Question - I can not figure out how to reference exported files from other repos.

[tenspd137]

I am trying to make a repo that contains data files to be used across projects. For example:

genrule(
    name = "copy_data_files",
    srcs = ["@my_resource_repo//doxygen:resources/doxygen/header.html"],
    outs = ["header.html"],
    cmd = "cp $(SRCS) $(OUTS)"
)

doxygen(
    name = "doxygen_test",
    srcs = glob([
        "*.h",
        "*.cpp",
    ], allow_empty = True,),
    aliases = [
        "licence=@par Licence:^^",
        "verb{1}=@verbatim \\1 @endverbatim",
    ],
    project_brief = "Example project for doxygen",
    project_name = "example",
    recursive = True,
    input = "src",
    tags = ["manual"],
    html_header = "@my_resource_repo//doxygen:resources/doxygen/header.html"
)

So - I know I can find the file - header.html ends up in bazel-bin. What I can't figure out is how I get ""@my_resource_repo//doxygen:resources/doxygen/header.html" to resolve to the actual file for doxygen to use in the doxygen rules.

Is this supported?

[TendTo]

Hi, I'm not totally sure I understand what you wanted to achieve, so I will lay down a couple of options. Feel free to correct me if I'm wrong.

If your goal is to generate some files somewhere else and then use them as inputs in the doxygen rule, you can simply add the genrules as sources and then use a make_var_substitution toolchain to perform the substitution and tell the doxygen rule where the newly created file is.

If your goal is to use the files generated by doxygen in another rule, you can just add the doxygen rule itself as a dependency or source. Note that I was not able to tell bazel exactly which files doxygen will generate, the best I could do is to indicate the folder containing doxygen's output.

I have updated the substitutions example so that it includes both operations. More specifically, have a look at the BUILD.bazel and make_var_substitution.bzl files. Let me know if this is what you wanted or if anything is not clear.

[oxidase]

With v2.3.0 you can try to add to doxygen_test

    deps = [
       ":copy_data_files",
    ],