logger - set logger properties#

yosys> help logger#
logger [options]
This command sets global logger properties, also available using command line
options.
-[no]time
enable/disable display of timestamp in log output.
-[no]stderr
enable/disable logging errors to stderr.
-warn regex
print a warning for all log messages matching the regex.
-nowarn regex
if a warning message matches the regex, it is printed as regular
message instead.
-werror regex
if a warning message matches the regex, it is printed as error
message instead and the tool terminates with a nonzero return code.
-[no]debug
globally enable/disable debug log messages.
-experimental <feature>
do not print warnings for the specified experimental feature
-expect <type> <regex> <expected_count>
expect log, warning or error to appear. matched errors will terminate
with exit code 0.
-expect-no-warnings
gives error in case there is at least one warning that is not expected.
-check-expected
verifies that the patterns previously set up by -expect have actually
been met, then clears the expected log list.  If this is not called
manually, the check will happen at yosys exist time instead.