[PATCH 01/10] build: Generate build hash

[Gedare Bloom]

On Wed, Feb 24, 2021 at 6:57 AM Sebastian Huber
<sebastian.huber at embedded-brains.de> wrote:
>
> Update #4265.
> ---
>  wscript | 27 ++++++++++++++++++++++++++-
>  1 file changed, 26 insertions(+), 1 deletion(-)
>
> diff --git a/wscript b/wscript
> index 6626fafb74..83c7c446bb 100755
> --- a/wscript
> +++ b/wscript
> @@ -1359,6 +1359,30 @@ def get_compiler(conf, cp, variant):
>      return value
>
>
> +def _generate_build_hash(conf):
> +    import hashlib
> +    import base64
> +
> +    build_hash = ""
> +    for key in sorted(conf.env):
> +        build_hash = build_hash + key + str(conf.env[key])
> +    for discard in [
> +        conf.env.PREFIX,
> +        conf.bldnode.make_node(conf.env.VARIANT).abspath(),
> +        conf.path.abspath(),
> +    ]:
> +        build_hash = build_hash.replace(discard, "")
> +    state = hashlib.sha256()
> +    state.update(build_hash.encode("utf-8"))
> +    conf.define(
> +        "RTEMS_BUILD_HASH",
> +        base64.urlsafe_b64encode(state.digest()).decode("utf-8"),
> +    )
> +    conf.write_config_header(
> +        conf.env.VARIANT + "/cpukit/include/rtems/build-hash.h"

Is this injecting a file in the source tree?

> +    )
> +
> +
>  def configure_variant(conf, cp, bsp_map, path_list, top_group, variant):
>      conf.msg("Configure board support package (BSP)", variant, color="YELLOW")
>
> @@ -1391,9 +1415,10 @@ def configure_variant(conf, cp, bsp_map, path_list, top_group, variant):
>          conf.fatal("No such base BSP: '{}'".format(variant))
>      bsp_item.configure(conf, cic)
>
> -    options = set([o[0].upper() for o in cp.items(variant)])
> +    options = set(o[0].upper() for o in cp.items(variant))
>      for o in options.difference(cic.options):
>          conf.msg("Unknown configuration option", o.upper(), color="RED")
> +    _generate_build_hash(conf)
>
>
>  def check_forbidden_options(ctx, opts):
> --
> 2.26.2
>
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