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-rw-r--r--lib/std/Build/Step/InstallFile.zig5
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/std/Build/Step/InstallFile.zig b/lib/std/Build/Step/InstallFile.zig
index dd6aa2d1c4..f68e6e8aa0 100644
--- a/lib/std/Build/Step/InstallFile.zig
+++ b/lib/std/Build/Step/InstallFile.zig
@@ -39,7 +39,10 @@ fn make(step: *Step, prog_node: std.Progress.Node) !void {
_ = prog_node;
const b = step.owner;
const install_file: *InstallFile = @fieldParentPtr("step", step);
- step.addWatchInput(install_file.source);
+
+ // Inputs never change when re-running `make`.
+ if (!step.inputs.populated()) step.addWatchInput(install_file.source);
+
const full_src_path = install_file.source.getPath2(b, step);
const full_dest_path = b.getInstallPath(install_file.dir, install_file.dest_rel_path);
const cwd = std.fs.cwd();