diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2012-01-13 17:53:40 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-25 17:24:47 -0800 |
| commit | adc0186cfa38e2736048a638681db511e65e51fd (patch) | |
| tree | f103524ac9031f799b099b4675749a97cc702ab6 /scripts/kconfig | |
| parent | e5303c25bfacd745f6c6b99a2604ef4e11926c34 (diff) | |
kconfig/streamline-config.pl: Fix parsing Makefile with variables
commit 364212fddaaa60c5a64f67a0f5624ad996ecc8a0 upstream.
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>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'scripts/kconfig')
| -rw-r--r-- | scripts/kconfig/streamline_config.pl | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl index f25809200a97..25f1e71c9bb5 100644 --- a/scripts/kconfig/streamline_config.pl +++ b/scripts/kconfig/streamline_config.pl @@ -242,10 +242,33 @@ 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>) { @@ -262,10 +285,16 @@ 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) { |