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Check for ARM Cryptography Extension support

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ARM Cryptography Extension is optional and not all ARM CPUs support it.
For example, the CPU in Raspberry Pi 4 does not support it.

Check for `__ARM_FEATURE_CRYPTO` before attempting to use the optional
extension.

`__ARM_FEATURE_CRYPTO` is defined by both clang and gcc when the target
has the cryptography extension.

Fixes #1854.
This commit is contained in:
Gleb Mazovetskiy 2023-01-20 08:15:42 +00:00 • committed by Sean OMeara
parent 0ae09577f6
commit 9c9d1650d1
2 changed files with 8 additions and 1 deletions
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2
node/AES.hpp
View file

@ -24,7 +24,7 @@
#if !defined(ZT_AES_NO_ACCEL) && defined(ZT_ARCH_X64)
#define ZT_AES_AESNI 1
#endif
#if !defined(ZT_AES_NO_ACCEL) && defined(ZT_ARCH_ARM_HAS_NEON)
#if !defined(ZT_AES_NO_ACCEL) && defined(ZT_ARCH_ARM_HAS_NEON) && defined(ZT_ARCH_ARM_HAS_CRYPTO)
#define ZT_AES_NEON 1
#endif