[CRIU] [crtools-bot] make: Fix Documentation/Makefile to not rebuild man without change

[Cyrill Gorcunov]

The commit is pushed to "master" and will appear on git://github.com/cyrillos/crtools.git
------>
commit 7a7315d09bf183428fae52cb82adaef9a877ef63
Author: Cyrill Gorcunov <gorcunov at openvz.org>
Date:   Wed Feb 1 15:07:30 2012 +0400

    make: Fix Documentation/Makefile to not rebuild man without change
    
    Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 Documentation/Makefile |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/Documentation/Makefile b/Documentation/Makefile
index d8002e3..46dc502 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -11,14 +11,15 @@ ASCIIDOC	:= asciidoc
 A2X		:= a2x
 XMLTO		:= xmlto
 
-MAN		:= crtools.txt
+SRC		:= crtools.txt
+MANS		:= $(patsubst %.txt,%.1,$(SRC))
 
-all: man
+all: $(MANS)
 
-man: $(MAN)
+%.1: %.txt
 	$(E) "  GEN     " $@
-	$(Q) $(ASCIIDOC) -b docbook -d manpage -o crtools.xml crtools.txt
-	$(Q) $(XMLTO) man --skip-validation crtools.xml 2>/dev/null
+	$(Q) $(ASCIIDOC) -b docbook -d manpage -o $(patsubst %.1,%.xml,$@) $<
+	$(Q) $(XMLTO) man --skip-validation $(patsubst %.1,%.xml,$@) 2>/dev/null
 
 clean:
 	$(E) "  CLEAN   "