gpu-dawn: add NO_ENSURE_SUBMODULES=true env var for development

If you're working on changes to source files in `gpu-dawn/libs/dawn/`, it's annoying to have the build system constantly reset your revision to the desired one. `NO_ENSURE_SUBMODULES=true` will now disable this behavior. Helps #86 Signed-off-by: Stephen Gutekanst <[email protected]>
hexops · Feb 20, 2022 · f5332b2 · f5332b2
1 parent cfc3efb
commit f5332b2
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/gpu-dawn/build.zig b/gpu-dawn/build.zig
@@ -177,6 +177,9 @@ fn linkFromSource(b: *Builder, step: *std.build.LibExeObjStep, options: Options)
 }
 
 fn ensureSubmodules(allocator: std.mem.Allocator) !void {
+    if (std.process.getEnvVarOwned(allocator, "NO_ENSURE_SUBMODULES")) |no_ensure_submodules| {
+        if (std.mem.eql(u8, no_ensure_submodules, "true")) return;
+    } else |_| {}
     const child = try std.ChildProcess.init(&.{ "git", "submodule", "update", "--init", "--recursive" }, allocator);
     child.cwd = thisDir();
     child.stderr = std.io.getStdErr();