[PATCH 3/4] Documentation/kdbus: support quiet builds

[David Herrmann]

Add support for quiet builds, just like Documentation/DocBook/Makefile
supports.

Signed-off-by: David Herrmann <dh.herrmann@xxxxxxxxx>
---
 Documentation/kdbus/Makefile | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/Documentation/kdbus/Makefile b/Documentation/kdbus/Makefile
index d8e6bf3..af87641 100644
--- a/Documentation/kdbus/Makefile
+++ b/Documentation/kdbus/Makefile
@@ -15,13 +15,23 @@ XMLFILES := $(addprefix $(obj)/,$(DOCS))
 MANFILES := $(patsubst %.xml, %.7, $(XMLFILES))
 HTMLFILES := $(patsubst %.xml, %.html, $(XMLFILES))
 
-XMLTO_ARGS := -m $(srctree)/$(src)/stylesheet.xsl
+XMLTO_ARGS := -m $(srctree)/$(src)/stylesheet.xsl --skip-validation
 
+quiet_cmd_db2man = MAN     $@
+      cmd_db2man = xmlto man $(XMLTO_ARGS) -o $(obj) $<
 %.7: %.xml
-	xmlto man $(XMLTO_ARGS) -o $(obj) $<
+	@(which xmlto > /dev/null 2>&1) || \
+	 (echo "*** You need to install xmlto ***"; \
+	  exit 1)
+	$(call cmd,db2man)
 
+quiet_cmd_db2html = HTML    $@
+      cmd_db2html = xmlto html-nochunks $(XMLTO_ARGS) -o $(obj) $<
 %.html: %.xml
-	xmlto html-nochunks $(XMLTO_ARGS) -o $(obj) $<
+	@(which xmlto > /dev/null 2>&1) || \
+	 (echo "*** You need to install xmlto ***"; \
+	  exit 1)
+	$(call cmd,db2html)
 
 mandocs: $(MANFILES)
 
-- 
2.3.2

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