Reorganisation of the source tree

Most of the other users of the fptools build system have migrated to
Cabal, and with the move to darcs we can now flatten the source tree
without losing history, so here goes.

The main change is that the ghc/ subdir is gone, and most of what it
contained is now at the top level.  The build system now makes no
pretense at being multi-project, it is just the GHC build system.

No doubt this will break many things, and there will be a period of
instability while we fix the dependencies.  A straightforward build
should work, but I haven't yet fixed binary/source distributions.
Changes to the Building Guide will follow, too.

1 files changed, 188 insertions, 0 deletions

diff --git a/utils/parallel/ps-scale-y.pl b/utils/parallel/ps-scale-y.pl
new file mode 100644
index 0000000000..0e1242081c
--- /dev/null
+++ b/utils/parallel/ps-scale-y.pl
@@ -0,0 +1,188 @@
+#!/usr/local/bin/perl
+##############################################################################
+# Time-stamp: <Wed Jul 24 1996 22:19:02 Stardate: [-31]7859.44 hwloidl>
+#
+# Usage: ps-scale-y [options] <file>
+#
+# It is assumed that the last line of <file> is of the format:
+#			     %% y_scaling: <f> max: <n>
+# where <f> is a floating point number determining the amount of scaling of 
+# the y-axis of the graph that is necessary. <n> is the real maximal number
+# of tasks in the program (needed to rebuild y-axis). This script replaces the 
+# definitions of the PostScript functions scale-y and unscale-y in <file> by 
+# new definitions that do the right amount of scaling. 
+# The y-axis is rebuilt (using the above maximal number of tasks and a copy 
+# of the print_y_axis routine from qp2ps).
+# If the above line doesn't exist, <file> is unchanged.
+# This script is typically called from gr2ps.
+#
+##############################################################################
+
+require "getopts.pl";
+
+&Getopts('hv');  
+
+do process_options();
+
+$tmpfile = ",t";
+$debug = 0;
+
+# NB: This must be the same as in qp2ps!!
+
+$xmin = 100;
+$xmax = 790;
+
+$scalex = $xmin;
+$labelx = $scalex - 45;
+$markx =  $scalex - 30;
+$major = $scalex - 5;
+$majorticks = 10;
+
+$mmax = 1;
+
+$amax = 0;
+$ymin = 50;
+$ymax = 500;
+
+# E
+open (GET_SCALING,"cat $file | tail -1 |") || die "Can't open pipe:  $file | tail -1 |\n";
+
+$y_scaling = 1.0;
+
+while (<GET_SCALING>){
+    # print STDERR $_;
+    if (/^\%\%\s+y_scaling:\s+([0-9\.]+)\s+max:\s+(\d+)/) {
+	$y_scaling = $1;
+	$pmax = $2;
+	$y_translate = 1.0 - $y_scaling;
+    }
+}
+close (GET_SCALING);
+
+if ( $y_scaling != 1.0 ) {
+    print STDERR "Scaling $file ($y_scaling; $pmax tasks) ...\n" if $opt_v;
+    # print STDERR "SCALING NECESSARY: y_scaling = $y_scaling; y_translate = $y_translate !\n";
+} else {
+    # No scaling necessary!!
+    exit 0;
+}
+
+
+open (IN,"<$file") || die "Can't open file $file\n";
+open (OUT,">$tmpfile") || die "Can't open file $tmpfile\n";
+
+$skip = 0;
+while (<IN>) {
+    $skip = 0 if $skip && /^% End Y-Axis.$/;
+    next if $skip;
+    if (/\/scale\-y/) { 
+	print OUT "/scale-y { gsave\n" .
+	          "           0 50 $y_translate mul translate\n" .
+		  "           1 $y_scaling scale } def\n";
+    }
+    elsif (/\/unscale\-y/) {  
+	print OUT "/unscale-y { grestore } def \n";
+    } else {
+	print OUT $_;
+    }
+    if (/^% Y-Axis:$/) {
+	$skip = 1;
+	do print_y_axis();
+    }
+}
+
+close (IN);
+close (OUT);
+
+rename($tmpfile,$file);
+
+exit 0;
+
+# ###########################################################################
+# Same as in qp2ps (but printing to OUT)!
+# ###########################################################################
+
+sub print_y_axis {
+    local ($i);
+    local ($y, $smax,$majormax, $majorint);
+
+# Y-axis label
+
+    print OUT  "% " . ("-" x 75) . "\n";
+    print OUT  "% Y-Axis (scaled):\n";
+    print OUT  "% " . ("-" x 75) . "\n";
+
+    print OUT ("%scale-y  % y-axis outside scaled area if ps-scale-y rebuilds it!\n");
+
+    print OUT ("gsave\n");
+    print OUT ("HE12 setfont\n");
+    print OUT ("(tasks)\n");
+    print OUT ("dup stringwidth pop\n");
+    print OUT ("$ymax\n");
+    print OUT ("exch sub\n");
+    print OUT ("$labelx exch\n");
+    print OUT ("translate\n");
+    print OUT ("90 rotate\n");
+    print OUT ("0 0 moveto\n");
+    print OUT ("show\n");
+    print OUT ("grestore\n");
+
+# Scale
+
+    if ($pmax < $majorticks) {
+	$majorticks = $pmax;
+    }
+
+    print OUT ("HE12 setfont\n$scalex $ymin moveto\n$scalex $ymax lineto\n");
+    print OUT ("% Max number of tasks: $pmax\n");
+    print OUT ("% Number of ticks: $majorticks\n");
+
+    print OUT  "0.5 setlinewidth\n";
+
+    $y = $ymax; # (($pmax - $ymin)/$majorticks) * ($majorticks-$i) + $ymin;
+    print OUT ("$scalex $y moveto\n$major $y lineto\n");
+    print OUT ("$markx $y moveto\n($pmax) show\n");
+
+    $majormax = int($pmax/$majorticks)*$majorticks;
+    $smax = $majormax*(($ymax-$ymin)/$pmax)+$ymin;
+    $majorint = $majormax/$majorticks;
+
+    for($i=1; $i <= $majorticks; ++$i) {
+	$y = (($smax - $ymin)/$majorticks) * ($majorticks-$i) + $ymin;
+	$majorval = int($majorint * ($majormax/$majorint-$i));
+	print OUT ("$scalex $y moveto\n$major $y lineto\n");
+	print OUT ("$markx $y moveto\n($majorval) show\n");
+    }
+
+    # print OUT ("$xmin $ymax moveto\n10 0 rlineto\n10 0 rmoveto\n($pmax) show\n");
+    print OUT  " stroke\n";
+    print OUT  "1 setlinewidth\n";
+    print OUT ("%unscale-y\n");
+    print OUT ("% End Y-Axis (scaled).\n");
+    print OUT "% " . ("-" x 75) . "\n";
+}
+
+# ----------------------------------------------------------------------------
+
+sub process_options {
+
+    if ( $opt_h ) {                      
+	open(ME,$0) || die "Can't open myself ($0): $!\n";
+	$n = 0;
+	while (<ME>) {
+	    last if $_ =~ /^$/;
+	    print $_;
+	    $n++;
+	}
+	close(ME);
+	exit ;
+    }
+    
+    if ( $#ARGV != 0 ) {
+	print "Usage: $0 [options] <file>\n";
+	print "Use -h option to get details\n";
+	exit 1;
+    }
+
+    $file = $ARGV[0];
+}