main/hylafax: build fix aarch64

main/hylafax/APKBUILD

@@ -16,13 +16,15 @@ source="ftp://ftp.hylafax.org/source/$pkgname-$pkgver.tar.gz
 	$pkgname.initd
 	$pkgname.confd"
 
-_builddir="$srcdir"/$pkgname-$pkgver
+builddir="$srcdir"/$pkgname-$pkgver
+
 prepare() {
-        cd "$_builddir"
+	default_prepare || return 1
+        update_config_guess || return 1
 }
 
 build() {
-	cd "$_builddir"
+	cd "$builddir"
 	# the configure script does not handle ccache or distcc
 	export CC=gcc
 	export CXX=g++
@@ -50,7 +52,7 @@ build() {
 }
 
 package(){
-	cd "$_builddir"
+	cd "$builddir"
 	# this makefile has issues installing, it doesn't use the standard
 	#   install - but the following seems to work
 	mkdir -p "${pkgdir}"/usr/bin "${pkgdir}"/usr/sbin