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#
# This perl script template assumes that definitions for
# the following variables are prepended:
#
# DEFAULT_TMPDIR CPP BUILDPLATFORM
#
# ToDo: strip out all the .h junk
#
($Pgm = $0) =~ s/.*\/([^\/]+)$/\1/;
$Usage = "usage: $Pgm: not done yet\n";
$Status = 0; # just used for exit() status
$Verbose = 0;
$Dashdashes_seen = 0;
$Begin_magic_str = "# DO NOT DELETE: Beginning of C dependencies";
$End_magic_str = "# DO NOT DELETE: End of C dependencies";
$Obj_suffix = 'o';
@Defines = ();
$Include_dirs = '';
$Makefile = '';
@Src_files = ();
@File_suffix = ();
$baseName='';
$ignore_output='> /dev/null';
if ( ${BUILDPLATFORM} eq "i386-unknown-mingw32" ) {
# Assuming the underlying perl uses cmd to exec system() calls.
$ignore_output = ">nul";
}
if ( $ENV{'TMPDIR'} ) { # where to make tmp file names
$Tmp_prefix = $ENV{'TMPDIR'} . "/mkdependC$$";
} else {
$Tmp_prefix ="${DEFAULT_TMPDIR}/mkdependC$$";
$ENV{'TMPDIR'} = "${DEFAULT_TMPDIR}"; # set the env var as well
}
$tempfile = '';
sub quit_upon_signal {
if (-f $tempfile) {
print STDERR "Deleting $tempfile .. \n";
unlink $tempfile;
}
}
$SIG{'INT'} = 'quit_upon_signal';
$SIG{'QUIT'} = 'quit_upon_signal';
&mangle_command_line_args();
if ( ! $Makefile && -f 'makefile' ) {
$Makefile = 'makefile';
} elsif ( ! $Makefile && -f 'Makefile') {
$Makefile = 'Makefile';
} elsif ( ! $Makefile) {
die "$Pgm: no makefile or Makefile found\n";
}
@Depend_lines = ();
print STDERR "Include_dirs=$Include_dirs\n" if $Verbose;
foreach $sf (@Src_files) {
# just like lit-inputter
# except it puts each file through CPP and
# a de-commenter (not implemented);
# builds up @Depend_lines
print STDERR "Here we go for source file: $sf\n" if $Verbose;
($baseName = $sf) =~ s/\.(c|hc)$//;
&slurp_file($sf, 'fh00');
}
# Tiresome EOL termination issues
if ( ${BUILDPLATFORM} eq "i386-unknown-mingw32" ) {
$Begin_magic_str = $Begin_magic_str . "\r\n";
$End_magic_str = $End_magic_str . "\r\n";
} else {
$Begin_magic_str = $Begin_magic_str . "\n";
$End_magic_str = $End_magic_str . "\n";
}
# OK, mangle the Makefile
unlink("$Makefile.bak");
rename($Makefile,"$Makefile.bak");
# now copy Makefile.bak into Makefile, rm'ing old dependencies
# and adding the new
open(OMKF,"< $Makefile.bak") || die "$Pgm: can't open $Makefile.bak: $!\n";
open(NMKF,"> $Makefile") || die "$Pgm: can't open $Makefile: $!\n";
binmode(OMKF); # Do not add stupid ^M's to the output on Win32
binmode(NMKF); # Do not add stupid ^M's to the output on Win32
select(NMKF);
$_ = <OMKF>;
while ($_ && $_ ne $Begin_magic_str) { # copy through, 'til Begin_magic_str
print $_;
$_ = <OMKF>;
}
while ($_ && $_ ne $End_magic_str) { # delete 'til End_magic_str
$_ = <OMKF>;
}
# insert dependencies
print $Begin_magic_str;
print @Depend_lines;
print $End_magic_str;
while (<OMKF>) { # copy the rest through
print $_;
}
close(NMKF);
close(OMKF);
exit 0;
sub mangle_command_line_args {
while($_ = $ARGV[0]) {
shift(@ARGV);
if ( /^--$/ ) {
$Dashdashes_seen++;
} elsif ( /^(-optc)?(-D.*)/ ) { # recognized wherever they occur
push(@Defines, $2);
} elsif ( /^(-optc)?(-I.*)/ ) {
$Include_dirs .= " $2";
} elsif ($Dashdashes_seen != 1) { # not between -- ... --
if ( /^-v$/ ) {
$Verbose++;
} elsif ( /^-f/ ) {
$Makefile = &grab_arg_arg($_);
} elsif ( /^-o/ ) {
$Obj_suffix = &grab_arg_arg($_);
} elsif ( /^-s/ ) {
local($suff) = &grab_arg_arg($_);
push(@File_suffix, $suff);
} elsif ( /^-bs/ ) {
$Begin_magic_str = &grab_arg_arg($_);
} elsif ( /^-es/ ) {
$End_magic_str = &grab_arg_arg($_);
} elsif ( /^-w/ ) {
$Width = &grab_arg_arg($_);
} elsif ( /^-/ ) {
print STDERR "$Pgm: unknown option ignored: $_\n";
} else {
push(@Src_files, $_);
}
} elsif ($Dashdashes_seen == 1) { # where we ignore unknown options
push(@Src_files,$_) if ! /^-/;
}
}
}
sub grab_arg_arg {
local($option) = @_;
local($rest_of_arg);
($rest_of_arg = $option) =~ s/^-.//;
if ($rest_of_arg) {
return($rest_of_arg);
} elsif ($#ARGV >= 0) {
local($temp) = $ARGV[0]; shift(@ARGV);
return($temp);
} else {
die "$Pgm: no argument following $option option\n";
}
}
sub slurp_file { # follows an example in the `open' item in perl man page
local($fname,$fhandle) = @_;
local($depend,$dep); # tmp
local(@Deps);
$fhandle++; # a string increment
$fname = &tidy_dir_names($fname);
($tempfile = $fname) =~ s/\.[^\.]*$/\.d/;
$tempfile =~ s|.*/([^/]+)$|$1|g;
# ${CPP} better be 'gcc -E', or the -x option will fail...
# ..and the -MM & -MMD.
$result = system("${CPP} -MM -MMD $Include_dirs @Defines -x c $fname $ignore_output");
if ($result != 0) {
# On the cheesy side..we do want to know what went wrong, so
# re-run the command.
$result = system("${CPP} -MM -MMD $Include_dirs @Defines -x c $fname ");
if ($result != 0) {
unlink($tempfile);
exit($result);
}
};
local($dep_contents)='';
local($deps)='';
open($fhandle, $tempfile) || die "$Pgm: Can't open $tempfile: $!\n";
while (<$fhandle>) {
chop;
$dep_contents .= $_;
}
($deps = $dep_contents) =~ s|^[^:]+:(.*)$|$1|g;
$deps =~ s| \\| |g;
@Deps = split(/ +/, $deps);
$depend = "$baseName.$Obj_suffix";
foreach $suff (@File_suffix) {
$depend .= " $baseName.${suff}_$Obj_suffix";
}
foreach $dep (@Deps) {
push(@Depend_lines, "$depend: $dep\n") if $dep ne '';
}
close($fhandle);
unlink($tempfile);
$tempfile = ''; # for quit_upon_signal
}
sub tidy_dir_names { # rm various pernicious dir-name combinations...
local($str) = @_;
$str =~ s|/[^/.][^/]*/\.\.||g; # nuke: /<dir>/..
$str =~ s|/\.[^.][^/]*/\.\.||g; # nuke: /./.. (and others)
$str =~ s|"||g;
$str =~ s| \./| |;
$str;
}
|
