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zephyr: Link MicroPython with the Zephyr kernel library.

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Unlike most other Zephyr libraries, libkernel.a is not built as a
whole-archive.

This change also fixes a linker error observed on nucleo_wb55rg while
preparing an upgrade to Zephyr v3.5.0, caused by an undefined reference to
`z_impl_k_busy_wait`.

Signed-off-by: Maureen Helm <maureen.helm@analog.com>
This commit is contained in:
Maureen Helm 2024-01-02 14:21:37 -06:00 committed by Damien George
parent c211c05291
commit 2b0e64beaf
2 changed files with 1 additions and 4 deletions
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1
ports/zephyr/CMakeLists.txt
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@ -109,6 +109,7 @@ zephyr_library_compile_definitions(
) )
zephyr_library_sources(${MICROPY_SOURCE_QSTR}) zephyr_library_sources(${MICROPY_SOURCE_QSTR})
zephyr_library_link_libraries(kernel)
add_dependencies(${MICROPY_TARGET} zephyr_generated_headers) add_dependencies(${MICROPY_TARGET} zephyr_generated_headers)

4
ports/zephyr/src/zephyr_start.c
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@ -36,8 +36,4 @@ void main(void) {
zephyr_getchar_init(); zephyr_getchar_init();
#endif #endif
real_main(); real_main();
// This is needed so the linker includes k_timer_init, z_impl_k_timer_start
// and z_impl_k_timer_stop, as used by libmicropython.a.
k_timer_start(NULL, K_MSEC(0), K_MSEC(0));
} }