[EFR32] Provide a way to build matter examples using a openthread library #21836
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PR #21836: Size comparison from 1845133 to 3c24975 Increases (5 builds for cc13x2_26x2, efr32, esp32)
Decreases (6 builds for bl602, cc13x2_26x2, nrfconnect, telink)
Full report (41 builds for bl602, cc13x2_26x2, cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, p6, telink)
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…orms. Add new ot support to all efr32 examples
…r ot-efr32 (temporary)
…be set. Change efr32 build system with those changes
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PR #21836: Size comparison from 6322b8d to 0d180e9 Increases (10 builds for cc13x2_26x2, efr32, k32w, nrfconnect, telink)
Decreases (3 builds for cc13x2_26x2, cyw30739, nrfconnect)
Full report (43 builds for bl602, cc13x2_26x2, cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, p6, telink)
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…rary (#21836) * WIP build with ot-lib * WIP compile from lib or source * Fix and cleanup build system * Fix efr32 path to internal thread source without breaking other platforms. Add new ot support to all efr32 examples * restyle * add recursive submodule update for efr to pull the openthread repo for ot-efr32 (temporary) * fix for wifi builds * Fix assert with ot lib * Use plaform dmp lib * Update ot-efr32 hash for new libs * Addresse comment by correcting how and where a openthread_target can be set. Change efr32 build system with those changes * restyle * some cleanup * more cleanup * Fix wifi build
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…read library (project-chip#21836)" This reverts commit 7816a69.
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…rary (project-chip#21836) * WIP build with ot-lib * WIP compile from lib or source * Fix and cleanup build system * Fix efr32 path to internal thread source without breaking other platforms. Add new ot support to all efr32 examples * restyle * add recursive submodule update for efr to pull the openthread repo for ot-efr32 (temporary) * fix for wifi builds * Fix assert with ot lib * Use plaform dmp lib * Update ot-efr32 hash for new libs * Addresse comment by correcting how and where a openthread_target can be set. Change efr32 build system with those changes * restyle * some cleanup * more cleanup * Fix wifi build
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Problem
Currently, EFR32 thread examples are building openthread from sources of openthread and ot-efr32 submodules. Those paths are set.
Change overview
This PR provides a way to either keep building open thread from source or pre-build open thread libraries (aka certified/certifiables libs)
The structure created here can be used by other platforms and also doesn't break/change the current/usual usage
This is the first step and it still uses the ot-efr32 submodule in both cases but it will evolve to use libs from Silabs SDK soon.
How it works:
A new build argument, located in third_party/openthread/BUILD.gn
chip_openthread_target-> Points to your new openthread target source set e.jchip_openthread_target = [ "${efr32_sdk_build_root}:ot-efr32-cert" ].Default = ""New gn group(
openthread_device_deps) in third_party/openthread/BUILD.gn. This is used to set the right public dependencies to thread.If
chip_openthread_targetis left empty, use the current dependencies from the sources. (either${openthread_root}:libopenthread-ftdor${openthread_root}:libopenthread-mtd")else set the public dependency your defined lib/source set located at
chip_openthread_targetThe rest of the changes are EFR32 platform specific to make the build work with either option.
Testing
Standard lighting app build tested with chip-tool.
Build with silabs thread lib using
./scripts/examples/gn_efr32_example.sh examples/lighting-app/efr32/ out/lighting_app BRD4166A --use_ot_lib
And tested with chip-tool
(Current lib is quite large and you might need to disable some feature so the image fits in the flash of some boards enable_openthread_cli=false chip_build_libshell=false )