X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Fdriver%2Fghc.lprl;h=f5b8d39f08e679343f35be0730433e15d4065f38;hb=438596897ebbe25a07e1c82085cfbc5bdb00f09e;hp=78b5e590edc01a41be05c842d6e3e4017383ab17;hpb=3588accec0ffd087e385a9fa36fa1d484c846ad6;p=ghc-hetmet.git

diff --git a/ghc/driver/ghc.lprl b/ghc/driver/ghc.lprl
index 78b5e59..f5b8d39 100644
--- a/ghc/driver/ghc.lprl
+++ b/ghc/driver/ghc.lprl
@@ -1,4 +1,3 @@
-%
 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1997
 %
 
@@ -46,8 +45,8 @@ to stdout or stderr, however).
 
 The phase at which to STOP processing is determined by a command-line
 option:
+    -E		stop after generating preprocessed, de-litted Haskell (used in conjunction with -cpp)
     -C		stop after generating C (.hc output)
-    -E		stop after generating preprocessed C (.i output)
     -S		stop after generating assembler (.s output)
     -c		stop after generating object files (.o output)
 
@@ -64,9 +63,9 @@ Other commonly-used options are:
 
     -M          Output the Makefile rules recording the
                 dependencies of a list of Haskell files.
-	        (ghc driver just calls upon the help of a
-                 compatible mkdependHS script to do the
-                 actual processing)
+	        (ghc driver script calls upon the help of a
+                 compatible mkdependHS script to do the actual
+		 processing)
 
 The User's Guide has more information about GHC's *many* options.
 
@@ -99,11 +98,13 @@ INSTALLING
 
 HOSTPLATFORM TARGETPLATFORM
 
-PROJECTNAME PROJECTVERSION PROJECTPATCHLEVEL
+ProjectName ProjectVersion ProjectVersionInt ProjectPatchLevel 
+
+HscMajorVersion HscMinorVersion CcMajorVersion CcMinorVersion
 
 TOP_PWD
 
-bindir libdir datadir
+bindir libdir libexecdir datadir
 
 CURRENT_DIR TMPDIR
 
@@ -132,10 +133,12 @@ $TargetPlatform = $TARGETPLATFORM;
 $TopPwd	           = "${TOP_PWD}";
 $InstBinDirGhc     = "${bindir}";
 $InstLibDirGhc     = "${libdir}";
-$InstLibexecDirGhc = "${libexecdir}";
+#
+# Normally the same as InstLibDirGhc, but we accommodate
+# for it being separate.
+#
+$InstLibExecDirGhc = "${libexecdir}";
 $InstDataDirGhc    = "${datadir}";
-$InstSysLibDir     = ( $INSTALLING ) ? "${InstLibDirGhc}/hslibs" : 
-			"$TopPwd/hslibs";
 
 $Status  = 0; # just used for exit() status
 $Verbose = '';
@@ -177,7 +180,7 @@ if ( ! $ENV{'REAL_SHELL'} ) {
 
 @Files_to_tidy = (); # files we nuke in the case of abnormal termination
 
-$Unlit = ( $INSTALLING ) ? "$InstLibexecDirGhc/unlit"
+$Unlit = ( $INSTALLING ) ? "$InstLibExecDirGhc/unlit"
 			 : "$TopPwd/${CURRENT_DIR}/${GHC_UNLIT}";
 
 $Cp   = $CP;
@@ -188,16 +191,15 @@ $Cmp  = 'cmp';
 $Time = '';
 
 $HsCpp	 = # but this is re-set to "cat" (after options) if -cpp not seen
-	   ( $INSTALLING ) ? "$InstLibexecDirGhc/hscpp"
+	   ( $INSTALLING ) ? "$InstLibExecDirGhc/hscpp"
 			   : "$TopPwd/${CURRENT_DIR}/${GHC_HSCPP}";
 
 @HsCpp_flags	= ();
-$genSPECS_flag	= '';		# See ../utils/hscpp/hscpp.prl
-$HsC	 = ( $INSTALLING ) ? "$InstLibexecDirGhc/hsc"
+$HsC	 = ( $INSTALLING ) ? "$InstLibExecDirGhc/hsc"
 			   : "$TopPwd/${CURRENT_DIR}/${GHC_HSC}";
 
 # For PVM fiends only
-$SysMan	 = ( $INSTALLING ) ? "$InstLibexecDirGhc/SysMan"
+$SysMan	 = ( $INSTALLING ) ? "$InstLibExecDirGhc/SysMan"
 			   : "$TopPwd/${CURRENT_DIR}/${GHC_SYSMAN}";
 
 @Unlit_flags	= ();
@@ -219,18 +221,17 @@ These are the default values, which may be changed by user flags.
 
 \begin{code}
 sub setupOptFlags {
-   $Oopt_UnfoldingUseThreshold	  = '-fsimpl-uf-use-threshold3';
    $Oopt_MaxSimplifierIterations  = '-fmax-simplifier-iterations4';
    $Oopt_PedanticBottoms	  = '-fpedantic-bottoms'; # ON by default
    $Oopt_MonadEtaExpansion	  = '';
    $Oopt_FinalStgProfilingMassage = '';
    $Oopt_StgStats		  = '';
-   $Oopt_SpecialiseUnboxed	  = '';
-   $Oopt_DoSpecialise		  = ''; # ToDo:LATER: '-fspecialise';
+   $Oopt_DoSpecialise		  = '-fspecialise';
    $Oopt_FoldrBuild		  = 0; # *Off* by default!
    $Oopt_FB_Support		  = ''; # was '-fdo-arity-expand';
 #  $Oopt_FoldrBuildWW		  = 0; # Off by default
    $Oopt_FoldrBuildInline	  = ''; # was '-fdo-inline-foldr-build';
+   $Oopt_ShowSimplifierProgress   = '';
 } # end of setupOptFlags
 
 # Assign defaults to these right away.
@@ -238,9 +239,13 @@ sub setupOptFlags {
 \end{code}
 
 Things to do with C compilers/etc:
+
+(added -Wimplicit: implicit prototypes cause very hard-to-find
+problems, so I'm turing on the warnings -- SDM 4/5/98)
+
 \begin{code}
 $CcRegd	 	= $GHC_OPT_HILEV_ASM;
-@CcBoth_flags	= ('-S');   # flags for *any* C compilation
+@CcBoth_flags	= ('-S','-Wimplicit');   # flags for *any* C compilation
 @CcInjects	= ();
 
 # GCC flags: 
@@ -248,22 +253,46 @@ $CcRegd	 	= $GHC_OPT_HILEV_ASM;
 #    those only for .c files;
 #    those only for .hc files
 
-@CcRegd_flags    = ('-ansi', '-D__STG_GCC_REGS__', '-D__STG_TAILJUMPS__');
-@CcRegd_flags_c	= ();
+@CcRegd_flags    = ();
+@CcRegd_flags_c	 = ();
 @CcRegd_flags_hc = ();
 
-$As	 	= ''; # "assembler" is normally GCC
-@As_flags	= ();
+$As	 	 = ''; # "assembler" is normally GCC
+@As_flags	 = ();
 
-$Lnkr	 	= ''; # "linker" is normally GCC
-@Ld_flags	= ();
+$Lnkr	 	 = ''; # "linker" is normally GCC
+@Ld_flags	 = ();
 
 # 'nm' is used for consistency checking (ToDo: mk-world-ify)
 # ToDo: check the OS or something ("alpha" is surely not the crucial question)
 $Nm = ($TargetPlatform =~ /^alpha-/) ? 'nm -B' : 'nm';
 \end{code}
 
+Warning packages that are controlled by -W and -Wall.  The 'standard'
+warnings that you get all the time are
+	
+	-fwarn-overlapping-patterns
+	-fwarn-missing-methods
+	-fwarn-duplicate-exports
+
+these are turned off by -Wnot.
+
+\begin{code}
+@StandardWarnings = ('-fwarn-overlapping-patterns', 
+		     '-fwarn-missing-methods',
+		     '-fwarn-duplicate-exports');
+@MinusWOpts    	  = (@StandardWarnings, 
+		     '-fwarn-incomplete-patterns', 
+		     '-fwarn-unused-binds',
+		     '-fwarn-unused-imports');
+@MinusWallOpts 	  = (@MinusWOpts, 
+		     '-fwarn-unused-matches',
+		     '-fwarn-name-shadowing',
+		     '-fwarn-missing-signatures');
+\end{code}
+
 What options \tr{-user-setup-a} turn into (user-defined ``packages''
+
 of options).  Note that a particular user-setup implies a particular
 Prelude ({\em including} its interface file(s)).
 \begin{code}
@@ -274,14 +303,8 @@ $BuildTag	= ''; # default is sequential build w/ Appel-style GC
 		   '_p',    "$WAY_p_NAME",
 		   '_t',    "$WAY_t_NAME",
 		   '_u',    "$WAY_u_NAME",
-		   '_mc',   "$WAY_mc_NAME",
-		   '_mr',   "$WAY_mr_NAME",
-		   '_mt',   "$WAY_mt_NAME",
 		   '_mp',   "$WAY_mp_NAME",
 		   '_mg',   "$WAY_mg_NAME",
-		   '_2s',   "$WAY_2s_NAME",
-		   '_1s',   "$WAY_1s_NAME",
-		   '_du',   "$WAY_du_NAME",
 		   # system ways end
 		   '_a',    "$WAY_a_NAME",
 		   '_b',    "$WAY_b_NAME",
@@ -327,83 +350,8 @@ $BuildTag	= ''; # default is sequential build w/ Appel-style GC
 	'_p',  "$WAY_p_HC_OPTS",
 	'_t',  "$WAY_t_HC_OPTS",
 	'_u',  "$WAY_u_HC_OPTS",
-	'_mc', "$WAY_mc_HC_OPTS",
-	'_mr', "$WAY_mr_HC_OPTS",
-	'_mt', "$WAY_mt_HC_OPTS",
 	'_mp', "$WAY_mp_HC_OPTS",
-	'_mg', "$WAY_mg_HC_OPTS",
-	'_2s', "$WAY_2s_HC_OPTS",
-	'_1s', "$WAY_1s_HC_OPTS",
-	'_du', "$WAY_B_HC_OPTS" );
-
-# per-build code fragments which are eval'd
-#%EvaldSetupOpts	= ('',	    '', # this one must *not* be set!
-
-#			    # profiled sequential
-#		   '_p',    'push(@HsC_flags,  \'-fscc-profiling\');
-#			     push(@CcBoth_flags, \'-DPROFILING\');',
-
-#			    #and maybe ...
-#			    #push(@CcBoth_flags, '-DPROFILING_DETAIL_COUNTS');
-
-#			    # ticky-ticky sequential
-#		   '_t',    'push(@HsC_flags, \'-fticky-ticky\');
-#			     push(@CcBoth_flags, \'-DTICKY_TICKY\');',
-
-##OLD:			    # unregisterized (ToDo????)
-##		   '_u',    '',
-
-#			    # concurrent
-#		   '_mc',   '$StkChkByPageFaultOK = 0;
-#			     push(@HsC_flags,  \'-fconcurrent\');
-#			     push(@HsCpp_flags,\'-D__CONCURRENT_HASKELL__\', \'-DCONCURRENT\');
-#			     push(@Cpp_define, \'-D__CONCURRENT_HASKELL__\', \'-DCONCURRENT\');',
-
-#			    # profiled concurrent
-#		   '_mr',   '$StkChkByPageFaultOK = 0;
-#			     push(@HsC_flags,  \'-fconcurrent\', \'-fscc-profiling\');
-#			     push(@HsCpp_flags,\'-D__CONCURRENT_HASKELL__\', \'-DCONCURRENT\');
-#			     push(@Cpp_define, \'-D__CONCURRENT_HASKELL__\', \'-DCONCURRENT\', \'-DPROFILING\');',
-
-#			    # ticky-ticky concurrent
-#		   '_mt',   '$StkChkByPageFaultOK = 0;
-#			     push(@HsC_flags,  \'-fconcurrent\', \'-fticky-ticky\');
-#			     push(@HsCpp_flags,\'-D__CONCURRENT_HASKELL__\', \'-DCONCURRENT\');
-#			     push(@Cpp_define, \'-D__CONCURRENT_HASKELL__\', \'-DCONCURRENT\', \'-DTICKY_TICKY\');',
-
-#			    # parallel
-#		   '_mp',   '$StkChkByPageFaultOK = 0;
-#			     push(@HsC_flags,  \'-fconcurrent\');
-#			     push(@HsCpp_flags,\'-D__PARALLEL_HASKELL__\',   \'-DPAR\');
-#			     push(@Cpp_define, \'-D__CONCURRENT_HASKELL__\', \'-DCONCURRENT\', \'-DPAR\');',
-
-#			    # GranSim
-#		   '_mg',   '$StkChkByPageFaultOK = 0;
-#			     push(@HsC_flags,  \'-fconcurrent\', \'-fgransim\');
-#			     push(@HsCpp_flags,\'-D__GRANSIM__\',   \'-DGRAN\');
-#			     push(@Cpp_define, \'-D__CONCURRENT_HASKELL__\', \'-DCONCURRENT\', \'-DGRAN\');',
-
-#		   '_2s',   'push (@CcBoth_flags, \'-DGC2s\');',
-#		   '_1s',   'push (@CcBoth_flags, \'-DGC1s\');',
-#		   '_du',   'push (@CcBoth_flags, \'-DGCdu\');',
-
-#		   '_a',    '', # these user-way guys should not be set!
-#		   '_b',    '',
-#		   '_c',    '',
-#		   '_d',    '',
-#		   '_e',    '',
-#		   '_f',    '',
-#		   '_g',    '',
-#		   '_h',    '',
-#		   '_i',    '',
-#		   '_j',    '',
-#		   '_k',    '',
-#		   '_l',    '',
-#		   '_m',    '',
-#		   '_n',    '',
-#		   '_o',    '',
-#		   '_A',    '',
-#		   '_B',    '' );
+	'_mg', "$WAY_mg_HC_OPTS");
 
