order

conan graph build-order 命令所述,存在 2 种类型的顺序:recipeconfiguration。只有相同类型的构建顺序才能合并在一起,否则命令将返回错误。

请注意,只有未通过 --reduce 缩减的构建顺序才能合并。

合并不同输入文件的结果也可以通过 conan graph build-order-merge --reduce 参数进行缩减,其行为与之前相同,只保留需要从源代码构建的元素。

当合并 2 个或更多“build-order”文件时,合并结果将包含一个 profiles 部分,如下所示:

"profiles": {
    "build_order_win": {
        "args": "-pr:h=\"profile1\" -s:h=\"os=Windows\" ..."
    },
    "build_order_nix": {
        "args": "-pr:h=\"profile2\" -s:h=\"os=Linux\" ..."
    }
}

其中 build_order_winbuild_order_nix 是用作合并输入的“build-order”文件名,它们将在构建顺序中每个 packagefilenames 字段中引用。这样,在构建多个配置时,更容易获得构建特定包二进制文件所需的命令行参数。

请注意,当合并的构建顺序包含多个 filenames 时,如下所示:

{
    "package_id": "efa83b160a55b033c4ea706ddb980cd708e3ba1b",
    "context": "build",
    "binary": "Build",
    "filenames": [
        "build_order_win",
        "build_order_nix"
    ],
    "build_args": "--tool-requires=dep/0.1 --build=dep/0.1",
    "info": {
        "settings": {
            "build_type": "Release"
        }
    }
}

"profiles": {
    "build_order_win": {
        "args": "-pr:h=\"profile1\" -s:h=\"os=Windows\" ..."
    },
    "build_order_nix": {
        "args": "-pr:h=\"profile2\" -s:h=\"os=Linux\" ..."
    }
}

那么,将要使用的 filename 是第一个,在本例中是 build_order_win,因为 contextbuild_args 参数匹配此配置文件信息。其他文件名作为参考,指明了在哪个其他单独的构建顺序文件中,此 package_id 被列为需要构建。