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Open-Source IPA shlibs need to be signed in order to be runnable within
the same process, otherwise they are deemed Closed-Source and run in
another process and communicate over IPC.

The shlib installed on the target should be the same as the one signed
by libcamera during package creation otherwise the signature won't match
the shlib.

Buildroot sanitizes RPATH in a post build process. meson gets rid of
rpath while installing so we don't need to do it manually.

Buildroot may strip symbols, so we need to do the same before signing.

Signing the IPA shlibs is done by the meson install target, so we need
to strip the IPA shlibs, so after the build but before the install,
which a post-build hooks fits the best.

Cc: Quentin Schulz <>
Signed-off-by: Quentin Schulz <>
[ slight rewording of commit log]
Signed-off-by: Yann E. MORIN <>


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Buildroot is a simple, efficient and easy-to-use tool to generate embedded
Linux systems through cross-compilation.

The documentation can be found in docs/manual. You can generate a text
document with 'make manual-text' and read output/docs/manual/manual.text.
Online documentation can be found at

To build and use the buildroot stuff, do the following:

1) run 'make menuconfig'
2) select the target architecture and the packages you wish to compile
3) run 'make'
4) wait while it compiles
5) find the kernel, bootloader, root filesystem, etc. in output/images

You do not need to be root to build or run buildroot.  Have fun!

Buildroot comes with a basic configuration for a number of boards. Run
'make list-defconfigs' to view the list of provided configurations.

Please feed suggestions, bug reports, insults, and bribes back to the
buildroot mailing list:
You can also find us on #buildroot on OFTC IRC.

If you would like to contribute patches, please read


Buildroot, making embedded Linux easy. Note that this is not the official repository, but only a mirror. The official Git repository is at Do not open issues or file pull requests here.







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