deps: add option to statically link C dependencies

build.zig

@@ -1,9 +1,15 @@
 const std = @import("std");
 
-pub fn build(b: *std.Build) void {
+pub fn build(b: *std.Build) !void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
+    const static = b.option(
+        bool,
+        "static",
+        "Statically link SDL2 and FreeType. Not supported on Linux.",
+    ) orelse false;
+
     const zenolith_mod = b.dependency("zenolith", .{
         .target = target,
         .optimize = optimize,
@@ -16,8 +22,27 @@ pub fn build(b: *std.Build) void {
         .optimize = optimize,
         .link_libc = true,
     });
-    mod.linkSystemLibrary("SDL2", .{});
-    mod.linkSystemLibrary("freetype2", .{});
+
+    if (static) {
+        if (mod.resolved_target.?.result.os.tag == .linux) {
+            std.debug.print(
+                \\Statically linking SDL2 is not currently possible on Linux targets.
+                \\This is because andrew's SDL fork with the Zig build system doesn't work
+                \\on Linux and is, in fact, not my fault :)
+                \\
+            , .{});
+            return error.StaticLinkingNotSupported;
+        }
+
+        const sdl2_dep = b.dependency("sdl2", .{ .target = target, .optimize = optimize });
+        const freetype_dep = b.dependency("freetype", .{ .target = target, .optimize = optimize });
+
+        mod.linkLibrary(sdl2_dep.artifact("SDL2"));
+        mod.linkLibrary(freetype_dep.artifact("freetype"));
+    } else {
+        mod.linkSystemLibrary("SDL2", .{});
+        mod.linkSystemLibrary("freetype2", .{});
+    }
 
     const main_tests = b.addTest(.{
         .root_source_file = .{ .path = "src/main.zig" },

build.zig.zon

@@ -13,5 +13,14 @@
             .url = "git+https://git.mzte.de/zenolith/zenolith.git#ad388687cd205079aab75074a542eadc79490df7",
             .hash = "12201677a81b6f8133bbe9c7d3b2afc07b61bf632a070d13d57f995827022f6a1f54",
         },
+
+        .sdl2 = .{
+            .url = "git+https://git.mzte.de/mirrors/SDL.git#db4a162db2f6f59f737d03f441455dc9524d5793",
+            .hash = "1220c5360c9c71c215baa41b46ec18d0711059b48416a2b1cf96c7c2d87b2e8e4cf6",
+        },
+        .freetype = .{
+            .url = "https://git.mzte.de/mirrors/freetype.git#398638fd1cb723e478658ea371fe3be1a4dce0ae.tar.gz",
+            .hash = "12208c57b72e3fb5c8d5d3e667e2e21ca1d9e2b6fc3f84182b320f63933f591823da",
+        },
     },
 }

src/Sdl2Platform.zig

@@ -134,7 +134,6 @@ pub fn run(
         );
         if (peep_ret < 0) return error.GetEvents;
 
-        log.debug("got {} events", .{peep_ret});
         const events = ev_buf[0..@intCast(peep_ret)];
 
         // This code is responsible for building one KeyInput event out of consecutive
@@ -317,6 +316,14 @@ pub fn run(
     }
 }
 
+/// Quits a running application by submitting a quit event to the event queue,
+/// making the application exit after all queued events were processed.
+pub fn quit(self: *Sdl2Platform) !void {
+    _ = self; // Pretend this isn't global state.
+    var ev = c.SDL_Event{ .quit = .{ .type = c.SDL_QUIT } };
+    if (c.SDL_PushEvent(&ev) < 0) return error.PushEvent;
+}
+
 pub fn deinit(self: Sdl2Platform) void {
     _ = c.FT_Done_FreeType(self.freetype);
     c.SDL_DestroyRenderer(self.renderer);

src/ffi.zig

@@ -1,5 +1,5 @@
 pub const c = @cImport({
-    @cInclude("SDL.h");
+    @cInclude("SDL2/SDL.h");
     @cInclude("freetype/freetype.h");
 });