[PATCH] gitk i18n: Add Makefile with rules for po file creation and installation

The compiled .msg files will be installed into $(sharedir)/gitk/lib/msgs
according to Junio's mailing list proposal on 2007-07-28.
Signed-off-by: NChristian Stimming <stimming@tuhh.de>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Makefile

+# Set the installation directories; this section is needed only in
+# gitk.git but probably not in git.git.
+ifndef gitexecdir
+	gitexecdir := $(shell git --exec-path)
+endif
+ifndef sharedir
+	sharedir := $(dir $(gitexecdir))share
+endif
+
+# From here on, these are needed in git.git/gitk/Makefile.
+gitk_libdir   ?= $(sharedir)/gitk/lib
+msgsdir    ?= $(gitk_libdir)/msgs
+msgsdir_SQ  = $(subst ','\'',$(msgsdir))
+
+## Beginning of po-file creation rules
+XGETTEXT   ?= xgettext
+MSGFMT     ?= msgfmt
+PO_TEMPLATE = po/gitk.pot
+ALL_POFILES = $(wildcard po/*.po)
+ALL_MSGFILES = $(subst .po,.msg,$(ALL_POFILES))
+
+all:: $(ALL_MSGFILES)
+
+$(PO_TEMPLATE): gitk
+	$(XGETTEXT) -kmc -LTcl -o $@ gitk
+update-po:: $(PO_TEMPLATE)
+	$(foreach p, $(ALL_POFILES), echo Updating $p ; msgmerge -U $p $(PO_TEMPLATE) ; )
+$(ALL_MSGFILES): %.msg : %.po
+	@echo Generating catalog $@
+	$(MSGFMT) --statistics --tcl $< -l $(basename $(notdir $<)) -d $(dir $@)
+
+clean::
+	rm -f $(ALL_PROGRAMS) po/*.msg
+## End of po-file creation rules
+
+# Install rules for po-files
+install: all
+	$(QUIET)$(INSTALL_D0)'$(DESTDIR_SQ)$(msgsdir_SQ)' $(INSTALL_D1)
+	$(QUIET)$(foreach p,$(ALL_MSGFILES), $(INSTALL_R0)$p $(INSTALL_R1) '$(DESTDIR_SQ)$(msgsdir_SQ)' &&) true
+
+uninstall:
+	$(QUIET)$(foreach p,$(ALL_MSGFILES), $(REMOVE_F0)'$(DESTDIR_SQ)$(msgsdir_SQ)'/$(notdir $p) $(REMOVE_F1) &&) true
+	$(QUIET)$(REMOVE_D0)'$(DESTDIR_SQ)$(msgsdir_SQ)' $(REMOVE_D1)
+	$(QUIET)$(REMOVE_D0)'$(DESTDIR_SQ)$(libdir_SQ)' $(REMOVE_D1)
+	$(QUIET)$(REMOVE_D0)`dirname '$(DESTDIR_SQ)$(libdir_SQ)'` $(REMOVE_D1)