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#!/usr/bin/perl
### THIS IS DESIGNED TO BE RUN BY MAKE! DO NOT RUN FROM THE SHELL (because it MIGHT sigterm the shell)! ###
use strict;
use warnings FATAL => qw(all);
use POSIX ();
# Runs the compiler, passing it the given arguments.
# Filters select output from the compiler's standard error channel and
# can take different actions as a result.
# NOTE: this is *NOT* a hash (sadly: a hash would stringize all the regexes and thus render them useless, plus you can't index a hash based on regexes anyway)
# even though we use the => in it.
# The subs are passed the message, and anything the regex captured.
my $cc = shift(@ARGV);
my $showncmdline = 0;
# GCC's "location of error stuff", which accumulates the "In file included from" include stack
my $location = "";
my @msgfilters = (
[ qr/^(.*) warning: cannot pass objects of non-POD type `(.*)' through `\.\.\.'; call will abort at runtime/ => sub {
my ($msg, $where, $type) = @_;
print $location;
$location = "";
my $errstr = "$where error: cannot pass objects of non-POD type `$type' through `...'\n";
if ($type =~ m/::(basic_)?string/) {
$errstr .= "$where (Did you forget to call c_str()?)\n";
}
die $errstr;
} ],
# Start of an include stack.
[ qr/^In file included from .*[,:]$/ => sub {
my ($msg) = @_;
$location = "$msg\n";
return undef;
} ],
# Continuation of an include stack.
[ qr/^ from .*[,:]$/ => sub {
my ($msg) = @_;
$location .= "$msg\n";
return undef;
} ],
# A function, method, constructor, or destructor is the site of a problem
[ qr/In ((con|de)structor|(member )?function)/ => sub {
my ($msg) = @_;
# If a complete location string is waiting then probably we dropped an error, so drop the location for a new one.
if ($location =~ m/In ((con|de)structor|(member )?function)/) {
$location = "$msg\n";
} else {
$location .= "$msg\n";
}
return undef;
} ],
[ qr/^.* warning: / => sub {
my ($msg) = @_;
my $str = $location . "\e[33;1m$msg\e[0m\n";
$location = "";
return $str;
} ],
[ qr/^.* error: / => sub {
my ($msg) = @_;
my $str = "";
$str = "An error occured when executing:\e[37;1m $cc " . join(' ', @ARGV) . "\n" unless $showncmdline;
$showncmdline = 1;
$str .= $location . "\e[31;1m$msg\e[0m\n";
$location = "";
return $str;
} ],
[ qr/./ => sub {
my ($msg) = @_;
$msg = $location . $msg;
$location = "";
$msg =~ s/std::basic_string\<char\, std\:\:char_traits\<char\>, std::allocator\<char\> \>(\s+|)/std::string/g;
$msg =~ s/std::basic_string\<char\, .*?irc_char_traits\<char\>, std::allocator\<char\> \>(\s+|)/irc::string/g;
for my $stl (qw(deque vector list)) {
$msg =~ s/std::$stl\<(\S+), std::allocator\<(\1)\> \>/std::$stl\<$1\>/g;
}
$msg =~ s/std::map\<(\S+), (\S+), std::less\<\1\>, std::allocator\<std::pair\<const \1, \2\> \> \>/std::map\<$1, $2\>/g;
return $msg;
} ],
);
my $pid;
my ($r_stderr, $w_stderr);
my $name = "";
my $action = "";
if ($cc eq "ar") {
$name = $ARGV[1];
$action = "ARCHIVE";
} else {
foreach my $n (@ARGV)
{
if ($n =~ /\.cpp$/)
{
if ($action eq "BUILD")
{
$name .= " " . $n;
}
else
{
$action = "BUILD";
$name = $n;
}
}
elsif ($action eq "BUILD") # .cpp has priority.
{
next;
}
elsif ($n eq "-o")
{
$action = $name = $n;
}
elsif ($name eq "-o")
{
$action = "LINK";
$name = $n;
}
}
}
if (!defined($cc) || $cc eq "") {
die "Compiler not specified!\n";
}
pipe($r_stderr, $w_stderr) or die "pipe stderr: $!\n";
$pid = fork;
die "Cannot fork to start $cc! $!\n" unless defined($pid);
if ($pid) {
printf "\t\e[1;32m%-20s\e[0m%s\n", $action . ":", $name unless $name eq "";
my $fail = 0;
# Parent - Close child-side pipes.
close $w_stderr;
# Close STDIN to ensure no conflicts with child.
close STDIN;
# Now read each line of stderr
LINE: while (defined(my $line = <$r_stderr>)) {
chomp $line;
for my $filter (@msgfilters) {
my @caps;
if (@caps = ($line =~ $filter->[0])) {
$@ = "";
$line = eval {
$filter->[1]->($line, @caps);
};
if ($@) {
# Note that $line is undef now.
$fail = 1;
print STDERR $@;
}
next LINE unless defined($line);
}
}
# Chomp off newlines again, in case the filters put some back in.
chomp $line;
print STDERR "$line\n";
}
waitpid $pid, 0;
close $r_stderr;
my $exit = $?;
# Simulate the same exit, so make gets the right termination info.
if (POSIX::WIFSIGNALED($exit)) {
# Make won't get the right termination info (it gets ours, not the compiler's), so we must tell the user what really happened ourselves!
print STDERR "$cc killed by signal " . POSIX::WTERMSIGN($exit) . "\n";
kill "TERM", getppid(); # Needed for bsd make.
kill "TERM", $$;
}
else {
if (POSIX::WEXITSTATUS($exit) == 0) {
if ($fail) {
kill "TERM", getppid(); # Needed for bsd make.
kill "TERM", $$;
}
exit 0;
} else {
exit POSIX::WEXITSTATUS($exit);
}
}
} else {
# Child - Close parent-side pipes.
close $r_stderr;
# Divert stderr
open STDERR, ">&", $w_stderr or die "Cannot divert STDERR: $!\n";
# Run the compiler!
exec { $cc } $cc, @ARGV;
die "exec $cc: $!\n";
}
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