142 lines
2.8 KiB
Plaintext
142 lines
2.8 KiB
Plaintext
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#!../perl
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$M = '-M';
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$M = '-m' if -d '/usr/uts' && -f '/etc/master';
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do 'getopt.pl';
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do Getopt('f');
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if ($opt_f) {
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$makefile = $opt_f;
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}
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elsif (-f 'makefile') {
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$makefile = 'makefile';
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}
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elsif (-f 'Makefile') {
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$makefile = 'Makefile';
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}
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else {
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die "No makefile\n";
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}
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$MF = 'mf00';
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while(($key,$val) = each(ENV)) {
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$mac{$key} = $val;
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}
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do scan($makefile);
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$co = $action{'.c.o'};
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$co = ' ' unless $co;
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$missing = "Missing dependencies:\n";
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foreach $key (sort keys(o)) {
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if ($oc{$key}) {
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$src = $oc{$key};
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$action = $action{$key};
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}
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else {
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$action = '';
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}
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if (!$action) {
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if ($co && ($c = $key) =~ s/\.o$/.c/ && -f $c) {
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$src = $c;
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$action = $co;
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}
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else {
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print "No source found for $key $c\n";
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next;
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}
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}
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$I = '';
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$D = '';
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$I .= $1 while $action =~ s/(-I\S+\s*)//;
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$D .= $1 . ' ' while $action =~ s/(-D\w+)//;
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if ($opt_v) {
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$cmd = "Checking $key: cc $M $D $I $src";
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$cmd =~ s/\s\s+/ /g;
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print stderr $cmd,"\n";
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}
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open(CPP,"cc $M $D $I $src|") || die "Can't run C preprocessor: $!";
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while (<CPP>) {
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($name,$dep) = split;
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$dep =~ s|^\./||;
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(print $missing,"$key: $dep\n"),($missing='')
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unless ($dep{"$key: $dep"} += 2) > 2;
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}
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}
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$extra = "\nExtraneous dependencies:\n";
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foreach $key (sort keys(dep)) {
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if ($key =~ /\.o: .*\.h$/ && $dep{$key} == 1) {
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print $extra,$key,"\n";
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$extra = '';
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}
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}
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sub scan {
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local($makefile) = @_;
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local($MF) = $MF;
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print stderr "Analyzing $makefile.\n" if $opt_v;
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$MF++;
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open($MF,$makefile) || die "Can't open $makefile: $!";
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while (<$MF>) {
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chop;
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chop($_ = $_ . <$MF>) while s/\\$//;
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next if /^#/;
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next if /^$/;
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s/\$\((\w+):([^=)]*)=([^)]*)\)/do subst("$1","$2","$3")/eg;
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s/\$\((\w+)\)/$mac{$1}/eg;
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$mac{$1} = $2, next if /^(\w+)\s*=\s*(.*)/;
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if (/^include\s+(.*)/) {
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do scan($1);
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print stderr "Continuing $makefile.\n" if $opt_v;
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next;
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}
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if (/^([^:]+):\s*(.*)/) {
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$left = $1;
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$right = $2;
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if ($right =~ /^([^;]*);(.*)/) {
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$right = $1;
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$action = $2;
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}
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else {
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$action = '';
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}
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while (<$MF>) {
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last unless /^\t/;
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chop;
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chop($_ = $_ . <$MF>) while s/\\$//;
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next if /^#/;
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last if /^$/;
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s/\$\((\w+):([^=)]*)=([^)]*)\)/do subst("$1","$2","$3")/eg;
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s/\$\((\w+)\)/$mac{$1}/eg;
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$action .= $_;
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}
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foreach $targ (split(' ',$left)) {
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$targ =~ s|^\./||;
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foreach $src (split(' ',$right)) {
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$src =~ s|^\./||;
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$deplist{$targ} .= ' ' . $src;
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$dep{"$targ: $src"} = 1;
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$o{$src} = 1 if $src =~ /\.o$/;
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$oc{$targ} = $src if $targ =~ /\.o$/ && $src =~ /\.[yc]$/;
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}
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$action{$targ} .= $action;
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}
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redo if $_;
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}
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}
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close($MF);
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}
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sub subst {
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local($foo,$from,$to) = @_;
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$foo = $mac{$foo};
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$from =~ s/\./[.]/;
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y/a/a/;
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$foo =~ s/\b$from\b/$to/g;
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$foo;
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}
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