build: Don't use an intermediate .pot file to do translations

Declare freedesktop.org.xml.in to be translatable directly, without
extracting translatable strings from a .pot which we then translate,
which we then need to merge into translations.

Files in its/ from Robert Ancell <robert.ancell@canonical.com>
!4

Makefile.am

@@ -24,6 +24,8 @@ endif
 
 man_MANS = update-mime-database.1
 
+ITS_FILES = its/shared-mime-info.loc its/shared-mime-info.its
+
 EXTRA_DIST = \
 	shared-mime-info-spec.xml	\
 	freedesktop.org.xml.in		\
@@ -32,28 +34,17 @@ EXTRA_DIST = \
 	README				\
 	HACKING				\
 	$(man_MANS)			\
-	shared-mime-info.pc.in		\
-	shared-mime-info.pot		\
-	mime-info.its
+	$(ITS_FILES)			\
+	shared-mime-info.pc.in
 
 CLEANFILES = freedesktop.org.xml po/stamp-it
-MAINTAINERCLEANFILES = shared-mime-info.pot
 
 pkgconfigdir = $(datadir)/pkgconfig
 pkgconfig_DATA = shared-mime-info.pc
 
 $(pkgconfig_DATA): config.status
 
-all-recursive: shared-mime-info.pot
-
-shared-mime-info.pot: freedesktop.org.xml.in mime-info.its
-	$(AM_V_GEN)$(ITSTOOL) -i $(srcdir)/mime-info.its -o $@ $<
-	test "$(srcdir)" = . || cp shared-mime-info.pot $(srcdir)/shared-mime-info.pot
-
-po/shared-mime-info.pot: shared-mime-info.pot
-	$(MAKE) -C po shared-mime-info.pot
-
-freedesktop.org.xml: freedesktop.org.xml.in shared-mime-info.pot
+freedesktop.org.xml: freedesktop.org.xml.in
 	$(MAKE) -C po update-gmo
 	$(AM_V_GEN)$(ITSTOOL) -j $< -o $@ $(top_srcdir)/po/*.gmo
 
@@ -89,6 +80,9 @@ all: $(defaultmakedeps)
 
 XDGMIME_PATH=@XDGMIME_PATH@
 
+po/shared-mime-info.pot:
+	make -C po shared-mime-info.pot
+
 local-test: po/shared-mime-info.pot freedesktop.org.xml update-mime-database$(EXEEXT)
 if CROSS_COMPILING
 	@echo "Cross compiling: Skipping checks"

mime-info.its → its/shared-mime-info.its

-<its:rules version="2.0"
-           xmlns:its="http://www.w3.org/2005/11/its"
-           xmlns:mi="http://www.freedesktop.org/standards/shared-mime-info">
+<?xml version="1.0"?>
+<its:rules xmlns:its="http://www.w3.org/2005/11/its"
+           xmlns:gt="https://www.gnu.org/s/gettext/ns/its/extensions/1.0"
+           xmlns:mi="http://www.freedesktop.org/standards/shared-mime-info"
+           version="2.0">
+    <its:translateRule translate="yes" selector="//mi:comment"/>
     <its:translateRule translate="no" selector="//mi:expanded-acronym"/>
     <its:translateRule translate="no" selector="//mi:acronym"/>
 </its:rules>

its/shared-mime-info.loc

+<?xml version="1.0"?>
+<locatingRules>
+  <locatingRule name="shared-mime-info" pattern="*.xml">
+    <documentRule localName="mime-info" target="shared-mime-info.its"/>
+  </locatingRule>
+</locatingRules>

po/Makevars

@@ -7,6 +7,9 @@ DOMAIN = $(PACKAGE)
 subdir = po
 top_builddir = ..
 
+# This allows us using local its files
+XGETTEXT := env GETTEXTDATADIRS="$(top_srcdir)/" $(XGETTEXT)
+
 # These options get passed to xgettext.
 XGETTEXT_OPTIONS = --keyword=_ --keyword=N_
 

po/POTFILES.in

-shared-mime-info.pot
+freedesktop.org.xml.in