Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> On Sat, 2002-07-13 at 14:41, Roy Sigurd Karlsbakk wrote:
>> Why not add a menu item under kernel hacking?
>
> CONFIG_TEACH_USER_TO_USE_GREP
It's a bit challenging to grep for errors in gcc's output, as
gcc produces multiline errors and warnings.
Here's a perl script I whipped up yesterday to filter out
all but the errors and warnings from a make + gcc run
for some other project; it'd probably do nicely on kernel
builds. I use it like this:
make > log 2>&1
errfilter.pl log | more
It has the dubious feature that it properly filters out the
warnings gcc produces on .h files that don't end in newlines
(guess what IDE people use here?)
- Dan
--- errfilter.pl ---
#!/usr/bin/perl
# Filter out all but essential lines of the output of a make + gcc run.
# Dan Kegel dkegel@ixiacom.com 12 July 2002
# Join logical lines which have been split into multiple physical lines
while (<>) {
chop;
if (/^\S/) {
&save($linebuf);
$linebuf = "";
}
$linebuf .= $_;
}
# Force blank lines at end
&save($linebuf);
&save("");
# Handle next logical line. Handle lines of context, like 'Entering directory', properly.
sub save
{
my($buf) = $_[0];
# Remove excess space used at beginning of all but first physical
# of a long logical line.
$buf =~ s/ */ /g;
if ($buf =~ /In file included from/) {
# Handle include context.
$prefix = $buf."\n";
} elsif ($buf =~ /Entering directory/) {
# Handle directory context.
unshift(@dir, $buf."\n");
$curdir = $dir[0];
} elsif ($buf =~ /Leaving directory/) {
# Handle directory context.
shift(@dir);
$curdir = $dir[0];
} else {
# Handle possible error lines.
if (&filter($buf)) {
# It's an error. Print it out with its context.
print $curdir.$prefix.$buf;
print "\n";
# Dir context only gets printed out once per directory change.
$curdir = "";
}
# Include context only gets printed out for immediately following line.
$prefix = "";
}
}
# Return true if given logical line contains a gcc error or warning and has not been seen before
sub filter
{
my($line) = $_[0];
if ($line =~ /:.*:/) {
if ($line !~ /treated|sed.*\.d|no newline at end|warning: overriding commands|warning: ignoring old commands|File format not recognized/) {
# uniq
if ($out{$line} == 0) {
$out{$line}++;
return 1;
}
}
}
return 0;
}
-
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This archive was generated by hypermail 2b29 : Mon Jul 15 2002 - 22:00:26 EST