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.

2 files changed, 80 insertions, 0 deletions

diff --git a/utils/verbatim/Makefile b/utils/verbatim/Makefile
new file mode 100644
index 0000000000..4a4301dfe0
--- /dev/null
+++ b/utils/verbatim/Makefile
@@ -0,0 +1,17 @@
+TOP=../..
+include $(TOP)/mk/boilerplate.mk
+
+C_SRCS = verbatim.c
+C_PROG = verbatim
+LIBS = $(FLEX_LIB)
+
+override SRC_FLEX_OPTS=-8
+
+#
+# For src distributions, include flex output.
+#
+SRC_DIST_FILES += verbatim.c
+
+CLEAN_FILES += verbatim.c
+
+include $(TOP)/mk/target.mk
diff --git a/utils/verbatim/verbatim.lex b/utils/verbatim/verbatim.lex
new file mode 100644
index 0000000000..bac87cc45f
--- /dev/null
+++ b/utils/verbatim/verbatim.lex
@@ -0,0 +1,63 @@
+
+  /*	This Lex script acts as a filter to pre-process Latex files.
+
+	It surrounds groups of lines beginning with a ">" sign, and
+	preceded and followed by a blank line, with \begin{verbatim} 
+	and \end{verbatim}.  The ">" may be preceded by a digit or digit
+	range (eg 4>, 2-5>, 3->); in this case the digits are removed.  
+	They are meant to be used for filtering out versions.
+
+	It takes words surrounded with @ signs (thus @letrec@) and makes them
+	come out in typewriter font, regardless of the current mode.
+  */
+
+%START  NORM  VERB  MIRANDA VERBATIM VERBATIMSIM
+sp			[ \t]*
+nl			{sp}\n{sp}
+miranda			([0-9]+(\-([0-9]+)?)?)?>
+%{
+#define PUSH		states[top++] =
+#define POP		BEGIN states[--top]
+#define yywrap() 	1
+%}
+%%
+			int states[256];
+			int top;
+			BEGIN NORM;
+			top = 0;
+<NORM>@@		{ printf ("@"); }
+<NORM>@			{ printf ("\\mbox{\\tt "); PUSH NORM;  BEGIN VERB; }
+<VERB>@			{ printf ("}");  POP; }
+<VERB>\n		{ printf ("}\\\\{}\n\\mbox{\\tt "); }
+<VERB>" "		{ printf ("\\ "); }
+<VERB>@@		{ printf ("@"); }
+<VERB>\#		{ printf ("{\\char'43}"); }
+<VERB>\$		{ printf ("{\\char'44}"); }
+<VERB>\%		{ printf ("{\\char'45}"); }
+<VERB>\&		{ printf ("{\\char'46}"); }
+<VERB>\~		{ printf ("{\\char'176}"); }
+<VERB>\_		{ printf ("{\\char'137}"); }
+<VERB>\^		{ printf ("{\\char'136}"); }
+<VERB>\\		{ printf ("{\\char'134}"); }
+<VERB>\{		{ printf ("{\\char'173}"); }
+<VERB>\}		{ printf ("{\\char'175}"); }
+
+<NORM>^@{sp}\n		{ printf( "\\begin{verbatim}\n" ); 
+			  PUSH NORM; BEGIN VERBATIMSIM; }
+<VERBATIMSIM>^@{sp}\n	{ printf( "\\end{verbatim}\n" ); POP; }
+
+<NORM>\\"begin{verbatim}"	{ printf( "\\begin{verbatim}" ); 
+				  PUSH NORM; BEGIN VERBATIM; }
+<VERBATIM>\\"end{verbatim}"	{ printf( "\\end{verbatim}" ); POP; }
+
+<NORM>^\n{miranda}	{ printf ("\\begin{verbatim}\n>" ); 
+			  PUSH NORM; BEGIN MIRANDA; }
+<MIRANDA>\n{miranda}	{ printf( "\n>" ); }
+<MIRANDA>^\n		{ printf ("\\end{verbatim}\n"); POP; }
+%%
+int
+main()
+{
+    yylex();
+    return(0);
+}