 \end{code}
 
@@ -414,21 +362,26 @@ require special handling.
 @Import_dir	= ('.'); #-i things
 @Include_dir	= ('.'); #-I things; other default(s) stuck on AFTER option processing
 
-# where to look for interface files (system hi's, i.e., prelude and hslibs)
+# where to look for interface files (system hi's, i.e., prelude and syslibs)
 @SysImport_dir	= ( $INSTALLING )
-		    ? ( "$InstLibDirGhc/imports" )
-		    : ( "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/required"
-		      , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/ghc"
-		      , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/glaExts"
-		      , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/concurrent" );
+		    ? ( "$InstLibDirGhc/imports/std" )
+		    : ( "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std" );
 
 # We need to look in ghc/ and glaExts/ when searching for implicitly needed .hi files, but 
 # we should really *not* look there for explicitly imported modules.
 
-$GhcVersionInfo  = int ($PROJECTVERSION * 100);
 $Haskell1Version = 4; # i.e., Haskell 1.4
 @Cpp_define	 = ();
 
+# Cpp symbols defined when we're processing Haskell source.
+
+@HsSourceCppOpts = 
+	( "-D__HASKELL1__=$Haskell1Version"
+	, "-D__GLASGOW_HASKELL__=$ProjectVersionInt"
+	# not yet -- SDM
+	# , "-D__CONCURRENT_HASKELL__"
+	);
+
 @UserLibrary_dir= ();	#-L things;...
 @UserLibrary   	= ();	#-l things asked for by the user
 
@@ -436,22 +389,23 @@ $Haskell1Version = 4; # i.e., Haskell 1.4
 		    ? $InstLibDirGhc
 		    : ( "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR"
 		      , "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR/gmp"
-		      , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR"
-		      , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/cbits"
+		      , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std"
+		      , "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/std/cbits"
 		      )
 		  );
 @SysLibrary = (); # will be built up as we go along
 
 $TopClosureFile # defaults to 1.2 one; will be mangled later
-	= ( $INSTALLING)  ? "$InstLibDirGhc/TopClosureXXXX.o"
-			  : "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR/main/TopClosureXXXX.o";
+	= '';
+#	( $INSTALLING)  ? "$InstLibDirGhc/TopClosureXXXX.o"
+#			  : "$TopPwd/$CURRENT_DIR/$GHC_RUNTIME_DIR/main/TopClosureXXXX.o";
 
 # make depend for Haskell
 $MkDependHS
 	= ( $INSTALLING ) ? "$InstBinDirGhc/mkdependHS"
 			  : "$TopPwd/$CURRENT_DIR/$GHC_UTILS_DIR/mkdependHS/mkdependHS";
 # Fill in later
-@MkDependHS_flags = ( );
+@MkDependHS_flags = ();
 
 # do_link flag should not be reset while rescanning the cmd-line.
 $Do_lnkr    = 1;
@@ -484,14 +438,6 @@ $StolenX86Regs = 4; # **HACK*** of the very worst sort
 $CoreLint      = '';
 $StgLint       = '';
 
-@CcBoth_flags	= ('-S');   # flags for *any* C compilation
-@CcInjects	= ();
-
-# GCC flags: those for all files, those only for .c files; those only for .hc files
-@CcRegd_flags    = ('-ansi', '-D__STG_GCC_REGS__', '-D__STG_TAILJUMPS__');
-@CcRegd_flags_c	= ();
-@CcRegd_flags_hc = ();
-
 @Import_dir	= ('.'); #-i things
 @Include_dir	= ('.'); #-I things; other default(s) stuck on AFTER option processing
 
@@ -509,18 +455,21 @@ Here are the initial defaults applied to all files:
 \begin{code}
 $Cpp_flag_set = 0;	  # (hack)
 $Only_preprocess_C = 0;	  # pretty hackish
-$Only_generate_deps = 0;  #
+$Only_preprocess_hc = 0;  # ditto
+$Only_generate_deps = 0;  # "
 $PostprocessCcOutput = 0;
 
 # native code-gen or via C?
 $HaveNativeCodeGen = $GhcWithNativeCodeGen;
 $HscOut = '-C='; # '-C=' ==> .hc output; '-S=' ==> .s output; '-N=' ==> neither
 $HscOut = '-S='
-    if $HaveNativeCodeGen && $TargetPlatform =~ /^(alpha|sparc)-/;
-# TEMP: disable x86  if $HaveNativeCodeGen && $TargetPlatform =~ /^(i386|alpha|sparc)-/;
-$ProduceHi   = '-hifile=';
-$HiOnStdout  = 0;
-$HiDiff_flag = '';
+    if $HaveNativeCodeGen && $TargetPlatform =~ /^(alpha)-/;
+# TEMP: disable x86 & Sparc if $HaveNativeCodeGen && $TargetPlatform =~ /^(i386|alpha|sparc)-/;
+$ProduceHi    = '-hifile=';
+$HiOnStdout   = 0;
+$HiWith       = '';
+$HiDiff_flag  = '';
+$Keep_HiDiffs = 0;
 
 $CollectingGCstats = 0;
 $CollectGhcTimings = 0;
@@ -533,9 +482,7 @@ $PROFignore_scc = '';	# set to relevant parser flag if explicit sccs ignored
 $UNPROFscc_auto = '';	# set to relevant hsc flag if forcing auto sccs without profiling
 $TICKYing = '';    	# set to t if compiling for ticky-ticky profiling
 $PARing = '';		# set to p if compiling for PAR
-$CONCURing = '';    	# set to c if compiling for CONCURRENT
 $GRANing = '';		# set to g if compiling for GRAN
-$StkChkByPageFaultOK = 1; # may be set to 0 (false) for some builds
 $Specific_hi_file = '';		# set by -ohi <file>; "-" for stdout
 $Specific_dump_file = '';	# set by -odump <file>; "-" for stdout
 $Using_dump_file = 0;
@@ -556,7 +503,9 @@ $Dump_parser_output = 0;
 $Dump_raw_asm = 0;
 $Dump_asm_splitting_info = 0;
 $NoImplicitPrelude = 0;
-
+# 1 => don't tell the linker to hoist in PrelMain.Main, as an 
+# external main is provided instead.
+$NoHaskellMain=0;
 
 } # end of initDriverGlobals (Sigh)
 
@@ -584,14 +533,14 @@ linking.)  The checking is done by introducing/munging
 \tr{what(1)}-style strings.  Anyway, here are the relevant global
 variables and their defaults:
 \begin{code}
-$LinkChk = 1;	# set to 0 if the link check should *not* be done
+$LinkChk = 0;	# set to 0 if the link check should *not* be done
 
 # major & minor version numbers; major numbers must always agree;
 # minor disagreements yield a warning.
-$HsC_major_version = 32;
-$HsC_minor_version = 0;
-$Cc_major_version  = 36;
-$Cc_minor_version  = 1;
+$HsC_major_version = $HscMajorVersion;
+$HsC_minor_version = $HscMinorVersion;
+$Cc_major_version  = $CcMajorVersion;
+$Cc_minor_version  = $CcMinorVersion;
 
 # options: these must always agree
 $HsC_consist_options = '';    # we record, in this order:
@@ -609,37 +558,6 @@ $Cc_consist_options  = '';    # we record, in this order:
 Now slurp through the arguments.
 \begin{code}
 
-#---------- user defined prelude ---------------------------------------
-
-if (grep(/^-user-prelude$/, @ARGV)) {
-
-    # If ARGV contains -user-prelude we are compiling a piece of 
-    # prelude for the user, probably with additional specialise pragmas
-
-    # We strip out the -O -f and -user-prelude flags provided on
-    # the command line and add the ones used to compile the prelude
-    # ToDo: get these options from a common definition in mkworld
-
-    # We also enable any options forced through with -user-prelude-force
-
-    # Hey, Check out this grep statement ;-)  (PS)
-
-    @ARGV = grep((!/^-O/ && !/^-f/ && !/^-user-prelude$/) || s/^-user-prelude-force//,
-		 @ARGV);
-
-    unshift(@ARGV,
-	'-fcompiling-ghc-internals=???', # ToDo!!!!
-        '-O',
-        '-fshow-pragma-name-errs',
-        '-fshow-import-specs',
-        '-fglasgow-exts',
-        '-genSPECS',
-        '-DUSE_FOLDR_BUILD',
-	'-dcore-lint');
-
-    print STDERR "ghc: -user-prelude options:\n", "@ARGV", "\n";
-}
-
 &initDriverGlobals();
 &splitCmdLine(@ARGV);
 # Run through the cmd-line first time.
@@ -651,7 +569,11 @@ if (  $Status == 0 && $Only_generate_deps ) {
 
     push (@MkDependHS_flags, "-o$Osuffix") if $Osuffix;
     push (@MkDependHS_flags, "-s$BuildTag") if $BuildTag;
-    local($to_do) = "$MkDependHS @MkDependHS_flags -- @Cmd_opts -- @Input_file" ;
+    # They're not (currently) needed, but we need to quote any -#include options
+    foreach (@Cmd_opts) {
+    	s/-#include.*$/'$&'/g;
+    };
+    local($to_do) = "$MkDependHS @MkDependHS_flags @HsSourceCppOpts -- @Cmd_opts -- @Input_file" ;
     &run_something($to_do, 'Haskell dependencies');
     exit $Status;
 }
@@ -755,11 +677,12 @@ sub setupOptimiseFlags {
 
    @HsC_minusNoO_flags 
     = (	'-fsimplify',
-	  '\(',
+	  '[',
 	  $Oopt_FB_Support,
 	  '-ffloat-lets-exposing-whnf',
 	  '-ffloat-primops-ok',
 	  '-fcase-of-case',
+	  '-fdo-case-elim',
 #	  '-fdo-lambda-eta-expansion',	# too complicated
 	  '-freuse-con',
 #	  '-flet-to-case',		# no strictness analysis, so...
@@ -774,9 +697,22 @@ sub setupOptimiseFlags {
 #	  '-fsimpl-uf-use-threshold0',
 #	  '-fessential-unfoldings-only',
 
