contrib/subtree/Makefile: clean up rules to generate documentation

diff --git a/contrib/subtree/Makefile b/contrib/subtree/Makefile
index 87797edeb30309533ddb3ed2ce6bbfdb1d12fe18..f3834b5bd6ebb91a611cf7a9f6ad8d8ccfe0cb58 100644 (file)
--- a/contrib/subtree/Makefile
+++ b/contrib/subtree/Makefile
@@ -3,16 +3,22 @@
 
 prefix ?= /usr/local
 mandir ?= $(prefix)/share/man
-libexecdir ?= $(prefix)/libexec/git-core
+gitexecdir ?= $(prefix)/libexec/git-core
 man1dir ?= $(mandir)/man1
 
-gitver ?= $(word 3,$(shell git --version))
+../../GIT-VERSION-FILE: FORCE
+       $(MAKE) -C ../../ GIT-VERSION-FILE
+
+-include ../../GIT-VERSION-FILE
 
 # this should be set to a 'standard' bsd-type install program
 INSTALL ?= install
 
-ASCIIDOC_CONF      = ../../Documentation/asciidoc.conf
-MANPAGE_NORMAL_XSL =  ../../Documentation/manpage-normal.xsl
+ASCIIDOC = asciidoc
+XMLTO    = xmlto
+
+ASCIIDOC_CONF = ../../Documentation/asciidoc.conf
+MANPAGE_XSL   = ../../Documentation/manpage-normal.xsl
 
 GIT_SUBTREE_SH := git-subtree.sh
 GIT_SUBTREE    := git-subtree
@@ -30,8 +36,8 @@ $(GIT_SUBTREE): $(GIT_SUBTREE_SH)
 doc: $(GIT_SUBTREE_DOC) $(GIT_SUBTREE_HTML)
 
 install: $(GIT_SUBTREE)
-       $(INSTALL) -d -m 755 $(DESTDIR)$(libexecdir)
-       $(INSTALL) -m 755 $(GIT_SUBTREE) $(DESTDIR)$(libexecdir)
+       $(INSTALL) -d -m 755 $(DESTDIR)$(gitexecdir)
+       $(INSTALL) -m 755 $(GIT_SUBTREE) $(DESTDIR)$(gitexecdir)
 
 install-doc: install-man
 
@@ -40,15 +46,15 @@ install-man: $(GIT_SUBTREE_DOC)
        $(INSTALL) -m 644 $^ $(DESTDIR)$(man1dir)
 
 $(GIT_SUBTREE_DOC): $(GIT_SUBTREE_XML)
-       xmlto -m $(MANPAGE_NORMAL_XSL)  man $^
+       $(XMLTO) -m $(MANPAGE_XSL) man $^
 
 $(GIT_SUBTREE_XML): $(GIT_SUBTREE_TXT)
-       asciidoc -b docbook -d manpage -f $(ASCIIDOC_CONF) \
-               -agit_version=$(gitver) $^
+       $(ASCIIDOC) -b docbook -d manpage -f $(ASCIIDOC_CONF) \
+               -agit_version=$(GIT_VERSION) $^
 
 $(GIT_SUBTREE_HTML): $(GIT_SUBTREE_TXT)
-       asciidoc -b xhtml11 -d manpage -f $(ASCIIDOC_CONF) \
-               -agit_version=$(gitver) $^
+       $(ASCIIDOC) -b xhtml11 -d manpage -f $(ASCIIDOC_CONF) \
+               -agit_version=$(GIT_VERSION) $^
 
 test:
        $(MAKE) -C t/ test
@@ -56,3 +62,5 @@ test:
 clean:
        rm -f *~ *.xml *.html *.1
        rm -rf subproj mainline
+
+.PHONY: FORCE