Can generate pot files on command.

backends.py

@@ -312,6 +312,9 @@ class NinjaBackend(Backend):
         self.generate_rules(outfile)
         outfile.write('# Build rules for targets\n\n')
         [self.generate_target(t, outfile) for t in self.build.get_targets().values()]
+        if len(self.build.pot) > 0:
+            outfile.write('# Build rules for localisation.\n\n')
+            self.generate_po(outfile)
         outfile.write('# Test rules\n\n')
         self.generate_tests(outfile)
         outfile.write('# Install rules\n\n')
@@ -326,6 +329,16 @@ class NinjaBackend(Backend):
         outfile.close()
         os.replace(tempfilename, outfilename)
 
+    def generate_po(self, outfile):
+        for p in self.build.pot:
+            (packagename, languages, subdir) = p
+            input_file = os.path.join(subdir, 'POTFILES')
+            elem = NinjaBuildElement('pot', 'GEN_POT', [])
+            elem.add_item('OUTFILE', packagename + '.pot')
+            elem.add_item('FILELIST', os.path.join(self.environment.get_source_dir(), input_file))
+            elem.add_item('OUTDIR', os.path.join(self.environment.get_source_dir(), subdir))
+            elem.write(outfile)
+
     def generate_coverage_rules(self, outfile):
         (gcovr_exe, lcov_exe, genhtml_exe) = environment.find_coverage_tools()
         added_rule = False
@@ -510,7 +523,7 @@ class NinjaBackend(Backend):
 
     def generate_gettext_rules(self, outfile):
         rule = 'rule GEN_POT\n'
-        command = " command = xgettext -p '$OUTDIR' -D '%s' -k_ -o '$OUTFILE'\n" % \
+        command = " command = xgettext -p $OUTDIR -f $FILELIST -D '%s' -k_ -o $OUTFILE\n" % \
         self.environment.get_source_dir()
         outfile.write(rule)
         outfile.write(command)

interpreter.py

@@ -994,7 +994,7 @@ class Interpreter():
         # TODO: check that elements are strings
         if len(self.build.pot) > 0:
             raise InterpreterException('More than one gettext definitions currently not supported.')
-        self.build.pot.append((packagename, languages))
+        self.build.pot.append((packagename, languages, self.subdir))
 
     def func_configuration_data(self, node, args, kwargs):
         if len(args) != 0:

test cases/frameworks/6 gettext/po/intltest.pot

@@ -0,0 +1,22 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2013-09-12 18:53+0300\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=CHARSET\n"
+"Content-Transfer-Encoding: 8bit\n"
+
+#: src/intlmain.c:15
+msgid "International greeting."
+msgstr ""