Compiling Error: Library not found: /home/src/openwrt/staging_dir/target-aarch64_cortex-a53_musl/root-mediatek/lib/libc.so

Yuking-net · April 15, 2024, 4:37pm

When compiling the last git-version openwrt for GL .iNet MT3000, got the error:

Library not found: /home/src/openwrt/staging_dir/target-aarch64_cortex-a53_musl/root-mediatek/lib/libc.so in p
ath: /lib:/usr/lib:/usr/lib/samba:/usr/lib/samba/ldb:/usr/lib/samba:/usr/lib/samba/vfs:/usr/lib/samba:/usr/lib
/samba/krb5:/usr/lib/samba:/usr/lib:/usr/lib/pppd/2.4.9:/usr/lib:/usr/lib/rpcd:/usr/lib:/usr/lib/ucode:/usr/li
b/ucode/luci:/usr/lib/ucode:/usr/lib

There was no this error a few days ago.
What's wrong with it?

frollic · April 15, 2024, 7:15pm

Library not found ?

hnyman · April 15, 2024, 7:28pm

libc is the main C function lib provided by the musl C lib.
It should always be found as the basic foundation of compilation.

I guess that the reason is that musl was upgraded to version 1.25 yesterday

github.com/openwrt/openwrt

toolchain/musl: Update to 1.2.5

committed 03:38PM - 14 Apr 24 UTC

hnyman

+3 -3

Update musl C library to 1.2.5 This release adds extension functions statx and …preadv2/pwritev2, with fallback implementations for older kernels, and adds two new ports: loongarch64 and riscv32. Minor changes to the printf family of functions have been made for conformance to new standards interpretations/requirements. TLSDESC support for riscv64 has also been added. Bugs fixed include some DNS issues related to new TCP fallback functionality, several rare race conditions, potentially incorrect return value when glob aborts, and several signifiant arch-specific bugs affecting TLSDESC on arm, riscv64 icache flushing, and sh sigsetjmp and dlsym RTLD_NEXT. 1.2.5 release notes: new features: - statx function (linux extension; via syscall and fallback using fstatat) - clone function is now usable and gives _Fork-like consistency in child - statvfs now provides f_type result - preadv2 and pwritev2 (linux extension) syscall wrappers - riscv64 TLSDESC support new ports: - loongarch64 - riscv32 compatibility: - DNS resolver can now handle answers with long CNAME chains - string.h no longer provides (C23-incompat) non-prototype decl of basename - fstatat statx backend now matches stat syscall non-automounting behavior - mntent interfaces now handle escaped whitespace in paths/options standards updates: - printf %lc of nul wchar now produces output - snprintf and swprintf no longer fail on n > INT_MAX - ppoll is now exposed in default feature profile bugs fixed: - some long DNS answers were wrongly rejected despite new TCP support - glob could wrongly return GLOB_NOMATCH if aborted before any matches - multithreaded set*id could malfunction from thread sequencing logic bug - certain use of threads after fork could deadlock thread-list lock - posix_spawn child could deadlock in race with async parent death - mbrtowc return value was wrong if argument n exceeded UINT_MAX - 80-bit extended acoshl and powl got some corner cases wrong - syslog incorrectly generated localized timestamps arch-specific bugs fixed: - arm (32-bit) TLSDESC malfunctioned due to addends being processed wrong - riscv64 icache flush operation was non-functional - sh sigsetjmp failed to properly restore call-saved register r8 on return - sh dlsym RTLD_NEXT did not identify calling module correctly Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi> [Removed patch adding basename hack again] Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

If you have not yet fully cleaned and rebuilt your toolchain, you may have slightly incompatible packages or inconsistency errors.
I recommend that after updating git sources you clear the normal target firmware build artefacts (=make clean) and also the toolchain with "make targetclean" (or even wider "make dirclean").

https://openwrt.org/docs/guide-developer/toolchain/use-buildsystem#cleaning_up

Yuking-net · April 16, 2024, 1:50pm

I have built it from pure clean source codes, and tried it with a new laptop, but the error still exists. musl compiled correctly, and the libc.so was in /home/src/openwrt/staging_dir/target-aarch64_cortex-a53_musl/root-mediatek/lib/. It seems the error message is a little strange: an absolute path/libc.so in path……？

Yuking-net · April 20, 2024, 5:24pm

The error message:

......
warning: /home/src/openwrt/staging_dir/target-aarch64_cortex-a53_musl/root-mediatek/usr/sbin/nmbd may need rpath, but --root not specified
warning: /home/src/openwrt/staging_dir/target-aarch64_cortex-a53_musl/root-mediatek/usr/sbin/smbd may need rpath, but --root not specified
I: library reduction pass 1
12497 symbols, 18 unresolved
I: library reduction pass 2
12499 symbols, 20 unresolved
Library not found: /home/src/openwrt/staging_dir/target-aarch64_cortex-a53_musl/root-mediatek/lib/libc.so in path: /lib:/usr/lib:/usr/lib/samba:/usr/lib/samba/ldb:/usr/lib/samba:/usr/lib/samba/vfs:/usr/lib/samba:/usr/lib/samba/krb5:/usr/lib/samba:/usr/lib:/usr/lib/pppd/2.4.9:/usr/lib:/usr/lib/rpcd:/usr/lib:/usr/lib/ucode:/usr/lib/ucode/luci:/usr/lib/ucode:/usr/lib
make[2]: *** [package/Makefile:74: package/install] Error 1
make[2]: Leaving directory '/home/src/openwrt'
make[1]: *** [package/Makefile:124: /home/src/openwrt/staging_dir/target-aarch64_cortex-a53_musl/stamp/.package_install] Error 2
make[1]: Leaving directory '/home/src/openwrt'
make: *** [/home/src/openwrt/include/toplevel.mk:233: world] Error 2

orange2moon · April 12, 2025, 12:44pm

I think I found the solution to your problem. Try removing the "Strip unnecessary functions from libraries" from the config, then clean and rebuild (e.g. "make clean && make make -j $(nproc) world".

I had the same problem and I fixed it after viewing this issue on github:

https://github.com/openwrt/openwrt/issues/15666