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ELF notes: rework the description of disabling

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I changed the definitions in package-notes to not do anything if
%_package_note_file is undefined. The other macros won't work if it is
not defined anyway, so this is quite natural. With this, undefining
%_package_note_file becomes the most comprehensive mechanism to disable
the feature. (Undefining %_package_note_flags still works so backwards
compat is preserved.)

The new mechanism will work once
https://src.fedoraproject.org/rpms/package-notes/pull-request/1 is merged.
But I don't think it is necessary to add a version requirement here, since
we're only providing the docs here.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2022-01-20 20:31:57 +01:00
parent a87ba4ab1c
commit 38fc865990
1 changed files with 10 additions and 4 deletions
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14
buildflags.md
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@ -254,13 +254,19 @@ generated when `%set_build_flags` is called. The linker option that
injects the linker script is added to `%{build_ldflags}` via the
`%{_package_note_flags}` macro.
To opt out of the use of the linker script, include this in the spec file:
To opt out of the use of this feature completely, the best way is to
undefine the first macro. Include this in the spec file:
%undefine _package_note_flags
%undefine _package_note_file
To opt out of generation of the linker script, include this in the spec file:
The other macros can be undefined too to replace parts of the functionality.
If `%_generate_package_note_file` is undefined, the linker script will not
be generated, but the link flags may still refer to it. This may be useful
if the default generation method is insufficient and a different mechanism
will be used to generate `%_package_note_file`. If `%_package_note_flags`
is undefined, the linker argument that injects the script will not be added
to `%build_ldfags`, but the linker script would still be generated.
%undefine _generate_package_note_file
### Post-build ELF object processing