-	  $Oopt_UnfoldingUseThreshold,
+	  #
+	  # The presence of -fclone-binds is *temporary* to work around
+          # the fact that the desugarer in 3.0{2.3} does generate
+	  # bindings with identical ids, and the type checker doesn't perform
+	  # properly cloned type substitutions. Instead, we make sure that all 
+	  # binders are cloned first time through the simplifier.
+          #
+	  # Will be properly fixed in the `new compiler` I hear, at which point
+	  # the cloning can be turned off here.
+	  #
+          # Let's find out..
+          #'-fclone-binds',
+
 	  $Oopt_MaxSimplifierIterations,
-	  '\)',
+	  $Oopt_ShowSimplifierProgress,
+	  ']',
 	$Oopt_AddAutoSccs,
 #	'-ffull-laziness',	# removed 95/04 WDP following Andr\'e's lead
 	
@@ -789,7 +725,7 @@ sub setupOptimiseFlags {
 
 	# initial simplify: mk specialiser happy: minimum effort please
 	'-fsimplify',
-	  '\(', 
+	  '[', 
 	  $Oopt_FB_Support,
 	  '-fkeep-spec-pragma-ids',	# required before specialisation
 
@@ -804,23 +740,34 @@ sub setupOptimiseFlags {
 #	f  = E
 #	g* = f
 #	...f...
-# The g=f will get reverse-substituted later, but it's untidy.
+# The g=f will get reverse-substituted later, but it's untidy. --SLPJ
 #
-#	  '-fessential-unfoldings-only',
-#	  '-fsimpl-uf-use-threshold0',
+# SDM: Here's why it's necessary.
+#
+#   If we unfold in the first pass before the specialiser is run
+#   we miss opportunities for specialisation because eg. wrappers
+#   have been inlined for specialisable functions.  
+#
+#   This shows up in PrelArr.lhs - the specialised instance for newArray 
+#   calls the generic rangeSize, because rangeSize is strict and is
+#   replaced by its wrapper by the simplifier.
+
+	  '-fessential-unfoldings-only',
+	  '-fsimpl-uf-use-threshold0',
+
+	  # See remark re: cloning in defn of minusnotO
+	  '-fclone-binds',
 
 	  '-fmax-simplifier-iterations1',
 	  $Oopt_PedanticBottoms,
-	  '\)',
+	  ']',
 
 	($Oopt_DoSpecialise) ? (
-	  '-fspecialise-overloaded',
-	  $Oopt_SpecialiseUnboxed,
 	  $Oopt_DoSpecialise,
 	) : (),
 
-	'-fsimplify', 			# need dependency anal after specialiser ...
-	  '\(', 			# need tossing before calc-inlinings ...
+	'-fsimplify', 		# need dependency anal after specialiser ...
+	  '[', 			# need tossing before calc-inlinings ...
 	  $Oopt_FB_Support,
 	  '-ffloat-lets-exposing-whnf',
 	  '-ffloat-primops-ok',
@@ -832,17 +779,24 @@ sub setupOptimiseFlags {
 	  '-freuse-con',
 	  $Oopt_PedanticBottoms,
 	  $Oopt_MonadEtaExpansion,
-	  $Oopt_UnfoldingUseThreshold,
 	  $Oopt_MaxSimplifierIterations,
-	  '\)',
-
-#LATER:	'-fcalc-inlinings1', -- pointless for 2.01
+	  $Oopt_ShowSimplifierProgress,
+	  #
+	  # The presence of -fclone-binds is *crucial* here as
+	  # -ffull-laziness (which we're about to do next) floats
+	  # bindings outwards, so we better make sure that this
+	  # doesn't result in the floating out of bindings
+	  # with identical uniques, i.e., -ffull-laziness needs
+	  # to be preceeded by a simplifier pass with -fclone-binds
+	  # set.
+          '-fclone-binds',
+	  ']',
 
 #	($Oopt_FoldrBuildWW) ? (
 #		'-ffoldr-build-ww-anal',
 #		'-ffoldr-build-worker-wrapper',
 #		'-fsimplify', 
-#		  '\(', 
+#		  '[', 
 #		  $Oopt_FB_Support,
 #		  '-ffloat-lets-exposing-whnf',
 #		  '-ffloat-primops-ok',
@@ -854,9 +808,9 @@ sub setupOptimiseFlags {
 #		  '-freuse-con',
 #		  $Oopt_PedanticBottoms,
 #		  $Oopt_MonadEtaExpansion,
-#		  $Oopt_UnfoldingUseThreshold,
 #		  $Oopt_MaxSimplifierIterations,
-#		  '\)',
+#		  $Oopt_ShowSimplifierProgress,
+#		  ']',
 #	 ) : (),
 
 	# this pass-ordering sequence was agreed by Simon and Andr\'e
@@ -867,7 +821,7 @@ sub setupOptimiseFlags {
 	  '-ffoldr-build-on',		# desugar list comprehensions for foldr/build
 
 	  '-fsimplify', 
-	    '\(', 
+	    '[', 
 	    '-fignore-inline-pragma',	# **** NB!
 	    '-fdo-foldr-build',		# NB
 	    $Oopt_FB_Support,
@@ -881,15 +835,15 @@ sub setupOptimiseFlags {
 	    '-freuse-con',
 	    $Oopt_PedanticBottoms,
 	    $Oopt_MonadEtaExpansion,
-	    $Oopt_UnfoldingUseThreshold,
 	    $Oopt_MaxSimplifierIterations,
-	    '\)',
+	    $Oopt_ShowSimplifierProgress,
+	    ']',
 	) : (),
 
 	'-ffloat-inwards',
 
 	'-fsimplify',
-	  '\(', 
+	  '[', 
 	  $Oopt_FB_Support,
 	  '-ffloat-lets-exposing-whnf',
 	  '-ffloat-primops-ok',
@@ -905,14 +859,14 @@ sub setupOptimiseFlags {
 			# but do reductions if you see them!
 	  $Oopt_PedanticBottoms,
 	  $Oopt_MonadEtaExpansion,
-	  $Oopt_UnfoldingUseThreshold,
 	  $Oopt_MaxSimplifierIterations,
-	  '\)',
+	  $Oopt_ShowSimplifierProgress,
+	  ']',
 
 	'-fstrictness',
 
 	'-fsimplify',
-	  '\(', 
+	  '[', 
 	  $Oopt_FB_Support,
 	  '-ffloat-lets-exposing-whnf',
 	  '-ffloat-primops-ok',
@@ -925,9 +879,9 @@ sub setupOptimiseFlags {
 	  '-flet-to-case',		# Aha! Only done after strictness analysis
 	  $Oopt_PedanticBottoms,
 	  $Oopt_MonadEtaExpansion,
-	  $Oopt_UnfoldingUseThreshold,
 	  $Oopt_MaxSimplifierIterations,
-	  '\)',
+	  $Oopt_ShowSimplifierProgress,
+	  ']',
 
 	'-ffloat-inwards',
 
@@ -936,12 +890,12 @@ sub setupOptimiseFlags {
 
 #	( ($OptLevel != 2)
 #        ? ''
-#	: "-fliberate-case -fsimplify \\( $Oopt_FB_Support -ffloat-lets-exposing-whnf -ffloat-primops-ok -fcase-of-case -fdo-case-elim -fcase-merge -fdo-eta-reduction -fdo-lambda-eta-expansion -freuse-con -flet-to-case $Oopt_PedanticBottoms $Oopt_MonadEtaExpansion $Oopt_UnfoldingUseThreshold $Oopt_MaxSimplifierIterations \\)" ),
+#	: "-fliberate-case -fsimplify [ $Oopt_FB_Support -ffloat-lets-exposing-whnf -ffloat-primops-ok -fcase-of-case -fdo-case-elim -fcase-merge -fdo-eta-reduction -fdo-lambda-eta-expansion -freuse-con -flet-to-case $Oopt_PedanticBottoms $Oopt_MonadEtaExpansion $Oopt_MaxSimplifierIterations $Oopt_ShowSimplifierProgress ]" ),
 
 # Final clean-up simplification:
 
 	'-fsimplify',
-	  '\(', 
+	  '[', 
 	  $Oopt_FB_Support,
 	  '-ffloat-lets-exposing-whnf',
 	  '-ffloat-primops-ok',
@@ -958,16 +912,15 @@ sub setupOptimiseFlags {
 			# but still do reductions if you see them!
 	  $Oopt_PedanticBottoms,
 	  $Oopt_MonadEtaExpansion,
-	  $Oopt_UnfoldingUseThreshold,
 	  $Oopt_MaxSimplifierIterations,
-	  '\)',
+	  $Oopt_ShowSimplifierProgress,
+	  ']',
 
       #	'-fstatic-args',
 
 #LATER:	'-fcalc-inlinings2', -- pointless for 2.01
 
       # stg2stg passes
-	'-fupdate-analysis',
 	'-flambda-lift',
 	$Oopt_FinalStgProfilingMassage,
 	$Oopt_StgStats,
@@ -977,6 +930,7 @@ sub setupOptimiseFlags {
 
       # SPECIAL FLAGS for -O2
 	($OptLevel == 2) ? (
+	  '-fupdate-analysis',	# virtually useless; relegated to -O2
 	  '-fsemi-tagging',
 	) : (),
       );
@@ -1007,6 +961,8 @@ if ( $OptLevel <= 0 ) {
 } else { # -Ofile, then...
 
     &add_Hsc_flags( @HsC_minusO3_flags );
+    push(@HsC_flags, $Oopt_FinalStgProfilingMassage) if $Oopt_FinalStgProfilingMassage;
+
     push(@CcBoth_flags, ($MinusO2ForC) ? '-O2' : '-O');	# possibly to be elaborated...
 }
 
@@ -1020,7 +976,7 @@ if ( $OptLevel <= 0 ) {
 %*									*
 %************************************************************************
 
-Sort out @$BuildTag@, @$PROFing@, @$CONCURing@, @$PARing@,
+Sort out @$BuildTag@, @$PROFing@, @$PARing@,
 @$GRANing@, @$TICKYing@:
 \begin{code}
 sub setupBuildFlags {
@@ -1041,19 +997,13 @@ sub setupBuildFlags {
 
       $Oopt_FinalStgProfilingMassage = '-fmassage-stg-for-profiling';
 
-      push(@HsP_flags, (($PROFignore_scc) ? $PROFignore_scc : '-S'));
+      # Ignore user sccs when auto annotating, but warn when doing so.
+      $PROFignore_scc = '-W' if $PROFauto; 
 
-      if ( $SplitObjFiles ) {
-	 # can't split with cost centres -- would need global and externs
-    	 print STDERR "$Pgm: WARNING: splitting objects when profiling will *BREAK* if any _scc_s are present!\n";
-	 # (but it's fine if there aren't any _scc_s around...)
-#	 $SplitObjFiles = 0; # unset
-	 #not an error: for now: $Status++;
-      }
+      push(@HsP_flags, (($PROFignore_scc) ? $PROFignore_scc : '-S'));
   }
   #if ( $BuildTag ne '' ) {
   #    local($b) = $BuildDescr{$BuildTag};
-  #    if ($CONCURing eq 'c') { print STDERR "$Pgm: Can't mix $b with -concurrent.\n"; exit 1; }
   #    if ($PARing    eq 'p') { print STDERR "$Pgm: Can't mix $b with -parallel.\n"; exit 1; }
   #    if ($GRANing   eq 'g') { print STDERR "$Pgm: Can't mix $b with -gransim.\n"; exit 1; }
   #    if ($TICKYing  eq 't') { print STDERR "$Pgm: Can't mix $b with -ticky.\n"; exit 1; }
@@ -1066,13 +1016,7 @@ sub setupBuildFlags {
       if ($PARing   eq 'p') { print STDERR "$Pgm: Can't do profiling with -parallel.\n"; exit 1; }
       if ($GRANing  eq 'g') { print STDERR "$Pgm: Can't do profiling with -gransim.\n"; exit 1; }
       if ($TICKYing eq 't') { print STDERR "$Pgm: Can't do profiling with -ticky.\n"; exit 1; }
-      $BuildTag = ($CONCURing eq 'c') ? '_mr' : '_p' ; # possibly "profiled concurrent"...
-
-  } elsif ( $CONCURing eq 'c' ) {
-      if ($PARing  eq 'p') { print STDERR "$Pgm: Can't mix -concurrent with -parallel.\n"; exit 1; }
-      if ($GRANing eq 'g') { print STDERR "$Pgm: Can't mix -concurrent with -gransim.\n"; exit 1; }
-      $BuildTag = ($TICKYing eq 't')  ? '_mt' : '_mc' ; # possibly "ticky concurrent"...
-      # "profiled concurrent" already acct'd for...
+      $BuildTag = '_p' ;
 
   } elsif ( $PARing eq 'p' ) {
       if ($GRANing  eq 'g') { print STDERR "$Pgm: Can't mix -parallel with -gransim.\n"; exit 1; }
@@ -1123,9 +1067,6 @@ Decide what the consistency-checking options are in force for this run:
        $Tag = "${Tag}_" if $Tag ne '';
        $HiSuffix_prelude="${Tag}hi";
   }
-  #push(@HsC_flags, "-hisuf-prelude=.${HiSuffix_prelude}"); # use appropriate Prelude .hi files
-  #push(@HsC_flags, "-hisuf=.${HiSuffix}");
-
 } # setupBuildFlags
 \end{code}
 
@@ -1145,14 +1086,9 @@ Note: a few ``always apply'' flags were set at the very beginning.
 sub setupMachOpts {
 
   if ($TargetPlatform =~ /^alpha-/) {
-      # we know how to *mangle* asm for alpha
-      unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
-      unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK;
       unshift(@CcBoth_flags,  ('-static'));
 
   } elsif ($TargetPlatform =~ /^hppa/) {
-      # we know how to *mangle* asm for hppa
-      unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
       unshift(@CcBoth_flags,  ('-static'));
       #
       # We don't put in '-mlong-calls', because it's only
@@ -1167,13 +1103,6 @@ sub setupMachOpts {
         # (very nice, but too bad the HP /usr/include files don't agree.)
 
