Almost all the other tests use '-include', so we'll do too.

Tor Hovland · Tor Hovland · commit 27464fa5016b · 2021-11-07T20:06:22.000+01:00
diff --git a/src/test/run-make/issue-10971-temps-dir/Makefile b/src/test/run-make/issue-10971-temps-dir/Makefile
@@ -1,4 +1,4 @@
-include ../../run-make-fulldeps/tools.mk
+-include ../../run-make-fulldeps/tools.mk
 
 # Regression test for issue #10971
 # Running two invocations in parallel would overwrite each other's temp files.

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-include ../../run-make-fulldeps/tools.mk`
	`1`	`+-include ../../run-make-fulldeps/tools.mk`
`2`	`2`
`3`	`3`	`# Regression test for issue #10971`
`4`	`4`	`# Running two invocations in parallel would overwrite each other's temp files.`