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