   } elsif ($TargetPlatform =~ /^i386-/) {
-      # we know how to *mangle* asm for X86
-      unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
-      unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK && $TargetPlatform !~ /nextstep/;
-      # I do not know how to do STACK_CHECK_BY_PAGE_FAULT
-      # on NeXTs (my fault, not theirs), so I don't.
-      # CaS
-
       # -fno-defer-pop : basically the same game as for m68k
       #
       # -fomit-frame-pointer : *must* ; because we're stealing
@@ -1185,13 +1114,6 @@ sub setupMachOpts {
       unshift(@CcRegd_flags,    "-DSTOLEN_X86_REGS=$StolenX86Regs");
 
   } elsif ($TargetPlatform =~ /^m68k-/) {
-      # we know how to *mangle* asm for m68k
-      unshift (@CcRegd_flags, ('-D__STG_REV_TBLS__'));
-      unshift (@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK && $TargetPlatform !~ /nextstep/;
-      # I do not know how to do STACK_CHECK_BY_PAGE_FAULT
-      # on NeXTs (my fault, not theirs), so I don't.
-      # CaS
-
       # -fno-defer-pop : for the .hc files, we want all the pushing/
       #    popping of args to routines to be explicit; if we let things
       #    be deferred 'til after an STGJUMP, imminent death is certain!
@@ -1208,29 +1130,33 @@ sub setupMachOpts {
 	# also: -fno-defer-pop is not sufficiently well-behaved without it
 
   } elsif ($TargetPlatform =~ /^mips-/) {
-      # we (hope to) know how to *mangle* asm for MIPSen
-      unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
-      unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK;
       unshift(@CcBoth_flags,  ('-static'));
 
-  } elsif ($TargetPlatform =~ /^powerpc-/) {
-      # we know how to *mangle* asm for PowerPC
-# :-(   unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
-      unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK;
+  } elsif ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
       unshift(@CcBoth_flags,  ('-static')); # always easier to start with
       unshift(@CcRegd_flags, ('-finhibit-size-directive')); # avoids traceback tables
-#      unshift(@Ld_flags, ('-Xlinker -bbigtoc -Xlinker -bnoquiet')); # we have lots of toc entries..
-      unshift(@Ld_flags, ('-Xlinker -bbigtoc')); # we have lots of toc entries...
-
   } elsif ($TargetPlatform =~ /^sparc-/) {
-      # we know how to *mangle* asm for SPARC
-      unshift(@CcRegd_flags, ('-D__STG_REV_TBLS__'));
-      unshift(@CcRegd_flags, ('-DSTACK_CHECK_BY_PAGE_FAULT=1')) if $StkChkByPageFaultOK;
-
   }
 } # end of setupMachOpts
 \end{code}
 
+%************************************************************************
+%*									*
+\subsection{Set up for warnings}
+%*									*
+%************************************************************************
+
+Several warnings are turned on by default.  These are supposed to be
+the 'I'm pretty sure you've made a mistake here' kind of warnings.
+The rest are turned on by the -W and -Wall options, or individually
+via their -fwarn and -fno-warn flags.
+
+\begin{code}
+sub setupWarningFlags {
+&add_Hsc_flags( @StandardWarnings );
+}
+\end{code}
+
 Same unshifting magic, but for special linker flags.
 
 The configure script determines whether the object file symbol tables
@@ -1244,16 +1170,39 @@ sub setupLinkOpts {
 
   unshift(@Ld_flags,
         (($Ld_main) ? ( '-u', "${uscore}Main_" . $Ld_main . '_closure' ) : ()));
+
+  # things that are referenced by the RTS - make sure that we pull 'em in
   unshift(@Ld_flags,
-	(  '-u', "${uscore}PrelBase_Z91Z93_closure"	 # i.e., []
-          ,'-u', "${uscore}PrelBase_IZh_static_info"
+         ( '-u', "${uscore}PrelBase_IZh_static_info"
           ,'-u', "${uscore}PrelBase_CZh_static_info"
-          ,'-u', "${uscore}PrelBase_False_inregs_info"
-          ,'-u', "${uscore}PrelBase_True_inregs_info"
-	  ,'-u', "${uscore}STBase_SZh_static_info"
-          ,'-u', "${uscore}DEBUG_REGS"
+          ,'-u', "${uscore}PrelBase_FZh_static_info"
+          ,'-u', "${uscore}PrelBase_DZh_static_info"
+          ,'-u', "${uscore}PrelAddr_AZh_static_info"
+          ,'-u', "${uscore}PrelAddr_WZh_static_info"
+          ,'-u', "${uscore}PrelAddr_I64Zh_static_info"
+          ,'-u', "${uscore}PrelAddr_W64Zh_static_info"
+          ,'-u', "${uscore}PrelForeign_StablePtr_static_info"
+	  ,'-u', "${uscore}PrelBase_IZh_con_info"
+          ,'-u', "${uscore}PrelBase_CZh_con_info"
+          ,'-u', "${uscore}PrelBase_FZh_con_info"
+          ,'-u', "${uscore}PrelBase_DZh_con_info"
+          ,'-u', "${uscore}PrelAddr_AZh_con_info"
+          ,'-u', "${uscore}PrelAddr_WZh_con_info"
+          ,'-u', "${uscore}PrelAddr_I64Zh_con_info"
+          ,'-u', "${uscore}PrelAddr_W64Zh_con_info"
+          ,'-u', "${uscore}PrelForeign_StablePtr_con_info"
+          ,'-u', "${uscore}PrelBase_False_static_closure"
+          ,'-u', "${uscore}PrelBase_True_static_closure"
+          ,'-u', "${uscore}PrelPack_unpackCString_closure"
 	));
-
+  if (!$NoHaskellMain) {
+   unshift (@Ld_flags,'-u', "${uscore}PrelMain_mainIO_closure");
+  }
+  if ($TargetPlatform =~ /^powerpc-|^rs6000-/) {
+    # sometimes we have lots of toc entries...
+    #  unshift(@Ld_flags, ('-Xlinker -bbigtoc -Xlinker -bnoquiet')); 
+    unshift(@Ld_flags, ('-Xlinker -bbigtoc')); 
+  }
 
 } # end of setupLinkOpts
 
@@ -1291,23 +1240,20 @@ sub setupSyslibs {
       $f .= $BuildTag if $f =~ /^-lHS/;
   }
 
-  # fiddle the TopClosure file name...
-  $TopClosureFile =~ s/XXXX//;
-
   # Push library HSrts, plus boring clib bit
   push(@SysLibrary, "-lHSrts${BuildTag}");
-  push(@SysLibrary, '-lHSclib');
+
   #
   # RTS compiled with cygwin32, uses the WinMM API
   # to implement the itimers, since cygwin.dll does not
   # support it. Only reqd. for `ways' that use itimers.
   #
-  push(@SysLibrary, '-lwinmm') if $BuildTag ne '' && $TargetPlatform eq 'i386-unknown-cygwin32';
+  push(@SysLibrary, '-lwinmm') if $TargetPlatform eq 'i386-unknown-cygwin32';
 
   # Push the pvm libraries
   if ($BuildTag eq '_mp') {
       $pvmlib = "$ENV{'PVM_ROOT'}/lib/$ENV{'PVM_ARCH'}";
-      push(@SysLibrary, "-L$pvmlib", '-lpvm3', '-lgpvm3');
+      push(@SysLibrary, "-L$pvmlib", '-lgpvm3', '-lpvm3');
       if ( $ENV{'PVM_ARCH'} eq 'SUNMP' ) {
           push(@SysLibrary, '-lthread', '-lsocket', '-lnsl');
       } elsif ( $ENV{'PVM_ARCH'} eq 'SUN4SOL2' ) {
@@ -1316,7 +1262,16 @@ sub setupSyslibs {
   }
 
 # Push the GNU multi-precision arith lib; and the math library
-push(@SysLibrary, '-lgmp');
+
+# If this machine has GMP already installed, then we'll get the installed
+# lib here, because presumably the one in the tree won't have been built.
+
+if ($LibGmp eq 'not-installed') {
+  push(@SysLibrary, "-lgmp");
+} else {
+  push(@SysLibrary, "-l$LibGmp");
+}
+
 push(@SysLibrary, '-lm');
 \end{code}
 
@@ -1368,8 +1323,8 @@ if ($#Input_file < 0 && $#Link_file < 0) {
     @Input_file = ( '-' );
 
     open(INF, "> $Tmp_prefix.hs") || &tidy_up_and_die(1,"Can't open $Tmp_prefix.hs\n");
-    print STDERR "Enter your Haskell program, end with ^D (on a line of its own):\n";
-    while (<>) { print INF $_; }
+    print STDERR "Enter your Haskell program, end with ^D (on a line of its own):\n" if -t;
+    while (<STDIN>) { print INF $_; }
     close(INF) || &tidy_up_and_die(1,"Failed writing to $Tmp_prefix.hs\n");
 }
 
@@ -1377,7 +1332,7 @@ if ($#Input_file < 0 && $#Link_file < 0) {
 
 Tell the world who we are, if they asked.
 \begin{code}
-print STDERR "${PROJECTNAME}, version ${PROJECTVERSION}, patchlevel ${PROJECTPATCHLEVEL}\n"
+print STDERR "${ProjectName}, version ${ProjectVersion}, patchlevel ${ProjectPatchLevel}\n"
     if $Verbose;
 \end{code}
 
@@ -1420,8 +1375,14 @@ if ($Do_lnkr) {
     # for a linker, use an explicitly given one, or the going C compiler ...
     local($lnkr) = ( $Lnkr ) ? $Lnkr : $CcRegd;
 
+    if ( ($Specific_output_file eq '') && 
+         ($TargetPlatform eq 'i386-unknown-cygwin32') ) {
+         $Specific_output_file = 'main.exe';
+         print STDERR "Output file not specified, defaulting to \"main.exe\"\n";
+    }
+
     local($output) = ($Specific_output_file ne '') ? "-o $Specific_output_file" : '';
-    @Files_to_tidy = ($Specific_output_file ne '') ? $Specific_output_file : 'a.out';
+    @Files_to_tidy = ($Specific_output_file ne '') ? $Specific_output_file : 'a.out'; 
 
     local($to_do) = "$lnkr $Verbose @Ld_flags $output @Link_file $TopClosureFile $libdirs @UserLibrary @SysLibrary";
     &run_something($to_do, 'Linker');
@@ -1468,7 +1429,7 @@ eval 'exec perl -S \$0 \${1+"\$@"}'
   if \$running_under_some_shell;
 # =!=!=!=!=!=!=!=!=!=!=!
 # This script is automatically generated: DO NOT EDIT!!!
-# Generated by Glasgow Haskell, version ${PROJECTVERSION} ${PROJECTPATCHLEVEL}
+# Generated by Glasgow Haskell, version ${ProjectVersion} ${ProjectPatchLevel}
 #
 \$pvm_executable      = '$pvm_executable';
 \$pvm_executable_base = '$pvm_executable_base';
@@ -1537,6 +1498,8 @@ sub ProcessInputFile {
 			  # from input file (need to know for recomp
 			  # checking purposes)
     local($hifile_target);# ditto (but .hi file)
+    local($ofile_c_stub_target); 
+    local($ofile_h_stub_target); 
 \end{code}
 
