core: add build option to disable sentry

src/build_config.zig

@@ -23,6 +23,7 @@ pub const BuildConfig = struct {
     flatpak: bool = false,
     adwaita: bool = false,
     x11: bool = false,
+    sentry: bool = true,
     app_runtime: apprt.Runtime = .none,
     renderer: rendererpkg.Impl = .opengl,
     font_backend: font.Backend = .freetype,
@@ -43,6 +44,7 @@ pub const BuildConfig = struct {
         step.addOption(bool, "flatpak", self.flatpak);
         step.addOption(bool, "adwaita", self.adwaita);
         step.addOption(bool, "x11", self.x11);
+        step.addOption(bool, "sentry", self.sentry);
         step.addOption(apprt.Runtime, "app_runtime", self.app_runtime);
         step.addOption(font.Backend, "font_backend", self.font_backend);
         step.addOption(rendererpkg.Impl, "renderer", self.renderer);

src/crash/sentry.zig

@@ -3,7 +3,8 @@ const assert = std.debug.assert;
 const Allocator = std.mem.Allocator;
 const builtin = @import("builtin");
 const build_config = @import("../build_config.zig");
-const sentry = @import("sentry");
+const build_options = @import("build_options");
+const sentry = if (build_options.sentry) @import("sentry");
 const internal_os = @import("../os/main.zig");
 const crash = @import("main.zig");
 const state = &@import("../global.zig").state;
@@ -47,6 +48,8 @@ pub threadlocal var thread_state: ?ThreadState = null;
 /// It is up to the user to grab the logs and manually send them to us
 /// (or they own Sentry instance) if they want to.
 pub fn init(gpa: Allocator) !void {
+    if (comptime !build_options.sentry) return;
+
     // Not supported on Windows currently, doesn't build.
     if (comptime builtin.os.tag == .windows) return;
 
@@ -76,6 +79,8 @@ pub fn init(gpa: Allocator) !void {
 }
 
 fn initThread(gpa: Allocator) !void {
+    if (comptime !build_options.sentry) return;
+
     var arena = std.heap.ArenaAllocator.init(gpa);
     defer arena.deinit();
     const alloc = arena.allocator();
@@ -145,6 +150,8 @@ fn initThread(gpa: Allocator) !void {
 /// Process-wide deinitialization of our Sentry client. This ensures all
 /// our data is flushed.
 pub fn deinit() void {
+    if (comptime !build_options.sentry) return;
+
     if (comptime builtin.os.tag == .windows) return;
 
     // If we're still initializing then wait for init to finish. This