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picolibc: Disable LTO while building picolibc bits

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The compiler requires that much of the C library be built without using LTO
so that various symbols are available for use by generated code, including
things like memset and memcpy.

Add -fno-lto when building both picolibc itself as well as the Zephyr
interface bits.

Closes: #81674

Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard 2024-12-17 14:47:01 -08:00 committed by Benjamin Cabé
parent f786ecc075
commit 7962dcb288
2 changed files with 3 additions and 1 deletions
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2
lib/libc/picolibc/CMakeLists.txt
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@ -11,6 +11,8 @@ zephyr_library_sources(
stdio.c stdio.c
) )
zephyr_library_compile_options(-fno-lto)
# define __LINUX_ERRNO_EXTENSIONS__ so we get errno defines like -ESHUTDOWN # define __LINUX_ERRNO_EXTENSIONS__ so we get errno defines like -ESHUTDOWN
# used by the network stack # used by the network stack
zephyr_compile_definitions(__LINUX_ERRNO_EXTENSIONS__) zephyr_compile_definitions(__LINUX_ERRNO_EXTENSIONS__)

2
west.yml
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@ -333,7 +333,7 @@ manifest:
- debug - debug
- name: picolibc - name: picolibc
path: modules/lib/picolibc path: modules/lib/picolibc
revision: d492d5fa7c96918e37653f303028346bb0dd51a2 revision: 82d62ed1ac55b4e34a12d0390aced2dc9af13fc9
- name: segger - name: segger
revision: cf56b1d9c80f81a26e2ac5727c9cf177116a4692 revision: cf56b1d9c80f81a26e2ac5727c9cf177116a4692
path: modules/debug/segger path: modules/debug/segger