 Handle the weirdity of input from stdin.
@@ -1551,6 +1514,8 @@ Handle the weirdity of input from stdin.
 			? $Specific_hi_file
 			: "$ifile_root.$HiSuffix"; # ToDo: odirify?
 			# NB: may change if $ifile_root isn't module name (??)
+	($ofile_c_stub_target = $ifile) =~s/\.[^\.\/]+$/_stub.c/;
+	($ofile_h_stub_target = $ifile) =~s/\.[^\.\/]+$/_stub.h/;
     } else {
 	$ifile = "$Tmp_prefix.hs"; # we know that's where we put the input
 	$ifile_root   = '_stdin';
@@ -1590,7 +1555,7 @@ Again, we'll do the post-recompilation-checker parts of this later.
     local($is_hc_file) = 1; #Is the C code .hc or .c? Assume .hc for now
 
     # OK, let's strip off some literate junk..
-    if ($ifile =~ /\.lhs$/) {
+    if ($do_lit2pgm) {
         &runLit2pgm($in_lit2pgm, $lit2pgm_hscpp)
     } else {
         $lit2pgm_hscpp = $ifile;
@@ -1601,7 +1566,8 @@ Again, we'll do the post-recompilation-checker parts of this later.
 
     # Scan the top of the de-litted file for {-# OPTIONS #-} pragmas
     &check_for_source_options($lit2pgm_hscpp,$ifile);
-    # options found in the source file take a back seat, i.e., we scan
+
+    # Options found in the source file take a back seat, i.e., we scan
     # them first. Only process the command line again if source file
     # contained anything of interest *or* there's more than one
     # input file (we have to reset the options).
@@ -1627,6 +1593,7 @@ Again, we'll do the post-recompilation-checker parts of this later.
     &setupOptimiseFlags();
     &setupMachOpts();
     &setupIncPaths();
+    &setupWarningFlags();
     &setupHeapStackSize();
 
     #
@@ -1639,17 +1606,28 @@ Again, we'll do the post-recompilation-checker parts of this later.
 			  ? $Do_cc
 			  : ( ($HscOut eq '-C=') ? 1 : 0 );
     local($do_as)	= $Do_as;
-    local($hsc_out)	  = ( $HscOut eq '-C=' ) ? "$Tmp_prefix.hc" : "$Tmp_prefix.s" ;
+    local($hsc_out)	   = ( $HscOut eq '-C=' ) ? "$Tmp_prefix.hc" : "$Tmp_prefix.s" ;
+    local($hsc_out_c_stub) = ( $HscOut eq '-C=' ) ? "${Tmp_prefix}_stb.c" : "";
+    local($hsc_out_h_stub) = ( $HscOut eq '-C=' ) ? "${Tmp_prefix}_stb.h" : "";
 
-    if ($ifile =~ /.lhs$/ || $ifile =~ /.hs$/ ) {
+    if ($Only_preprocess_hc) { # stop after having run $Cc -E
+       $do_as=0;
+    }
+    if ($Only_preprocess_C)     { # stop after having run $hscpp
+       $do_hsc=0; $do_cc = 0; $do_as=0;
+    } elsif ($ifile =~ /.lhs$/ || $ifile =~ /.hs$/ ) {
        ;
     } elsif ($ifile =~ /\.hc$/ || $ifile =~ /_hc$/ ) { # || $ifile =~ /\.$Isuffix$/o) # ToDo: better
     	$do_hscpp = 0; $do_hsc = 0; $do_cc = 1;
 	$hsc_out = $ifile;
+	$hsc_out_c_stub = '';
+	$hsc_out_h_stub = '';
     } elsif ($ifile =~ /\.c$/) {
     	$do_hscpp = 0; $do_hsc = 0; $do_cc = 1;
 	$hsc_out = $ifile; $is_hc_file = 0;
-    } elsif ($ifile =~ /\.s$/) {
+	$hsc_out_c_stub = '';
+	$hsc_out_h_stub = '';
+    } elsif ($ifile =~ /\.[sS]$/) {
     	$do_hscpp = 0; $do_hsc = 0; $do_cc = 0;
 	$cc_as = $ifile;    
     } else { # don't know what it is, but nothing to do herein...
@@ -1659,16 +1637,16 @@ Again, we'll do the post-recompilation-checker parts of this later.
     # hack to avoid running hscpp
     $HsCpp = $Cat if ! $Cpp_flag_set;
 
-    &runHscpp($in_lit2pgm, $lit2pgm_hscpp, $hscpp_hsc)
-	if $do_hscpp;
+    &runHscpp($in_lit2pgm, $lit2pgm_hscpp, $hscpp_hsc) if $do_hscpp;
+
 \end{code}
 
 We now think about whether to run hsc/cc or not (when hsc produces .s
 stuff, it effectively takes the place of both phases).
-
 To get the output file name right: for each phase that we are {\em
 not} going to run, set its input (i.e., the output of its preceding
 phase) to @"$ifile_root.<suffix>"@.
+
 \begin{code}
     local($going_interactive) = $HscOut eq '-N=' || $ifile_root eq '_stdin';
 
@@ -1677,7 +1655,7 @@ phase) to @"$ifile_root.<suffix>"@.
     # -fvia-C (or the equivalent)
     #
     if ( $HscOut ne '-C=' && $Keep_hc_file_too ) {
-	print STDERR "Warning: Native code generator to be used, -keep-hc-file-too will be ignored\n";
+	print STDERR "$Pgm: warning: Native code generator to be used, -keep-hc-file-too will be ignored\n";
     }
 
     if (! $do_cc && ! $do_as) { # stopping after hsc
@@ -1691,7 +1669,7 @@ phase) to @"$ifile_root.<suffix>"@.
     if (! $do_as) { # stopping after gcc (or hsc)
 	$cc_as = ($Specific_output_file ne '')
 		 ? $Specific_output_file
-		 : &odir_ify($ifile_root, ( $Only_preprocess_C ) ? 'i' : 's');
+		 : &odir_ify($ifile_root, ( $Only_preprocess_hc ) ? 'i' : 's');
 
 	$ofile_target = $cc_as; # reset
     }
@@ -1704,12 +1682,35 @@ Now the Haskell compiler, C compiler, and assembler
 \begin{code}
    if ($do_hsc) {
 	&runHscAndProcessInterfaces( $ifile, $hscpp_hsc, $ifile_root, 
-				     $ofile_target, $hifile_target);
+				     $ofile_target, $hifile_target,
+				     $going_interactive);
+    }
+
+    if (-f $hsc_out_h_stub) {
+	&run_something("cp $hsc_out_h_stub $ofile_h_stub_target", 'Copy foreign export header file');
+    }
+
+    if (-f $hsc_out_c_stub) {
+	&run_something("cp $hsc_out_c_stub $ofile_c_stub_target", 'Copy foreign export C stubs');
+	local ($hsc_out_s_stub);
+	local ($hsc_out_o_stub);
+	($ofile_s_stub_target = $ofile_c_stub_target) =~ s/\.(.*)$/\.s/;
+	($ofile_o_stub_target = $ofile_c_stub_target) =~ s/\.(.*)$/\.o/;
+	&runGcc    (0, $ofile_c_stub_target, $ofile_s_stub_target);
+        &runAs     ($ofile_o_stub_target, $ofile_s_stub_target);
+	#
+	# Bring the C stub protos into scope when compiling the .hc file.
+	#
+	push (@CcInjects, "#include \"${hsc_out_h_stub}\"\n");
+	# Hack - ensure that the stub .h file is included in the OPTIONS section
+	#	 if the .hc file is saved.
+	push (@File_options, "-#include \"${ofile_h_stub_target}\"\n");
+	
     }
 
     if ($do_cc) {
 	&runGcc    ($is_hc_file, $hsc_out, $cc_as_o);
-	&runMangler($is_hc_file, $cc_as_o, $cc_as, $ifile_root);
+	&runMangler($is_hc_file, $cc_as_o, $cc_as, $ifile_root) if ! $Only_preprocess_hc;
     }
 
     &split_asm_file($cc_as)  if $do_as && $SplitObjFiles;
@@ -1726,10 +1727,14 @@ Finally, decide what to queue up for linker input.
 
 #ToDo:    local($or_isuf) = ($Isuffix eq '') ? '' : "|$Isuffix";
 
-    if ( $ifile !~ /\.(lhs|hs|hc|c|s)$/ && $ifile !~ /_hc$/ ) {
-	print STDERR "$Pgm: don't recognise suffix on `$ifile'; passing it through to linker\n"
-	    if $ifile !~ /\.a$/;
-
+    if ( $ifile !~ /\.(lhs|hs|hc|c|s|a|S)$/ && $ifile !~ /_hc$/ ) {
+        # There's sometimes confusion regarding .hi files; users
+	# supplying them on the command line.
+        if ( $ifile =~ /\.hi$/ ) {
+	    print STDERR "$Pgm: warning: found `$ifile' on command line; interface files should not be supplied here - ignoring it.\n";
+        } else {
+	   print STDERR "$Pgm: don't recognise suffix on `$ifile'; passing it through to linker\n";
+        }
 	# oops; we tentatively pushed the wrong thing; fix & do the right thing
 	pop(@Link_file); push(@Link_file, $ifile);
     }
@@ -1748,9 +1753,13 @@ Finally, decide what to queue up for linker input.
 sub runLit2pgm {
     local($in_lit2pgm, $lit2pgm_hscpp) = @_;
 
-    local($to_do) = "echo '#line 1 \"$in_lit2pgm\"' > $lit2pgm_hscpp && ".
-		    "$Unlit @Unlit_flags $in_lit2pgm -  >> $lit2pgm_hscpp";
-    @Files_to_tidy = ( $lit2pgm_hscpp );
+    local($to_do) = "";
+
+    # Only add #line pragma if we're going to need it.
+    $to_do  = "echo '#line 1 \"$in_lit2pgm\"' > $lit2pgm_hscpp && " if ($Cpp_flag_set);
+    $to_do .= "$Unlit @Unlit_flags $in_lit2pgm -  >> $lit2pgm_hscpp";
+     
+    push(@Files_to_tidy, $lit2pgm_hscpp );
 
     &run_something($to_do, 'literate pre-processor');
 }
@@ -1760,27 +1769,41 @@ sub runLit2pgm {
 sub runHscpp {
     local($in_lit2pgm, $lit2pgm_hscpp, $hscpp_hsc) = @_;
 
