fix: SIGSEGV in getauxval — override broken CRT stub with dlsym wrapper

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compiler-rt's init_have_lse_atomics calls getauxval(AT_HWCAP) at
library load time. The static getauxval from the CRT reads from
__libc_auxv which is NULL in shared libraries → SIGSEGV at 0x0.

Fix: compile getauxval_fix.c that provides a getauxval() which uses
dlsym(RTLD_DEFAULT) to find the real bionic getauxval at runtime.
Also switch to libc++_shared.so (bundled in APK) to avoid pulling
in static libc stubs.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

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Claude

2026-04-05 08:39:57 +00:00

parent f6d51fce61

commit 9098e28a1f

4 changed files with 57 additions and 9 deletions

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