mk: fix doxygen clean

RTE_OUTPUT variable is always defined, unlike $O.

Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>

diff --git a/mk/rte.sdkdoc.mk b/mk/rte.sdkdoc.mk
index 8861b05..c6cc673 100644 (file)
--- a/mk/rte.sdkdoc.mk
+++ b/mk/rte.sdkdoc.mk
@@ -64,5 +64,5 @@ htmlapi: htmlapi-clean
 
 .PHONY: htmlapi-clean
 htmlapi-clean:
-       $(Q)rm -f $O/doc/html/api/*
+       $(Q)rm -f $(RTE_OUTPUT)/doc/html/api/*
        $(Q)rmdir -p --ignore-fail-on-non-empty $(RTE_OUTPUT)/doc/html/api 2>&- || true