contacts: add a Makefile to generate docs and install

Also add a gitignore file for generated files.

Signed-off-by: Sebastian Schuberth <sschuberth@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/contacts/.gitignore

@@ -0,0 +1,3 @@
+git-contacts.1
+git-contacts.html
+git-contacts.xml

contrib/contacts/Makefile

@@ -0,0 +1,71 @@
+# The default target of this Makefile is...
+all::
+
+-include ../../config.mak.autogen
+-include ../../config.mak
+
+prefix ?= /usr/local
+gitexecdir ?= $(prefix)/libexec/git-core
+mandir ?= $(prefix)/share/man
+man1dir ?= $(mandir)/man1
+htmldir ?= $(prefix)/share/doc/git-doc
+
+../../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
+RM       ?= rm -f
+
+ASCIIDOC = asciidoc
+XMLTO    = xmlto
+
+ifndef SHELL_PATH
+	SHELL_PATH = /bin/sh
+endif
+SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
+
+ASCIIDOC_CONF = ../../Documentation/asciidoc.conf
+MANPAGE_XSL   = ../../Documentation/manpage-normal.xsl
+
+GIT_CONTACTS := git-contacts
+
+GIT_CONTACTS_DOC := git-contacts.1
+GIT_CONTACTS_XML := git-contacts.xml
+GIT_CONTACTS_TXT := git-contacts.txt
+GIT_CONTACTS_HTML := git-contacts.html
+
+doc: $(GIT_CONTACTS_DOC) $(GIT_CONTACTS_HTML)
+
+install: $(GIT_CONTACTS)
+	$(INSTALL) -d -m 755 $(DESTDIR)$(gitexecdir)
+	$(INSTALL) -m 755 $(GIT_CONTACTS) $(DESTDIR)$(gitexecdir)
+
+install-doc: install-man install-html
+
+install-man: $(GIT_CONTACTS_DOC)
+	$(INSTALL) -d -m 755 $(DESTDIR)$(man1dir)
+	$(INSTALL) -m 644 $^ $(DESTDIR)$(man1dir)
+
+install-html: $(GIT_CONTACTS_HTML)
+	$(INSTALL) -d -m 755 $(DESTDIR)$(htmldir)
+	$(INSTALL) -m 644 $^ $(DESTDIR)$(htmldir)
+
+$(GIT_CONTACTS_DOC): $(GIT_CONTACTS_XML)
+	$(XMLTO) -m $(MANPAGE_XSL) man $^
+
+$(GIT_CONTACTS_XML): $(GIT_CONTACTS_TXT)
+	$(ASCIIDOC) -b docbook -d manpage -f $(ASCIIDOC_CONF) \
+		-agit_version=$(GIT_VERSION) $^
+
+$(GIT_CONTACTS_HTML): $(GIT_CONTACTS_TXT)
+	$(ASCIIDOC) -b xhtml11 -d manpage -f $(ASCIIDOC_CONF) \
+		-agit_version=$(GIT_VERSION) $^
+
+clean:
+	$(RM) $(GIT_CONTACTS)
+	$(RM) *.xml *.html *.1
+
+.PHONY: FORCE