[PATCH] libtraceevent: Fix dependencies in Documentation Makefile

[PATCH] libtraceevent: Fix dependencies in Documentation Makefile

[Steven Rostedt]

From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>

Modify the Documentation Makefile to only rebuild the man pages when their
source has been modified.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
 Documentation/Makefile | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 21bcd5e..ede2930 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -11,7 +11,7 @@ MAN3_TXT= \
 MAN_TXT = $(MAN3_TXT)
 _MAN_XML=$(patsubst %.txt,%.xml,$(MAN_TXT))
 _MAN_HTML=$(patsubst %.txt,%.html,$(MAN_TXT))
-_DOC_MAN3=$(patsubst %.txt,%.3,$(MAN3_TXT))
+_DOC_MAN3=$(patsubst %.txt,%.m,$(MAN3_TXT))
 
 MAN_XML=$(addprefix $(OUTPUT),$(_MAN_XML))
 MAN_HTML=$(addprefix $(OUTPUT),$(_MAN_HTML))
@@ -154,17 +154,22 @@ ifdef missing_tools
 	$(error "You need to install $(missing_tools) for man pages")
 endif
 
-do-install-man: man
+install-%.3: $(OUTPUT)%.3
 	$(call QUIET_INSTALL, Documentation-man) \
 		$(INSTALL) -d -m 755 $(DESTDIR)$(man3dir); \
-		$(INSTALL) -m 644 $(OUTPUT)*.3 $(DESTDIR)$(man3dir);
+		$(INSTALL) -m 644 $< $(DESTDIR)$(man3dir);
 
-install-man: check-man-tools man do-install-man
+do-install-man: man $(addprefix install-,$(wildcard $(OUTPUT)*.3))
 
-do-install-html: html
+install-man: check-man-tools man
+	$(Q)$(MAKE) -C . do-install-man
+
+install-%.txt: $(OUTPUT)%.html
 	$(call QUIET_INSTALL, Documentation-html) \
 		$(INSTALL) -d -m 755 $(DESTDIR)$(htmldir); \
-		$(INSTALL) -m 644 $(OUTPUT)*.html $(DESTDIR)$(htmldir);
+		$(INSTALL) -m 644 $< $(DESTDIR)$(htmldir);
+
+do-install-html: html $(addprefix install-,$(wildcard *.txt))
 
 install-html: check-man-tools html do-install-html
 
@@ -187,7 +192,7 @@ endif
 CLEAN_FILES =					\
 	$(MAN_XML) $(addsuffix +,$(MAN_XML))	\
 	$(MAN_HTML) $(addsuffix +,$(MAN_HTML))	\
-	$(DOC_MAN3) *.3
+	$(DOC_MAN3) *.3 *.m
 
 clean:
 	$(call QUIET_CLEAN, Documentation) $(RM) $(CLEAN_FILES)
@@ -200,9 +205,10 @@ $(OUTPUT)%.3 : $(OUTPUT)%.txt
 	mv $@+ $@
 endif
 
-$(OUTPUT)%.3 : $(OUTPUT)%.xml
+$(OUTPUT)%.m : $(OUTPUT)%.xml
 	$(QUIET_XMLTO)$(RM) $@ && \
-	$(XMLTO) -o $(OUTPUT). -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<
+	$(XMLTO) -o $(OUTPUT). -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $<; \
+	touch $@
 
 $(OUTPUT)%.xml : %.txt
 	$(QUIET_ASCIIDOC)$(RM) $@+ $@ && \
-- 
2.29.2