xmake: Update to 2.9.9 and enable aarch64 builds

mingw-w64-xmake/PKGBUILD

@@ -3,11 +3,11 @@
 _realname=xmake
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
-pkgver=2.9.8
+pkgver=2.9.9
 pkgrel=1
 pkgdesc="A cross-platform build utility based on Lua (mingw-w64)"
 arch=('any')
-mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64')
+mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clangarm64')
 msys2_references=(
   'archlinux: xmake'
 )
@@ -18,7 +18,7 @@ depends=("${MINGW_PACKAGE_PREFIX}-ncurses"
          "${MINGW_PACKAGE_PREFIX}-readline")
 makedepends=("${MINGW_PACKAGE_PREFIX}-cc")
 source=("https://github.com/xmake-io/${_realname}/releases/download/v${pkgver}/${_realname}-v${pkgver}.tar.gz")
-sha256sums=('e797636aadf072c9b0851dba39b121e93c739d12d78398c91f12e8ed355d6a95')
+sha256sums=('e92505b83bc9776286eae719d58bcea7ff2577afe12cb5ccb279c81e7dbc702d')
 
 prepare() {
     # Workaround: tarception
@@ -27,6 +27,11 @@ prepare() {
 
 build() {
     cd "${_realname}-${pkgver}"
+
+    if [[ ${CARCH} == aarch64 ]]; then
+        export CFLAGS+=" -D_M_ARM64"
+    fi
+
     ./configure --prefix="${MINGW_PREFIX}" --toolchain=${CC}
     make
 }