add Aro sources as a dependency

ref: 5688dbccfb58216468267a0f46b96bed7013715a

Author: Vexu

.gitattributes

@@ -10,3 +10,4 @@ lib/libcxx/** linguist-vendored
 lib/libcxxabi/** linguist-vendored
 lib/libunwind/** linguist-vendored
 lib/tsan/** linguist-vendored
+deps/** linguist-vendored

CMakeLists.txt

@@ -797,7 +797,8 @@ set(BUILD_ZIG2_ARGS
   -OReleaseSmall
   --name zig2 -femit-bin="${ZIG2_C_SOURCE}"
   --mod "build_options::${ZIG_CONFIG_ZIG_OUT}"
-  --deps build_options
+  --mod "aro::deps/aro/lib.zig"
+  --deps build_options,aro
   -target "${ZIG_HOST_TARGET_TRIPLE}"
 )
 

build.zig

@@ -580,6 +580,9 @@ fn addCompilerStep(
         .optimize = optimize,
     });
     exe.stack_size = stack_size;
+    exe.addAnonymousModule("aro", .{
+        .source_file = .{ .path = "deps/aro/lib.zig" },
+    });
     return exe;
 }