# Copyright 1999-2023 Gentoo Authors # Distributed under the terms of the GNU General Public License v2 aes - Use the AES cryptography instruction set asimddp - Use the Advanced SIMD dot product instructions crc32 - Use the CRC32 instruction set edsp - Use the enhanced DSP instructions (ARMv*E and ARMv6+) i8mm - Use the AArch64 Int8 matrix multiplication instructions iwmmxt - Use the iwMMXt instruction set iwmmxt2 - Use the iwMMXt2 instruction set neon - Use the NEON (ASIMD) instruction set sha1 - Use the SHA-1 cryptography instruction set sha2 - Use the SHA-2 cryptography instruction set sm4 - Use the SM4 cryptography instruction set sve - Use the Scalable Vector Extension instruction set thumb - Enable Thumb instruction set (ARMv*T and ARMv6+) thumb2 - Enable Thumb-2 instruction set (ARMv*T2 and ARMv7+) v4 - Use instructions added in ARMv4 v5 - Use instructions added in ARMv5 v6 - Use instructions added in ARMv6 v7 - Use instructions added in ARMv7 v8 - Use instructions added in ARMv8 vfp - Use the VFP version 2 instruction set vfpv3 - Use the VFP version 3 instruction set vfpv4 - Use the VFP version 4 instruction set vfp-d32 - Indicate that the FPU has 32 64-bit VFP (v3+) registers (16 otherwise)