[PATCH] perf tools: Fixing in-tree documentation build error

[Robert Richter]

Fixing build error for:

 $ cd tools/perf
 $ make install-doc

The following patch changed handling of the OUTPUT variable:

 79e10cb perf tools: Fix output directory of Documentation/

Now, OUTPUT is unset if the build directory is the current working dir
which is the usual case for kbuild. The xmlto rule could not handle
this. This patch fixes this.

Reported-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Signed-off-by: Robert Richter <robert.richter@xxxxxxxxxxx>
Signed-off-by: Robert Richter <rric@xxxxxxxxxx>
---
 tools/perf/Documentation/Makefile |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/Documentation/Makefile b/tools/perf/Documentation/Makefile
index 1368e88..5a37a7c 100644
--- a/tools/perf/Documentation/Makefile
+++ b/tools/perf/Documentation/Makefile
@@ -271,7 +271,7 @@ $(MAN_HTML): $(OUTPUT)%.html : %.txt
 
 $(OUTPUT)%.1 $(OUTPUT)%.5 $(OUTPUT)%.7 : $(OUTPUT)%.xml
 	$(QUIET_XMLTO)$(RM) $@ && \
-	$(XMLTO) -o $(OUTPUT) -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
+	$(XMLTO) -o $(OUTPUT). -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
 
 $(OUTPUT)%.xml : %.txt
 	$(QUIET_ASCIIDOC)$(RM) $@+ $@ && \
-- 
1.7.7.6

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