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ref-manual/faq: Add entry for why binaries are changed in images

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(From yocto-docs rev: 33915ef51d0661c4dc76c572456a10a54fba960b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 843a91187783b2e11512c45b8dd8302b19113569)
Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Richard Purdie
2020-10-28 11:29:10 +00:00
parent b591dcd33e
commit bc491d6956
1 changed files with 11 additions and 0 deletions
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documentation/ref-manual/faq.rst
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@@ -451,3 +451,14 @@ variant. For another example, permissions errors might be caused by a
Makefile that ignores ``DESTDIR`` or uses a different name for that
environment variable. Check the the build system to see if these kinds
of issues exist.
**Q:** I'm adding a binary in a recipe but it's different in the image, what is
changing it?
**A:** The first most obvious change is the system stripping debug symbols from
it. Setting :term:`INHIBIT_PACKAGE_STRIP` to stop debug symbols being stripped and/or
:term:`INHIBIT_PACKAGE_DEBUG_SPLIT` to stop debug symbols being split into a separate
file will ensure the binary is unchanged. The other less obvious thing that can
happen is prelinking of the image. This is set by default in local.conf via
:term:`USER_CLASSES` which can contain 'image-prelink'. If you remove that, the
image will not be prelinked meaning the binaries would be unchanged.