makotokato

// build:
// gcc gtk3-entry-keyboard-event.c `pkg-config --cflags gtk+-3.0` `pkg-config
// --libs gtk+-3.0`

#include <gtk/gtk.h>

static gboolean print_keypress(GtkWidget *widget, GdkEventKey *event,
                               gpointer user_data) {
  printf("keypress: %#06x %#06x\n", event->keyval, event->hardware_keycode);
  return FALSE;

makotokato

TL;DR

• Actually, we don't support GeckoView build on Apple Sillicon simply yet. Although Rust has native binaries, we have to use some x86_64 tools for clang, OpenJDK and Python 2.7.
• You can use https://github.com/google/android-emulator-m1-preview on macOS. But ./mach install doesn't detect this emulator now.
• GV's unit tests doesn't work yet.

Step

1. Set up development environment via https://bit.ly/36bUmEx
2. Install OpenJDK (macOS x86_64) since it has no aarch64 packages.
3. Add your rust target like aarch64-linux-android via rustup target add aarch64-linux-android
4. Comment out https://searchfox.org/mozilla-central/rev/c8ce16e4299a3afd560320d8d094556f2b5504cd/python/mozboot/mozboot/osx.py#197 like "# sys.exit(1)"

makotokato

// gcc main.c `pkg-config --cflags --libs gtk4`                                                                                                                                                                                            Too many errors emitted, stopping now
  
#include <gtk/gtk.h>                                                                                                                                                                                                                       'gtk/gtk.h' file not found
  
static void activate(GApplication* app, gpointer user_data) {                                                                                                                                                                              Unknown type name 'gpointer'
  GtkWidget* window = gtk_window_new();