test cases/python3/3 cython: fix dependency files
The Cython generation depends on cstorer.pxd as well, so add that as
dependency.
pyx_c = custom_target('storer_pyx',
output : 'storer_pyx.c',
input : 'storer.pyx',
+ depend_files : 'cstorer.pxd',
command : [cython, '@INPUT@', '-o', '@OUTPUT@'],
)
