community/vectorscan: build with lowest armv8 arch for aarch64

community/vectorscan/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Duncan Bellamy <dunk@denkimushi.com>
 pkgname=vectorscan
 pkgver=5.4.2
-pkgrel=2
+pkgrel=3
 pkgdesc="High-performance regular expression matching library"
 url="https://www.hyperscan.io"
 arch="x86 x86_64 aarch64"  #requires SSSE3 or Neon
@@ -16,6 +16,8 @@ build() {
 	case "${CARCH:-native}" in
 		x86|x86_64)
 			_march="-march=core2" ;;
+		aarch64)
+			_march="-march=armv8-a" ;;
 	esac
 
 	if [ "$CBUILD" != "$CHOST" ]; then