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Support of musl C library #208

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Support of musl C library #208

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@clemdiep clemdiep commented Oct 9, 2025

This add support for the full musl library with standard toolchains.

For now, this PR is a draft until it's fully working and tested.

@clemdiep clemdiep linked an issue Oct 9, 2025 that may be closed by this pull request
feat: support musl #144
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jmi-reds
jmi-reds requested changes Oct 9, 2025
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.github/workflows/style.yml Outdated
branches: ["main"]
pull_request:
branches: ["main"]
branches: ["main", "144-support-musl"]
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@jmi-reds jmi-reds Oct 9, 2025

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Reminder to remove this change before merging

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@clemdiep clemdiep Jan 14, 2026

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done

clemdiep
clemdiep commented Oct 30, 2025
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jmi-reds and others added 27 commits January 14, 2026 14:18
@jmi-reds @clemdiep
Add 'writev' syscall
c3012f4 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
writev - Fix error in error case
623f054 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
Add 'readv' syscall
b1bbc34 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[syscall] Update readv & writev from comments in MR #207
53669db 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[syscall] readv & writev clean-up - MR #207
8026825 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
Run format checking for branch 144-support-musl
2c2dc86 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[syscall] mmap: Add support for ANONYMOUS flag
c148c6d 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[syscall] mmap: Define USER_ANONYMOUS_VADDR for 39bits case
e9d8ded 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[syscall] mmap: Define USER_ANONYMOUS_VADDR for arm32b
d8363ba 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@clemdiep
change syscall number to correct ones
ab69437
@clemdiep
rename sbrk to brk
602d48d
@clemdiep
add dup3 simple implementation
6f8b84d
@clemdiep
implement time32 version for clock_gettime and gettimeofday
45898ea
@clemdiep
wait4 and getdents
7a77075
@clemdiep
add mmap2 and openat
c723d93
@clemdiep
remove support for sysinfo
4954027
@clemdiep
add pipe2
f459bcd
@clemdiep
add rt_sig, fstatat and correct syscall table
16c1ea7
@clemdiep
correction after rebase
07180e7
@clemdiep
remove unwanted comment in syscall_number
25464ac
@clemdiep
correct syscall arguments and numbers
a2290e2
@clemdiep
cleanups
34badab
@clemdiep
rename llseek to _llseek
289e04f
@clemdiep
autogenerate syscall table
ead0434
@clemdiep
fix sh to bash in script
847ce4b
@clemdiep
rework thread creation to match pthread
caad894
@clemdiep
fix style and missing comments
09e4eaf
jmi-reds and others added 27 commits January 14, 2026 14:18
@jmi-reds @clemdiep
update CI with MUSL toolchains
d58580b 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
Generate updated Docker - needed to get MUSL toolchain
f7a7317 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[CI] Test
57cd9ae 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[ci] Add test branch
0407601 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[ci] new test with added musl toolchain
d7fb6a5 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[CI] Add new docker image to build toolchains
465e9c5 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[CI] Add tags for docker toolchains image
73ef01d 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[ci] Dockerfile.env update for ubuntu 24.04
2e0c876 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[CI] Add toolchains dependency for usr build
3b213f4 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[CI] Fix issue with lvgl 32 docker image
d0ded74 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[CI] Fix bug in lvgl 32b docker image
b60b1f5 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[CI] Fix bug in lvgl 32b docker image (again)
5f9f05f 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[ci] Some fixes
06444bb 
* Add tag for docker images
* Remove build of musl toolchains in lvgl 64b
* Use the new docker images for build workflows

Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
Add missing <sys/ioctl.h> header file
80b1d2e 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[musl] remove the original so3 libc src
4ad9292 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[musl] remove old cmake toolchain files
7dd8122 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@jmi-reds @clemdiep
[musl] small fixes based on review
365ba6e 
Signed-off-by: Jean-Pierre Miceli <jean-pierre.miceli@heig-vd.ch>
@clemdiep
fixes to correct bug introduced by the MUSL support
f9f45b2
@clemdiep
rename rt_kill into kill in syscall.tbl
f867f79
@clemdiep
rename thread_yield to sched_yield
b1a52dd
@clemdiep
add missing fix on process
7f2ab96
@clemdiep
fix for userspace threads
99d5216
@clemdiep
add mising copyright
dabbc12
@clemdiep
allow for syscall with empty implementation to hide warning message
8bb2c14
@clemdiep
fix bug on arm32 after musl support
53c7fdf
@clemdiep
fix nanosleep and futex
2dc0b62
@clemdiep
revert no more necessary branch condition in workflows
d67443a
@clemdiep clemdiep marked this pull request as ready for review January 14, 2026 13:28
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@jmi-reds jmi-reds jmi-reds requested changes

@daniel-rossier daniel-rossier Awaiting requested review from daniel-rossier

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feat: support musl

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@clemdiep @jmi-reds