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authorSteven Rostedt <srostedt@redhat.com>2012-01-13 17:53:40 -0500
committerSteven Rostedt <rostedt@goodmis.org>2012-01-13 18:01:48 -0500
commit364212fddaaa60c5a64f67a0f5624ad996ecc8a0 (patch)
tree47ce8b894b493e59d142f91f5b2c943e48d3d29b /scripts
parentd060d963e88f3e990cec2fe5214de49de9a49eca (diff)
downloadlinaro-lsk-364212fddaaa60c5a64f67a0f5624ad996ecc8a0.tar.gz
kconfig/streamline-config.pl: Fix parsing Makefile with variables
Thomas Lange reported that when he did a 'make localmodconfig', his config was missing the brcmsmac driver, even though he had the module loaded. Looking into this, I found the file: drivers/net/wireless/brcm80211/brcmsmac/Makefile had the following in the Makefile: MODULEPFX := brcmsmac obj-$(CONFIG_BRCMSMAC) += $(MODULEPFX).o The way streamline-config.pl works, is parsing all the obj-$(CONFIG_FOO) += foo.o lines to find that CONFIG_FOO belongs to the module foo.ko. But in this case, the brcmsmac.o was not used, but a variable in its place. By changing streamline-config.pl to remember defined variables in Makefiles and substituting them when they are used in the obj-X lines, allows Thomas (and others) to have their brcmsmac module stay configured when it is loaded and running "make localmodconfig". Reported-by: Thomas Lange <thomas-lange2@gmx.de> Tested-by: Thomas Lange <thomas-lange2@gmx.de> Cc: Arend van Spriel <arend@broadcom.com> Cc: stable@vger.kernel.org Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/kconfig/streamline_config.pl29
1 files changed, 29 insertions, 0 deletions
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 42ef5ea5ebd..bccf07ddd0b 100644
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -250,10 +250,33 @@ if ($kconfig) {
read_kconfig($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 $line = "";
+ my %make_vars;
open(MIN,$makefile) || die "Can't open $makefile";
while (<MIN>) {
@@ -270,10 +293,16 @@ foreach my $makefile (@makefiles) {
my $objs;
+ $_ = convert_vars($_, %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)) {
foreach my $obj (split /\s+/,$objs) {