comparison kdiff3/admin/config.pl @ 2:53b8ecbce0cb

Initial revision

+#!/usr/bin/perl
+# a script for use by autoconf to make the Makefiles
+# from the Makefile.in's
+#
+# the original autoconf mechanism first splits all substitutions into groups
+# of ca. 90, and than invokes sed for _every_ Makefile.in and every group
+# (so around 2-3 times per Makefile.in). So this takes forever, as sed
+# has to recompile the regexps every time.
+#
+# this script does better. It changes all Makefile.ins in one process.
+# in kdelibs the time for building Makefile went down from 2:59 min to 13 sec!
+#
+# written by Michael Matz <[e-mail]>
+# adapted by Dirk Mueller <[e-mail]>
+#
+# the first part was done by looking at the config.status files generated
+# by configure.
+# 
+
+my $ac_subs=$ARGV[0];
+my $ac_sacfiles = $ARGV[1];
+my $ac_given_srcdir=$ARGV[2];
+my $ac_given_INSTALL=$ARGV[3];
+
+#print "ac_subs=$ac_subs\n";
+#print "ac_sacfiles=$ac_sacfiles\n";
+#print "ac_given_srcdir=$ac_given_srcdir\n";
+#print "ac_given_INSTALL=$ac_given_INSTALL\n";
+
+my ($srcdir, $top_srcdir);
+my $INSTALL;
+my $bad_perl = ($] < 5.005);
+
+open(CF, "< $ac_subs") || die "can't open $ac_subs: $!";
+my @subs = <CF>;
+close(CF);
+chomp @subs;
+@comp_match=();
+@comp_subs=();
+
+if ($bad_perl) {
+    print "Using perl older than version 5.005\n";
+    foreach my $pat (@subs) {
+	if (  ($pat =~ /s%([^%]*)%([^%]*)%g/ )
+	   || ($pat =~ m%/([^/]*)/([^/]*)/g% )
+	   || ($pat =~ /s%([^%]*)%([^%]*)%;t/ )
+	   || ($pat =~ m%/([^/]*)/([^/]*)/;t% )
+           || ($pat =~ /s,([^,]*),(.*),;t/)
+	   ) {
+            # form : s%bla%blubb%g
+            # or     s%bla%blubb%;t t   (autoconf > 2.13 and < 2.52 ?)
+            # or     s,bla,blubb,;t t   (autoconf 2.52)
+            my $srch = $1;
+            my $repl = $2;
+            $repl =~ s/\\(.)/$1/g;
+	    push @comp_subs, make_closure($srch, $repl);
+
+	} elsif ( ($pat =~ /%([^%]*)%d/ )
+	   || ($pat =~ m%/([^/]*)/d% )
+	   ) {
+	    push @comp_subs, make_closure($1, "");
+	} else {
+	    die "Uhh. Malformed pattern in $ac_subs ($pat)"
+		unless ( $pat =~ /^\s*$/ );   # ignore white lines
+	}
+    }
+} else {
+    foreach my $pat (@subs) {
+       if ( ($pat =~ /s%([^%]*)%([^%]*)%g/ ) ||
+            ($pat =~ /s%([^%]*)%([^%]*)%;t/ ) ||
+            ($pat =~ /s,([^,]*),(.*),;t/) ) {
+         # form : s%bla%blubb%g
+         # or     s%bla%blubb%;t t   (autoconf > 2.13 and < 2.52 ?)
+         # or     s,bla,blubb,;t t   (autoconf 2.52)
+         my $srch = $1;
+         my $repl = $2;
+         push @comp_match, eval "qr/\Q$srch\E/";  # compile match pattern
+         $repl =~ s/\\(.)/$1/g;
+         push @comp_subs, $repl;
+      } elsif ( ($pat =~ /%([^%]*)%d/ )
+                || ($pat =~ m%/([^/]*)/d% )
+              ) {
+        push @comp_match, eval "qr/\Q$1\E/";
+        push @comp_subs, "";
+      } else {
+          die "Uhh. Malformed pattern in $ac_cs_root.subs ($pat)"
+          unless ( $pat =~ /^\s*$/ );   # ignore white lines
+      }
+    }
+}
+undef @subs;
+
+# read the list of files to be patched, form:
+# ./Makefile arts/Makefile arts/examples/Makefile arts/flow/Makefile
+
+open(CF, "< $ac_sacfiles") || die "can't open $ac_sacfiles: $!";
+my @ac_files = <CF>;
+close(CF);
+chomp @ac_files;
+
+
+my $ac_file;
+foreach $ac_file (@ac_files) {
+    next if $ac_file =~ /\.\./;
+    next if $ac_file =~ /^\s*$/;
+    my $ac_file_in;
+    my ($ac_dir, $ac_dots, $ac_dir_suffix);
+
+    if ($ac_file =~ /.*:.*/ ) {
+	($ac_file_in = $ac_file) =~ s%[^:]*:%%;
+	$ac_file =~ s%:.*%%;
+    } else {
+	$ac_file_in = $ac_file.".in";
+    }
+
+# Adjust a relative srcdir, top_srcdir, and INSTALL for subdirectories.
