Recipe for target `<package>-server.pot` failed if no i10n messages

[rbovard]

Project:

• GeoMapFish version: 2.1.2

Running command: make -f instance_v2.mk upgrade4

Result:

.build/venv/bin/c2ctool upgrade  instance_v2.mk --step 4
make[1]: Entering directory 'v2'
.build/venv/bin/pot-create --keyword _ --config lingua-server.cfg --output nyon/locale/nyon-server.pot nyon/models.py nyon/templates/desktop.html nyon/templates/mobile.html nyon/templates/api/xapihelp.html nyon/templates/api/apihelp.html nyon/templates/api/apihelp_old.html
v2/.build/venv/local/lib/python2.7/site-packages/lingua/extract.py:330: UnicodeWarning: Python extractor called with bytes input. Please update your plugin to submit unicode instead.
  for message in extractor(real_filename, options):
No translatable strings found, aborting
CONST_Makefile:698: recipe for target 'nyon/locale/nyon-server.pot' failed
make[1]: *** [nyon/locale/nyon-server.pot] Error 2
make[1]: Leaving directory 'v2'
Traceback (most recent call last):
  File ".build/venv/bin/c2ctool", line 11, in <module>
    sys.exit(main())
  File "v2/.build/venv/local/lib/python2.7/site-packages/c2cgeoportal/scripts/c2ctool.py", line 100, in main
    c2ctool.upgrade()
  File "v2/.build/venv/local/lib/python2.7/site-packages/c2cgeoportal/scripts/c2ctool.py", line 231, in upgrade
    self.step4()
  File "v2/.build/venv/local/lib/python2.7/site-packages/c2cgeoportal/scripts/c2ctool.py", line 456, in step4
    check_call(["make", "-f", self.options.file, "build"])
  File "/usr/lib/python2.7/subprocess.py", line 540, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['make', '-f', 'instance_v2.mk', 'build']' returned non-zero exit status 2
CONST_Makefile:1288: recipe for target 'upgrade4' failed
make: *** [upgrade4] Error 1

[sbrunner]

@rbovard can you try #2894 as workaround?

[rbovard]

It worked, thanks.