compiler.txt: ensure file exists before comparison (#18921)
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@ -332,6 +332,7 @@ $1/asflags.txt: $1/force
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echo '$$($1_ASFLAGS)' | cmp -s - $$@ || echo '$$($1_ASFLAGS)' > $$@
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$1/compiler.txt: $1/force
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test -f $$@ || touch $$@
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$$(CC) --version | cmp -s - $$@ || $$(CC) --version > $$@
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endef
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