mars/scripts/gen_config.pl

125 lines
2.4 KiB
Perl
Executable File

#!/usr/bin/perl
use strict;
use warnings;
use 5.010;
use Data::Dumper;
my $DEBUG = 0;
##
## Parse Kconfig from STDIN
##
my $option;
my $type;
my @default;
while (my $line = <STDIN>) {
if ($line =~ /^config\s+(\w+)\W*$/) {
$option = $1;
printf STDERR "OPTION: %s\n", $option if $DEBUG;
}
elsif ($line =~ /^\s+(tristate|bool|int|string)\s+.*$/) {
$type = $1;
printf STDERR "TYPE: %s\n", $type if $DEBUG;
}
elsif ($line =~ /^\s+default\s+(.*)$/) {
printf STDERR "DEFAULT: %s\n", $1 if $DEBUG;
push @default, {
option => $option,
type => $type,
value => $1,
} if $option;
}
elsif ($line =~ /^\s+---help---\s+$/) {
# ignore lines after this by unsetting $option
undef $option;
# Kconfig syntax allows to have directives after the help section,
# but we do not use this freedom here, for simplicity.
}
}
print STDERR Dumper(\@default) if $DEBUG;
##
## Print the header
##
print qq%
#ifndef MARS_CONFIG_H
#define MARS_CONFIG_H
/*
* Module default settings from Kconfig
*
* If the module is built as an external module, this file provides
* reasonable default settings for configuration variables CONFIG_*.
* The defaults are extracted from Kconfig. If you want to change a
* setting, please edit Kconfig directly and regenerate this file.
*
* This file was auto-generated with $0
* -- DO NOT EDIT MANUALLY --
*/
#ifndef CONFIG_MARS_HAVE_BIGMODULE
#define CONFIG_MARS_HAVE_BIGMODULE
#endif
%;
##
## Print option defaults
##
foreach my $opt (@default) {
my $optname = $opt->{option};
my $optval = $opt->{value};
if (!defined($optname) || !defined($optval)) {
printf(STDERR "SKIPPED option due to missing parameters: optname=%s optval=%s\n",
$optname||'', $optval||'');
next;
}
given ($opt->{type}) {
when ('tristate') {
# ignore tristate
}
when ('bool') {
if ($optval eq 'n') {
print qq%
/* CONFIG_$optname is unset */
%;
}
else {
print qq%
#ifndef CONFIG_$optname
#define CONFIG_$optname 1
#endif
%;
}
}
when (['int', 'string']) {
print qq%
#ifndef CONFIG_$optname
#define CONFIG_$optname $optval
#endif
%;
}
}
}
print qq%
#endif /* MARS_CONFIG_H */
%;