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-rw-r--r--src/test/run-make-fulldeps/target-cpu-native/Makefile19
1 files changed, 17 insertions, 2 deletions
diff --git a/src/test/run-make-fulldeps/target-cpu-native/Makefile b/src/test/run-make-fulldeps/target-cpu-native/Makefile
index 0c9d93ecb2a..fee41461612 100644
--- a/src/test/run-make-fulldeps/target-cpu-native/Makefile
+++ b/src/test/run-make-fulldeps/target-cpu-native/Makefile
@@ -1,5 +1,20 @@
 -include ../tools.mk
 
-all:
-	$(RUSTC) foo.rs -C target-cpu=native
+# I *really* don't want to deal with a cross-platform way to compare file sizes,
+# tests in `make` sort of are awful
+ifeq ($(TARGET),x86_64-unknown-linux-gnu)
+all: $(TMPDIR)/out.log
+	# Make sure no warnings about "unknown CPU `native`" were emitted
+	if [ "$$(wc -c $(TMPDIR)/out.log | cut -d' ' -f 1)" = "0" ]; then \
+	  echo no warnings generated; \
+	else \
+	  exit 1; \
+	fi
+else
+all: $(TMPDIR)/out.log
+endif
+
+
+$(TMPDIR)/out.log:
+	$(RUSTC) foo.rs -C target-cpu=native 2>&1 | tee $(TMPDIR)/out.log
 	$(call RUN,foo)