-    local($to_do);
+    local($to_do) = "";
+
+    # Strictly speaking, echoing of the following line pragma is only required
+    # on non-delit'ed input, as we've already added it during de-lit. However,
+    # hscpp will then add a {-# LINE 1 "$lit2pgm_hsc" -} to the top of the file,
+    # which is not very informative (but harmless). Hence, we uniformly have
+    # {-# LINE 1 "$in_lit2pgm" #-} as the first line to all cpp'ed hsc input.
+    #
+    $to_do = "echo '{-# LINE 1 \"$in_lit2pgm\" -}' > $hscpp_hsc && ";
 
     if ($HsCpp eq $Cat) {
-	$to_do = "echo '#line 1 \"$in_lit2pgm\"' > $hscpp_hsc && ".
-			"$HsCpp $lit2pgm_hscpp >> $hscpp_hsc";
-	@Files_to_tidy = ( $hscpp_hsc );
+	$to_do .= "$HsCpp $lit2pgm_hscpp >> $hscpp_hsc";
+	push(@Files_to_tidy, $hscpp_hsc );
 	&run_something($to_do, 'Ineffective C pre-processor');
     } else {
 	local($includes) = '-I' . join(' -I',@Include_dir);
-	$to_do = "echo '#line 1 \"$in_lit2pgm\"' > $hscpp_hsc && ".
-			"$HsCpp $Verbose $genSPECS_flag @HsCpp_flags -D__HASKELL1__=$Haskell1Version -D__GLASGOW_HASKELL__=$GhcVersionInfo $includes $lit2pgm_hscpp >> $hscpp_hsc";
-	@Files_to_tidy = ( $hscpp_hsc );
+	$to_do .= "$HsCpp $Verbose @HsCpp_flags @HsSourceCppOpts $includes $lit2pgm_hscpp >> $hscpp_hsc";
+	push(@Files_to_tidy, $hscpp_hsc );
 	&run_something($to_do, 'Haskellised C pre-processor');
     }
+   
+    if ( $Only_preprocess_C ) {
+	$to_do = "$Cat $hscpp_hsc";
+	&run_something($to_do, '');
+    }
+
 }
 \end{code}
 
 
 \begin{code}
 sub runHscAndProcessInterfaces {
-    local($ifile, $hscpp_hsc, $ifile_root, $ofile_target, $hifile_target) = @_;
+    local($ifile, $hscpp_hsc, $ifile_root, 
+          $ofile_target, $hifile_target,
+	  $going_interactive) = @_;
 
 	# $ifile 		is the original input file
 	# $hscpp_hsc		post-unlit, post-cpp, etc., input file
@@ -1798,7 +1821,7 @@ sub runHscAndProcessInterfaces {
      $i_atime,$i_mtime,$i_ctime,$i_blksize,$i_blocks) = stat($ifile);
 
     # The informational messages below are now conditional on -v being set -- SOF
-    if ( ! -f $ofile_target ) {
+    if ( $ofile_target ne "_stdin.s" && ! -f $ofile_target ) {
         print STDERR "$Pgm:compile:Output file $ofile_target doesn't exist\n" if $Verbose;
 	$source_unchanged = 0;
     }
@@ -1806,7 +1829,7 @@ sub runHscAndProcessInterfaces {
     ($o_dev,$o_ino,$o_mode,$o_nlink,$o_uid,$o_gid,$o_rdev,$o_size,
      $o_atime,$o_mtime,$o_ctime,$o_blksize,$o_blocks) = stat(_); # stat info from -f test
 
-    if ( ! -f $hifile_target ) {
+    if ( $hifile_target ne "_stdout" && ! -f $hifile_target ) {
         print STDERR "$Pgm:compile:Interface file $hifile_target doesn't exist\n" if $Verbose;
 	$source_unchanged = 0;
     }
@@ -1814,11 +1837,14 @@ sub runHscAndProcessInterfaces {
     ($hi_dev,$hi_ino,$hi_mode,$hi_nlink,$hi_uid,$hi_gid,$hi_rdev,$hi_size,
      $hi_atime,$hi_mtime,$hi_ctime,$hi_blksize,$hi_blocks) = stat(_); # stat info from -f test
 
-    if ($i_mtime > $o_mtime) {
+    if ( $ofile_target ne "_stdin.s" && $i_mtime > $o_mtime) {
     	print STDERR "$Pgm:recompile:Input file $ifile newer than $ofile_target\n" if $Verbose;
 	$source_unchanged = 0;
     }
 
+    # Tell the compiler which version we're using
+    push(@HsC_flags, "-fhi-version=${ProjectVersionInt}");
+
     # So if source_unchanged is still "1", we pass on the good news to the compiler
     # The -recomp flag can disable this, forcing recompilation
     if ($Do_recomp_chkr && $source_unchanged) {
@@ -1827,12 +1853,12 @@ sub runHscAndProcessInterfaces {
 
     # Run the compiler
 
-    &runHsc($ifile_root, $hsc_out, $hsc_hi, $going_interactive);
+    &runHsc($ifile_root, $hsc_out, $hsc_hi, $hsc_out_c_stub, $hsc_out_h_stub, $going_interactive);
 
    # See if it bailed out early, saying nothing needed doing.  
    # We work this out by seeing if it created an output .hi file
 
-    if ( ! -f $hsc_hi ) {
+    if ( ! -f $hsc_hi && $ProduceHi !~ /-nohifile=/ ) {
 	# Doesn't exist, so we bailed out early.
 	# Tell the C compiler and assembler not to run
 	$do_cc = 0; $do_as = 0;
@@ -1850,8 +1876,10 @@ sub runHscAndProcessInterfaces {
 	# out early, we still need to touch the interface file of B. The reason
         # for this is that B may export A's interface.
 	#
-	&run_something("touch $ofile_target $hifile_target", 
-		       "Touch $ofile_target $hifile_target,  to propagate dependencies");
+	&run_something("touch $ofile_target",
+		       "Touch $ofile_target,  to propagate dependencies") if $HscOut ne '-N=';
+	&run_something("touch $hifile_target", 
+		       "Touch $hifile_target,  to propagate dependencies") if $ProduceHi =~ /-nohifile=/ ;
 
     } else {	
 
@@ -1876,9 +1904,10 @@ sub runHscAndProcessInterfaces {
 
 
 	# Interface-handling is important enough to live off by itself
-	require('ghc-iface.prl') || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-iface.prl!\n");
-	&postprocessHiFile($hsc_hi, $hifile_target, $going_interactive);
-	
+        if ( $ProduceHi !~ /-nohifile=/ ) { # If we've produced one, process it.
+	   require('ghc-iface.prl') || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-iface.prl!\n");
+	   &postprocessHiFile($hsc_hi, $hifile_target, $going_interactive);
+	}
 	# if we're going to split up object files,
 	# we inject split markers into the .hc file now
 	if ( $HscOut eq '-C=' && $SplitObjFiles ) {
@@ -1897,29 +1926,28 @@ sub runHscAndProcessInterfaces {
 
 \begin{code}
 sub runHsc {
-    local($ifile_root, $hsc_out, $hsc_hi, $going_interactive) = @_;
+    local($ifile_root, $hsc_out, $hsc_hi, $hsc_out_c_stub, $hsc_out_h_stub, $going_interactive) = @_;
 
     # prepend comma to HsP flags (so hsc can tell them apart...)
     foreach $a ( @HsP_flags ) { $a = ",$a" unless $a =~ /^,/; }
 
     &makeHiMap() unless $HiMapDone;
-    #print STDERR "HiIncludes: $HiIncludeString\n";
     push(@HsC_flags, "-himap=$HiIncludeString");
 
     # here, we may produce .hc/.s and/or .hi files
     local($output) = '';
-    @Files_to_tidy = ();
+    #@Files_to_tidy = ();
 
     if ( $going_interactive ) {
-	# don't need .hi unless going to show it on stdout:
+	# don't need .hi unless we're going to show it on stdout:
 	$ProduceHi = '-nohifile=' if ! $HiOnStdout;
 	$do_cc = 0; $do_as = 0; $Do_lnkr = 0; # and we won't go any further...
     }
 
     # set up for producing output/.hi; note that flag twiddling
     # may mean that nothing will actually be produced:
-    $output = "$ProduceHi$hsc_hi $HscOut$hsc_out";
-    @Files_to_tidy = ( $hsc_hi, $hsc_out );
+    $output = "$ProduceHi$hsc_hi $HscOut$hsc_out -F=$hsc_out_c_stub -FH=$hsc_out_h_stub";
+    push(@Files_to_tidy, $hsc_hi, $hsc_out, $hsc_out_c_stub, $hsc_out_h_stub );
 
     # if we're compiling foo.hs, we want the GC stats to end up in foo.stat
     if ( $CollectingGCstats ) {
@@ -1930,6 +1958,7 @@ sub runHsc {
     if ( $CollectGhcTimings ) { # assume $RTS_style eq 'ghc'
 	# emit nofibbish time/bytes-alloc stats to stderr;
 	# see later .stat file post-processing
+	print STDERR "warning: both -Rgc-stats and -Rghc-timing used, -Rghc-timing wins." if $CollectingGCstats;
 	push(@HsC_rts_flags, "-s$Tmp_prefix.stat");
 	push(@Files_to_tidy, "$Tmp_prefix.stat");
     }
@@ -1941,7 +1970,28 @@ sub runHsc {
     }
 
     local($to_do);
-    $to_do = "$HsC @HsP_flags ,$hscpp_hsc $dump @HsC_flags $CoreLint $StgLint $Verbose $output +RTS @HsC_rts_flags";
+    # Win32 only: If the command processor used by system()
+    # exec()s the application as an ordinary Win32 executable,
+    # we're in trouble here, since the command line is likely
+    # to be > 255 chars long. To work around this situation,
+    # $HsC also understands `at-files',  i.e., `@file' on the
+    # command line will cause $HsC to add the contents of `file'
+    # to the command line.
+    #
+    #  [ Note: support for `at-files' is not compiled in by default ]
+    $cmd_line_opts_via_at_file=0;
+    if ($cmd_line_opts_via_at_file) {
+
+      local($to_do_opts) = "$Tmp_prefix.opts";
+      open(OPTS, "> $Tmp_prefix.opts") || &tidy_up_and_die(1,"Can't open $Tmp_prefix.opts\n");
+      print OPTS "$dump @HsC_flags $CoreLint $StgLint $Verbose";
+      close(OPTS);
+      $to_do = "$HsC @HsP_flags ,$hscpp_hsc \@$Tmp_prefix.opts $output +RTS @HsC_rts_flags";
+
+    } else {
+
+      $to_do = "$HsC @HsP_flags ,$hscpp_hsc $dump @HsC_flags $CoreLint $StgLint $Verbose $output +RTS @HsC_rts_flags";
+    }
     &run_something($to_do, 'Haskell compiler');
 
     # finish business w/ nofibbish time/bytes-alloc stats
@@ -2034,7 +2084,7 @@ sub runGcc {
     local($cc_help_s) = "ghc$$.s";
 
     $cc       = $CcRegd;
-    $s_output = ($is_hc_file || $TargetPlatform =~ /^(powerpc|hppa|i386)/) ? $cc_as_o : $cc_as;
+    $s_output = ($is_hc_file || $TargetPlatform =~ /^(powerpc|rs6000|hppa)/) ? $cc_as_o : $cc_as;
     $c_flags .= " @CcRegd_flags";
     $c_flags .= ($is_hc_file) ? " @CcRegd_flags_hc"  : " @CcRegd_flags_c";
 
@@ -2043,32 +2093,35 @@ sub runGcc {
     open(TMP, "> $cc_help") || &tidy_up_and_die(1,"$Pgm: failed to open `$cc_help' (to write)\n");
     if ( $is_hc_file ) {
 	print TMP <<EOINCL;
-#ifdef __STG_GCC_REGS__
-# if ! (defined(MAIN_REG_MAP) || defined(MARK_REG_MAP) || defined(SCAN_REG_MAP) || defined(SCAV_REG_MAP) || defined(FLUSH_REG_MAP))
-#  define MAIN_REG_MAP
-# endif
-#endif
-#include "stgdefs.h"
+#include "Stg.h"
 EOINCL
 	# user may have asked for #includes to be injected...
 	print TMP @CcInjects if $#CcInjects >= 0;
+    } else {
+	# Straight .c files may want to know that they're being used
+	# with a particular version of GHC, so we define __GLASGOW_HASKELL__ for their benefit.
+        print TMP "#define __GLASGOW_HASKELL__ ${ProjectVersionInt}\n";
     }
     # heave in the consistency info
     print TMP "static char ghc_cc_ID[] = \"\@(#)cc $ifile\t$Cc_major_version.$Cc_minor_version,$Cc_consist_options\";\n";
 
-    # and #include the real source
     print TMP "#include \"$hsc_out\"\n";
     close(TMP) || &tidy_up_and_die(1,"Failed writing to $cc_help\n");
 
