Hi. lscpu output: Architecture: aarch64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 6 On-line CPU(s) list: 0,3-5 Off-line CPU(s) list: 1,2 Vendor ID: ARM Model name: Cortex-A57 Model: 3 Thread(s) per core: 1 Core(s) per cluster: 4 Socket(s): - Cluster(s): 1 Stepping: r1p3 CPU max MHz: 2035,2000 CPU min MHz: 960,0000 BogoMIPS: 62.50 Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid Caches (sum of all): L1d: 128 KiB (4 instances) L1i: 192 KiB (4 instances) L2: 2 MiB (1 instance) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0,3-5 Vulnerabilities: Itlb multihit: Not affected L1tf: Not affected Mds: Not affected Meltdown: Mitigation; PTI Spec store bypass: Not affected Spectre v1: Mitigation; __user pointer sanitization Spectre v2: Mitigation; Branch predictor hardening, BHB Srbds: Not affected Tsx async abort: Not affected ../configure --prefix=/usr --libexecdir=/usr/lib --enable-languages=c,c++,fortran,lto --enable-threads=posix --enable-__cxa_atexit --enable-default-pie --enable-default-ssp --enable-linker-build-id --enable-initfini-array --enable-link-serialization=1 --enable-gnu-indirect-function --enable-plugin --disable-nls --disable-multilib --disable-sjlj-exceptions --disable-libunwind-exceptions --disable-libquadmath-support --disable-libquadmath --with-system-zlib --with-linker-hash-style=gnu --with-build-config=bootstrap-lto --with-pkgversion=SAUX-Aarch64 --build=aarch64-unknown-linux-gnu --host=aarch64-unknown-linux-gnu make profiledbootstrap This is where my question begins. Is there any easy way to avoid tests (sve, sve2, aapcs ....) that are not supported by this cpu? Thanks. Milan --- Remember, no question is too stupid and no problem too small *** We've all been beginners ***