All changes were created by running
"pyupgrade --py3-only"
and committing the results. Although this has been performed in the
past, newer versions of pyupgrade can automatically catch more
opportunities, notably list comprehensions can use generators instead,
in the following cases:
- unpacking into function arguments as function(*generator)
- unpacking into assignments of the form x, y = generator
- as the argument to some builtin functions such as min/max/sorted
Also catch a few creeping cases of new code added using older styles.
As seen in the testcase, passing objects to custom_target does not work
if headers are passed extract_objects(), or if extract_all_objects() is used
and the sources include any header files. To fix this, use the code that
already exists for unity build to filter out the nonexistent ".h.o" files.
This already gives for free the handling of genlist, which was mentioned
in a TODO comment.
QEMU would like to use the result of extract_objects in a custom_target;
examples are using objcopy, or using the object files as the key to look
up command line arguments in compile_commands.json. This is slightly
peculiar and not covered by the test suite, but it works; in order to avoid
regressions, add a test case and document it.
Paolo Bonzini
Eli Schwartz
Jussi Pakkanen
Daniel Mensinger