-    local($to_do) = "$cc $Verbose $ddebug_flag $c_flags @Cpp_define -D__HASKELL1__=$Haskell1Version $includes $cc_help > $Tmp_prefix.ccout 2>&1 && ( if [ $cc_help_s != $s_output ] ; then mv $cc_help_s $s_output ; else exit 0 ; fi )";
-    # note: __GLASGOW_HASKELL__ is pointedly *not* #defined at the C level.
-    if ( $Only_preprocess_C ) { # HACK ALERT!
+    # Don't redirect stderr into intermediate file if slamming output onto stdout (e.g., with -E)
+    local($fuse_stderr) = "2>&1" if ! $Only_preprocess_hc;
+    local($to_do) = "$cc $Verbose $ddebug_flag $c_flags @Cpp_define $includes $cc_help > $Tmp_prefix.ccout $fuse_stderr && ( if [ $cc_help_s != $s_output ] ; then mv $cc_help_s $s_output ; else exit 0 ; fi )";
+
+    if ( $Only_preprocess_hc ) { # HACK ALERT!
 	$to_do =~ s/ -S\b//g;
     }
-    @Files_to_tidy = ( $cc_help, $cc_help_s, $s_output );
-    $PostprocessCcOutput = 1;	# hack, dear hack...
+    push(@Files_to_tidy, $cc_help, $cc_help_s, $s_output );
+    $PostprocessCcOutput = 1 if ! $Only_preprocess_hc;	# hack, dear hack...
     &run_something($to_do, 'C compiler');
     $PostprocessCcOutput = 0;
+    if ( $Only_preprocess_hc ) {
+       system("$Cat $Tmp_prefix.ccout");
+    }
     unlink($cc_help, $cc_help_s);
 }
 \end{code}
@@ -2089,42 +2142,17 @@ sub runMangler {
 	# post-process the assembler [.hc files only]
 	&mangle_asm($cc_as_o, $cc_as);
 
-
-#OLD: for sanity:
-#OLD:	local($target) = 'oops';
-#OLD:	$target = '-alpha'	if $TargetPlatform =~ /^alpha-/;
-#OLD:	$target = '-hppa'	if $TargetPlatform =~ /^hppa/;
-#OLD:	$target = '-old-asm' 	if $TargetPlatform =~ /^i386-/;
-#OLD:	$target = '-m68k'	if $TargetPlatform =~ /^m68k-/;
-#OLD:	$target = '-mips'	if $TargetPlatform =~ /^mips-/;
-#OLD:	$target = ''		if $TargetPlatform =~ /^powerpc-/;
-#OLD:	$target = '-solaris'	if $TargetPlatform =~ /^sparc-sun-solaris2/;
-#OLD:	$target = '-sparc'	if $TargetPlatform =~ /^sparc-sun-sunos4/;
-#OLD:
-#OLD:	if ( $target ne '' ) {
-#OLD:	    require("ghc-asm$target.prl")
-#OLD:	    || &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm$target.prl!\n");
-#OLD:	    &mangle_asm($cc_as_o, "$cc_as-2"); # the OLD one!
-#OLD:	    &run_something("$Cmp -s $cc_as-2 $cc_as || $Diff $cc_as-2 $cc_as 1>&2 || exit 0",
-#OLD:		"Diff'ing old and new mangled .s files"); # NB: to stderr
-#OLD:	}
-
     } elsif ($TargetPlatform =~ /^hppa/) {
 	# minor mangling of non-threaded files for hp-pa only
 	require('ghc-asm.prl')
 	|| &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm-hppa.prl!\n");
 	&mini_mangle_asm_hppa($cc_as_o, $cc_as);
 
-    } elsif ($TargetPlatform =~ /^powerpc/) {
-	# minor mangling of non-threaded files for hp-pa only
+    } elsif ($TargetPlatform =~ /^powerpc|^rs6000/) {
+	# minor mangling of non-threaded files for powerpcs and rs6000s 
 	require('ghc-asm.prl')
 	|| &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm-powerpc.prl!\n");
 	&mini_mangle_asm_powerpc($cc_as_o, $cc_as);
-    } elsif ($TargetPlatform =~ /^i386/) {
-	# extremely-minor OFFENSIVE mangling of non-threaded just one file
-	require('ghc-asm.prl')
-	|| &tidy_up_and_die(1,"$Pgm: panic: can't load ghc-asm.prl!\n");
-	&mini_mangle_asm_i386($cc_as_o, $cc_as);
     }
 
     # save a copy of the .s file, even if we are carrying on...
@@ -2140,9 +2168,12 @@ sub runAs {
 
     local($asmblr) = ( $As ) ? $As : $CcRegd;
 
+    # need to add the -I flags in case the file is going through cpp (.S files)
+    local($includes) = '-I' . join(' -I', @Include_dir);
+
     if ( ! $SplitObjFiles ) {
-	local($to_do)  = "$asmblr -o $as_out -c @As_flags $cc_as";
-	@Files_to_tidy = ( $as_out );
+	local($to_do)  = "$asmblr -o $as_out -c @As_flags $includes $cc_as";
+	push(@Files_to_tidy, $as_out );
 	&run_something($to_do, 'Unix assembler');
 
     } else { # more complicated split-ification...
@@ -2162,7 +2193,7 @@ sub runAs {
 	for ($f = 1; $f <= $NoOfSplitFiles; $f++ ) {
 	    local($split_out) = &odir_ify("${ifile_root}__${f}",'o');
 	    local($to_do) = "$asmblr -o $split_out -c @As_flags ${Tmp_prefix}__${f}.s";
-	    @Files_to_tidy = ( $split_out );
+	    push(@Files_to_tidy, $split_out );
 
 	    &run_something($to_do, 'Unix assembler');
 	}
@@ -2220,16 +2251,10 @@ sub run_something {
 	open(CCOUT, "< $Tmp_prefix.ccout")
 	    || &tidy_up_and_die(1,"$Pgm: failed to open `$Tmp_prefix.ccout'\n");
 	while ( <CCOUT> ) {
-    	    next if /attribute directive ignored/;
 	    next if /call-clobbered/;
-	    next if /from .*COptRegs\.lh/;
-	    next if /from .*(stg|rts)defs\.h:/;
+	    next if /control reaches end/;
+	    next if /from .*Stg\.h:/;
 	    next if /from ghc\d+.c:\d+:/;
-	    next if /from .*\.lc/;
-	    next if /from .*SMinternal\.l?h/;
-	    next if /ANSI C does not support \`long long\'/;
-	    next if /warning:.*was declared \`extern\' and later \`static\'/;
-	    next if /warning: assignment discards \`const\' from pointer target type/;
 	    next if /: At top level:$/;
 	    next if /: In function \`.*\':$/;
 	    next if /\`ghc_cc_ID\' defined but not used/;
@@ -2242,7 +2267,6 @@ sub run_something {
         if ($Using_dump_file) {
 	    print STDERR "Compilation Errors dumped in $Specific_dump_file\n";
 	}
-
 	&tidy_up_and_die($return_val, '');
     }
     $Using_dump_file = 0;
@@ -2263,20 +2287,27 @@ sub process_ghc_timings {
     local($SysSpecificTiming) = 'ghc';
 
     open(STATS, $StatsFile) || die "Failed when opening $StatsFile\n";
-    local($tot_live) = 0; # for calculating avg residency
+    local($max_live)    = 0; 
+    local($tot_live)    = 0; # for calculating residency stuff
+    local($tot_samples) = 0;
 
     while (<STATS>) {
-	$tot_live += $1 if /^\s*\d+\s+\d+\s+\d+\.\d+\%\s+(\d+)\s+\d+\.\d+\%/;
-
-	$BytesAlloc = $1 if /^\s*([0-9,]+) bytes allocated in the heap/;
+	if (! /Minor/ && /^\s*\d+\s+\d+\s+(\d+)\s+\d+\.\d+\%/ ) {
+	 	$max_live = $1 if $max_live < $1;
+		$tot_live += $1;
+		$tot_samples += 1;
+	}
+        $BytesAlloc = $1 if /^\s*([0-9,]+) bytes allocated in the heap/;
 
 	if ( /^\s*([0-9,]+) bytes maximum residency .* (\d+) sample/ ) {
 	    $MaxResidency = $1; $ResidencySamples = $2;
 	}
 
-	$GCs = $1 if /^\s*([0-9,]+) garbage collections? performed/;
+        $GCs = $1 if /^\s*([0-9,]+) garbage collections? performed/;
 
-	if ( /^\s*INIT\s+time\s*(\d+\.\d\d)s\s*\(\s*(\d+\.\d\d)s elapsed\)/ ) {
+	# The presence of -? in the following pattern is only there to
+	# accommodate 0.29 && <= 2.05 RTS'
+	if ( /^\s*INIT\s+time\s*(\d+\.\d\d)s\s*\(\s*-?(\d+\.\d\d)s elapsed\)/ ) {
 	    $InitTime = $1; $InitElapsed = $2;
 	} elsif ( /^\s*MUT\s+time\s*(\d+\.\d\d)s\s*\(\s*(\d+\.\d\d)s elapsed\)/ ) {
 	    $MutTime = $1; $MutElapsed = $2;
@@ -2285,8 +2316,10 @@ sub process_ghc_timings {
 	}
     }
     close(STATS) || die "Failed when closing $StatsFile\n";
-    if ( defined($ResidencySamples) && $ResidencySamples > 0 ) {
-	$AvgResidency = int ($tot_live / $ResidencySamples) ;
+    if ( $tot_samples > 0 ) {
+	$ResidencySamples = $tot_samples;
+	$MaxResidency = $max_live;
+	$AvgResidency = int ($tot_live / $tot_samples) ;
     }
 
     # warn about what we didn't find
@@ -2371,7 +2404,7 @@ nonsensical).
 sub grab_arg_arg {
     local(*Args, $option, $rest_of_arg) = @_;
     
-    if ($rest_of_arg) {
+    if ($rest_of_arg ne '') {
 	return($rest_of_arg);
     } elsif ($#Args >= 0) {
 	local($temp) = $Args[0]; shift(@Args); 
@@ -2418,6 +2451,197 @@ sub add_Hsc_flags {
 }
 \end{code}
 
