Fix "Illegal instruction (core dumped)": opencode, Cline CLI, Bun and Antigravity CLI for old x86-64 CPUs without SSE4.2/AVX (Core 2 Duo, Pentium Dual-Core, Celeron, Athlon 64, Phenom II) on Linux
linux debian ubuntu x86-64 opencode avx cline javascriptcore bun pentium sse4 legacy-hardware sigill antigravity ai-coding-agent athlon64 old-cpu illegal-instruction core-dumped core2duo
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Updated
Oct 26, 2026 - Shell