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kconfig_lint: Exclude some Kconfig symbols from unused symbol checks 

The configuration that coreboot uses for setting selected symbols
typically involves a structure like this:
config BLEH_SPECIFIC_OPTIONS
def_bool y
select SYMBOL

This leads to an an extra kconfig symbol BLEH_SPECIFIC_OPTIONS
that is never referenced by anything else, generating a warning.

Since this is currently the construct that coreboot uses, filter it
out of the warnings for now.

Change-Id: I85a95e4c4e8469870c7f219f2a92955819845573
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/13457
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Martin Roth 2016-01-25 16:12:49 -07:00
parent 63ea4930e4
commit 6bfbf1c66f
1 changed files with 6 additions and 0 deletions
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6
util/lint/kconfig_lint
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@ -51,6 +51,8 @@ my %used_symbols; # structure of symbols used in the tree, and where th
my @collected_symbols; #
my %selected_symbols; # list of symbols that are enabled by a select statement
my $exclude_unused = '_SPECIFIC_OPTIONS|SOUTH_BRIDGE_OPTIONS';
Main();
#-------------------------------------------------------------------------------
@ -380,6 +382,10 @@ sub check_used_symbols {
# loop through all defined symbols and see if they're used anywhere
foreach my $key ( sort ( keys %symbols ) ) {
if ( $key =~ /$exclude_unused/ ) {
next;
}
#see if they're used internal to Kconfig
next if ( exists $referenced_symbols{$key} );