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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel…
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…/git/rostedt/linux-kconfig

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-kconfig:
  kconfig/streamline-config.pl: Fix parsing Makefile with variables
  kconfig/streamline-config.pl: Simplify backslash line concatination
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torvalds committed Jan 15, 2012
2 parents 51be084 + 364212f commit 1e6c4df
Showing 1 changed file with 40 additions and 12 deletions.
52 changes: 40 additions & 12 deletions scripts/kconfig/streamline_config.pl
Original file line number Diff line number Diff line change
Expand Up @@ -250,33 +250,61 @@ sub read_kconfig {
read_kconfig($kconfig);
}

sub convert_vars {
my ($line, %vars) = @_;

my $process = "";

while ($line =~ s/^(.*?)(\$\((.*?)\))//) {
my $start = $1;
my $variable = $2;
my $var = $3;

if (defined($vars{$var})) {
$process .= $start . $vars{$var};
} else {
$process .= $start . $variable;
}
}

$process .= $line;

return $process;
}

# Read all Makefiles to map the configs to the objects
foreach my $makefile (@makefiles) {

my $cont = 0;
my $line = "";
my %make_vars;

open(MIN,$makefile) || die "Can't open $makefile";
while (<MIN>) {
# if this line ends with a backslash, continue
chomp;
if (/^(.*)\\$/) {
$line .= $1;
next;
}

$line .= $_;
$_ = $line;
$line = "";

my $objs;

# is this a line after a line with a backslash?
if ($cont && /(\S.*)$/) {
$objs = $1;
}
$cont = 0;
$_ = convert_vars($_, %make_vars);

# collect objects after obj-$(CONFIG_FOO_BAR)
if (/obj-\$\((CONFIG_[^\)]*)\)\s*[+:]?=\s*(.*)/) {
$var = $1;
$objs = $2;

# check if variables are set
} elsif (/^\s*(\S+)\s*[:]?=\s*(.*\S)/) {
$make_vars{$1} = $2;
}
if (defined($objs)) {
# test if the line ends with a backslash
if ($objs =~ m,(.*)\\$,) {
$objs = $1;
$cont = 1;
}

foreach my $obj (split /\s+/,$objs) {
$obj =~ s/-/_/g;
if ($obj =~ /(.*)\.o$/) {
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