build: disable discord dependency on unsupported architecture

Author: Totto16

tools/dependencies/meson.build

@@ -336,10 +336,17 @@ if build_application
 
     c = meson.get_compiler('c')
 
+    discord_dep_required = not meson.is_cross_build() and get_option('build_installer')
+
+    if host_machine.system() == 'linux' and host_machine.cpu_family() == 'aarch64'
+        # not supported on aarch64 linux :(
+        discord_dep_required = false
+    endif
+
     discord_sdk_dep = dependency(
         'discord-game-sdk',
         allow_fallback: true,
-        required: not meson.is_cross_build() and get_option('build_installer'),
+        required: discord_dep_required,
         # only with msvc we need a static library, all others work without adding __declspec() everywhere
         static: c.get_id() == 'msvc',
         default_options: c.get_id() != 'msvc' ? {} : {'default_library': 'static'},