+
+# Remove last slash and all that follows it.  Not all systems have dirname.
+    ($ac_dir = $ac_file) =~ s%/[^/][^/]*$%%;
+    if ( ($ac_dir ne $ac_file) && ($ac_dir ne ".")) {
+# The file is in a subdirectory.
+	if (! -d "$ac_dir") { mkdir "$ac_dir", 0777; }
+	($ac_dir_suffix = $ac_dir) =~ s%^./%%;
+	$ac_dir_suffix="/".$ac_dir_suffix;
+# A "../" for each directory in $ac_dir_suffix.
+	($ac_dots = $ac_dir_suffix) =~ s%/[^/]*%../%g;
+    } else {
+	$ac_dir_suffix="";
+	$ac_dots="";
+    }
+
+    if ($ac_given_srcdir eq ".") {
+	$srcdir=".";
+	if ($ac_dots) {
+	    ( $top_srcdir = $ac_dots) =~ s%/$%%;
+	} else { $top_srcdir="."; }
+    } elsif ($ac_given_srcdir =~ m%^/%) {
+	$srcdir=$ac_given_srcdir.$ac_dir_suffix;
+	$top_srcdir = $ac_given_srcdir;
+    } else {
+	$srcdir = $ac_dots.$ac_given_srcdir.$ac_dir_suffix;
+	$top_srcdir = $ac_dots.$ac_given_srcdir;
+    }
+
+    if ($ac_given_INSTALL) {
+	if ($ac_given_INSTALL =~ m%^/% ) {
+	    $INSTALL = $ac_given_INSTALL;
+	} else {
+	    $INSTALL = $ac_dots.$ac_given_INSTALL;
+	}
+    }
+
+    print "fast creating $ac_file\n";
+    unlink $ac_file;
+    my $ac_comsub="";
+    my $fname=$ac_file_in;
+    $fname =~ s%.*/%%;
+    my $configure_input="Generated automatically from $fname by config.pl.";
+    if ($ac_file =~ /.*[Mm]akefile.*/) {
+	$ac_comsub="# ".$configure_input."\n";  # for the first line in $ac_file
+    }
+
+    my $ac_file_inputs;
+    ($ac_file_inputs = $ac_file_in) =~ s%^%$ac_given_srcdir/%;
+    $ac_file_inputs =~ s%:% $ac_given_srcdir/%g;
+
+    patch_file($ac_file, $ac_file_inputs, $ac_comsub);
+}
+
+sub patch_file {
+    my ($outf, $infiles, $firstline) = @_;
+    my $filedata;
+    my @infiles=split(' ', $infiles);
+    my $i=0;
+
+    if ($firstline) {
+	$filedata = $firstline;
+    }
+    foreach my $name (@infiles) {
+	if (open(CF, "< $name")) {
+	    while (<CF>) {
+		$filedata .= $_;
+	    }
+	    close(CF);
+	} else {
+	    print STDERR "can't open $name: $!"."\n";
+	}
+    }
+
+    $filedata =~ s%\@configure_input\@%$configure_input%g;
+    $filedata =~ s%\@srcdir\@%$srcdir%g;
+    $filedata =~ s%\@top_srcdir\@%$top_srcdir%g;
+    $filedata =~ s%\@INSTALL\@%$INSTALL%g;
+
+    if ($bad_perl) {
+	while ($i <= $#comp_subs) {
+	    my $ref = $comp_subs[$i];
+	    &$ref(\$filedata);
+	    $i++;
+	}
+    } else {
+	while ($i <= $#comp_match) {
+	    $filedata =~ s/$comp_match[$i]/$comp_subs[$i]/g;
+	    $i++;
+	}
+    }
+    open(CF, "> $outf") || die "can't create $outf: $!";
+    print CF $filedata;
+    close(CF);
+}
+
+sub make_closure {
+    my ($pat, $sub) = @_;
+    $pat =~ s/\@/\\@/g;   # @bla@ -> \@bla\@
+    $pat =~ s/\$/\\\$/g;  # $bla -> \$bla
+    $sub =~ s/\@/\\@/g;
+    $sub =~ s/\$/\\\$/g;
+    my $ret = eval "return sub { my \$ref=shift; \$\$ref =~ s%$pat%$sub%g; }";
+    if ($@) {
+        print "can't create CODE: $@\n";
+    }
+    return $ret;
+}