+To add another system library, you'll need to augment the
+Supported_syslibs variable with name and info on your addition
+to the syslib family. The info bit consist of the following:
+
+   - interface file directory
+       see the misc or posix entry for how to distinguish
+       between using installed and build tree directories.
+       
+   - directory location of archives
+       
+   - location of (way-independent) C support libs.
+       not all libraries need this - if you don't, just
+       give the empty string.
+   - list of syslibs you depend on.
+
+   - additional ghc command line flags that should be used.
+   - additional C compiler command line flags that should be used.
+   - link 
+
+
+\begin{code}
+
+# Hash to keep track of 
+%Syslibs_added = ();
+
+sub add_syslib {
+    local($syslib) = @_;
+
+    # Lifting this out of this sub brings it out of scope - why??
+    %Supported_syslibs =
+     ( exts,
+	[  # where to slurp interface files from
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc/imports/exts"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/exts"
+	  )
+	, # where to find the archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/exts"
+	  )
+	, '' # no cbits
+	, '' # Syslib dependencies
+	, '' # extra ghc opts
+	, '' # extra cc opts
+	, '' # extra ld opts
+	],
+
+       misc,
+	[  # where to slurp interface files from
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc/imports/misc"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/misc"
+	  )
+	, # where to find the archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/misc"
+	  )
+	, # where to find the cbits archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/misc/cbits"
+	  )
+	, 'exts' # Syslib dependencies
+	, ''     # extra ghc opts
+	, ''     # extra cc opts
+	, ( $TargetPlatform =~ /-solaris2$/  ? '-lnsl -lsocket' : '')
+	],
+       hbc,
+	[  # where to slurp interface files from
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc/imports/hbc"
+	       : "$TopPwd/CONTRIB/libraries/hbc/src"
+	  )
+	, # where to find the archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/CONTRIB/libraries/src/hbc"
+	  )
+	, # where to find the cbits archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/CONTRIB/libraries/hbc/cbits"
+	  )
+	, 'exts' # Syslib dependencies
+	, ''     # extra ghc opts
+	, ''     # extra cc opts
+	, ''
+	],
+       posix,
+	[  # where to slurp interface files from
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc/imports/posix"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/posix"
+	  )
+	, # where to find the archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/posix"
+	  )
+	, # where to find the cbits archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/posix/cbits"
+	  )
+	, 'misc' # Syslib dependencies
+	, ''     # extra ghc opts
+	, ''     # extra cc opts
+	, ''     # extra ld opts
+	],
+       concurrent,
+	[  # where to slurp interface files from
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc/imports/concurrent"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/concurrent"
+	  )
+	, # where to find the archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/$CURRENT_DIR/$GHC_LIB_DIR/concurrent"
+	  )
+	, '' # where to find the cbits archive to use when linking
+	, '' # Syslib dependencies
+	, '' # extra ghc opts
+	, '' # extra cc opts
+	, '' # extra ld opts
+	],
+       win32,
+	[  # where to slurp interface files from
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc/imports/win32"
+	       : "$TopPwd/hslibs/win32/src"
+	  )
+	, # where to find the archive to use when linking
+	  ( $INSTALLING 
+	       ? "$InstLibDirGhc"
+	       : "$TopPwd/hslibs/win32/src"
+	  )
+	, ''
+	, 'exts' # Syslib dependencies
+	, ''     # extra ghc opts
+	, ''     # extra cc opts
+	, '-luser32 -lgdi32'     # extra ld opts
+	]
+    );
+
+    # check if it's supported..
+    
+    if ( !exists $Supported_syslibs{$syslib} ) {
+       print STDERR "$Pgm: no such system library (-syslib): $syslib\n";
+       $Status++;
+       return;
+    }
+
+    # This check is here to avoid syslib loops from
+    # spoiling the party. A side-effect of it is that
+    # it disallows multiple mentions of a syslib on a command-line,
+    # explicit *and* implicit ones (i.e., "-syslib exts -syslib misc"
+    # is not equal to "-syslib exts -syslib misc -syslib exts",
+    # which it needs to be)
+    # 
+    # Since our current collection of syslibs don't have any
+    # loops, this test is disabled.
+    #
+    # ToDo: loop avoidance scheme when the need arises
+    #
+    #return if ( exists $Syslibs_added{$syslib} );
+    	
+    $Syslibs_added{$syslib} = 1;
+
+    local ($hi_dir, $lib_dir, $lib_cbits_dir,
+    	   $syslib_deps, $syslib_ghc_opts,
+	   $syslib_cc_opts, $syslib_ld_opts) = @{ $Supported_syslibs{$syslib} };
+
+
+    unshift(@SysImport_dir, $hi_dir);
+    push(@SysLibrary_dir, $lib_dir);
+    push(@SysLibrary_dir, $lib_cbits_dir) if ( $lib_cbits_dir ne '');
+
+    push(@SysLibrary, "-lHS$syslib");
+    push(@SysLibrary, "-lHS${syslib}_cbits") if ( $lib_cbits_dir ne '');
+    push(@SysLibrary, $syslib_ld_opts) if ($syslib_ld_opts ne '');   
+
+    # Add on any extra dependencies.
+    foreach $lib (split(' ',$syslib_deps)) {
+      &add_syslib($lib);
+    }
+}
+\end{code}
+
 Source files may have {-# OPTIONS ... #-} pragmas at the top, containing
 command line options we want to append to collection of commands specified
 directly. @check_for_source_options@ looks at the top of a de-lit'ified Haskell
@@ -2451,7 +2675,10 @@ sub check_for_source_options {
         elsif ( /^$/ ) { # ignore empty lines
            ;
         }
-        elsif ( /^#line.+$/ ) { # ignore comment lines
+        elsif ( /^#line.+$/ ) { # ignore comment lines (unused..ToDo: rm )
+           ;
+        }
+        elsif ( /^{-# LINE.+$/ ) { # ignore line pragmas
            ;
         }
         else { # stop looking, something non-empty / not
@@ -2481,11 +2708,11 @@ sub splitCmdLine {
 arg: while($_ = $args[0]) {
     shift(@args);
     # sigh, we have to deal with these -option arg specially here.
-    /^-(tmpdir|odir|o|isuf|osuf|hisuf|hisuf-prelude|odump|syslib)$/ && 
+    /^-(tmpdir|odir|ohi|o|isuf|osuf|hisuf|odump|syslib)$/ && 
        do { push(@Cmd_opts, $_); push(@Cmd_opts,$args[0]); shift(@args); next arg; };
-    /^-./  && do { push(@Cmd_opts, $_); next arg; };
+    /^--?./  && do { push(@Cmd_opts, $_); next arg; };
 
-    if (/\.[oa]$/) {
+    if (/\.([^_]+_)?[oa]$/) {
 	push(@Link_file, $_);
     } else {
 	push(@Input_file, $_);
@@ -2545,13 +2772,13 @@ arg: while($_ = $Args[0]) {
     if (/^-\?$/ || /^--?help$/) { print $LongUsage; exit $Status; }
 
     #-----------version ----------------------------------------------------
-    /^--version$/   && do { print STDERR "${PROJECTNAME}, version ${PROJECTVERSION}, patchlevel ${PROJECTPATCHLEVEL}\n"; exit $Status; };
+    /^--version$/   && do { print STDERR "${ProjectName}, version ${ProjectVersion}, patchlevel ${ProjectPatchLevel}\n"; exit $Status; };
 
     #---------- verbosity and such -----------------------------------------
     /^-v$/	    && do { $Verbose = '-v'; $Time = 'time'; next arg; };
 
     #---------- what phases are to be run ----------------------------------
-    /^-recomp/	    && do { $Do_recomp_chkr = 1; next arg; };
+    /^-(no-)?recomp/	    && do { $Do_recomp_chkr = ($1 eq '') ? 1 : 0; next arg; };
 
     /^-cpp$/	    && do { $Cpp_flag_set = 1; next arg; };
     # change the global default:
@@ -2566,15 +2793,18 @@ arg: while($_ = $Args[0]) {
 			    next arg; };
     # leave out actual C generation (debugging) [also turns off interface gen]
 
-    /^-hi$/	    && do { $HiOnStdout = 1; $ProduceHi = '-hifile='; next arg; };
+
+    /^-hi$/	         && do { $HiOnStdout = 1; $ProduceHi = '-hifile='; next arg; };
     # _do_ generate an interface; usually used as: -noC -hi
 
     /^-nohi$/	    && do { $ProduceHi = '-nohifile='; next arg; };
     # don't generate an interface (even if generating C)
 
-    /^-hi-diffs$/             && do { $HiDiff_flag = 'normal'; next arg; };
-    /^-hi-diffs-with-usages$/ && do { $HiDiff_flag = 'usages'; next arg; };
-    /^-no-hi-diffs$/          && do { $HiDiff_flag = '';       next arg; };
+    /^-hi-diffs$/             && do { $HiDiff_flag  = 'normal'; next arg; };
+    /^-hi-diffs-with-usages$/ && do { $HiDiff_flag  = 'usages'; next arg; };
+    /^-no-hi-diffs$/          && do { $HiDiff_flag  = '';       next arg; };
+    /^-keep-hi-diffs$/	      && do { $Keep_HiDiffs = 1; next arg; };
+
     # show/disable diffs if the interface file changes
 
     /^-E$/	    && do { push(@CcBoth_flags, '-E');
@@ -2661,13 +2891,6 @@ arg: while($_ = $Args[0]) {
 				$Status++;
 			    }
 			    next arg; };
-    # ToDo: remove, not a `normal' user thing to do (should be automatic)
-    /^-hisuf-prelude$/	    && do { $HiSuffix_prelude = &grab_arg_arg(*Args,'-hisuf-prelude', '');
-			    if ($HiSuffix =~ /\./ ) {
-				print STDERR "$Pgm: -hisuf-prelude suffix shouldn't contain a .\n";
-				$Status++;
-			    }
-			    next arg; };
     /^-odump$/	    && do { $Specific_dump_file = &grab_arg_arg(*Args,'-odump', '');
 			    if ($Specific_dump_file =~ /(.*)\/[^\/]*$/) {
 				local($dir_part) = $1;
@@ -2711,13 +2934,12 @@ arg: while($_ = $Args[0]) {
 			    : '-fauto-sccs-on-exported-toplevs';
 		next arg; };
 
-    #--------- ticky/concurrent/parallel -----------------------------------
+    #--------- ticky/parallel ----------------------------------------------
     # we sort out the details a bit later on
 
-    /^-concurrent$/ && do { $CONCURing = 'c'; next arg; }; # concurrent Haskell
-    /^-gransim$/    && do { $GRANing   = 'g'; next arg; }; # GranSim
+    /^-gransim$/    && do { $GRANing   = 'g'; &add_syslib('concurrent'); next arg; }; # GranSim
     /^-ticky$/	    && do { $TICKYing  = 't'; next arg; }; # ticky-ticky
-    /^-parallel$/   && do { $PARing    = 'p'; next arg; }; # parallel Haskell
+    /^-parallel$/   && do { $PARing    = 'p'; &add_syslib('concurrent'); next arg; }; # parallel Haskell
 
     #-------------- "user ways" --------------------------------------------
 
@@ -2753,27 +2975,7 @@ arg: while($_ = $Args[0]) {
     /^-l(.*)/	    && do { push(@UserLibrary,'-l'.&grab_arg_arg(*Args,'-l', $1)); next arg; };
 
     /^-syslib(.*)/  && do { local($syslib) = &grab_arg_arg(*Args,'-syslib',$1);
-			    print STDERR "$Pgm: no such system library (-syslib): $syslib\n",
-			      $Status++ unless $syslib =~ /^(hbc|ghc|posix|contrib)$/;
-
-			    unshift(@SysImport_dir,
-				${INSTALLING}
-				? "$InstSysLibDir/$syslib/imports"
-				: "$TopPwd/hslibs/$syslib/src");
-
-			    if ( ${INSTALLING} ) {
-				push(@SysLibrary_dir,
-					("$InstSysLibDir"));
-			    } else {
-				push(@SysLibrary_dir,
-					("$TopPwd/hslibs/$syslib"
-					,"$TopPwd/hslibs/$syslib/cbits"));
-			    }
-
-			    push(@SysLibrary, "-lHS$syslib");
-			    push(@SysLibrary, "-lHS${syslib}_cbits")
-			      unless $syslib eq 'contrib'; #HACK! it has no cbits
-
+			    &add_syslib($syslib);
 			    next arg; };
 
     #=======================================================================
@@ -2797,7 +2999,8 @@ arg: while($_ = $Args[0]) {
     /^-optP(.*)$/   && do { push(@HsCpp_flags,      $1); next arg; };
     /^-optCrts(.*)$/&& do { push(@HsC_rts_flags,    $1); next arg; };
     /^-optC(.*)$/   && do { push(@HsC_flags,        $1); next arg; };
-    /^-optcpp(.*)$/ && do { push(@Cpp_define,       $1); next arg; };
+    /^-optp(.*)$/   && do { push(@HsP_flags,        $1); next arg; };
+    /^-optcpp(.*)$/ && do { push(@Cpp_define,       $1); $Only_preprocess_hc = ($1 eq "-E"); next arg; };
     /^-optc(.*)$/   && do { push(@CcBoth_flags,     $1); next arg; };
     /^-opta(.*)$/   && do { push(@As_flags,         $1); next arg; };
     /^-optl(.*)$/   && do { push(@Ld_flags,         $1); next arg; };
@@ -2807,10 +3010,6 @@ arg: while($_ = $Args[0]) {
     /^-D(.*)/	    && do { push(@HsCpp_flags, "'-D".&grab_arg_arg(*Args,'-D',$1)."'"); next arg; };
     /^-U(.*)/	    && do { push(@HsCpp_flags, "'-U".&grab_arg_arg(*Args,'-U',$1)."'"); next arg; };
 
-    /^-genSPECS/   && do { $Cpp_flag_set = 1;
-			   $genSPECS_flag = $_;
-			    next arg; };
-
     #---------- post-Haskell "assembler"------------------------------------
     /^-ddump-raw-asm$/		  && do { $Dump_raw_asm	       = 1; next arg; };
     /^-ddump-asm-splitting-info$/ && do { $Dump_asm_splitting_info = 1; next arg; };
@@ -2820,32 +3019,24 @@ arg: while($_ = $Args[0]) {
     /^-keep-hc-files?-too$/	&& do { $Keep_hc_file_too = 1; next arg; };
     /^-keep-s-files?-too$/	&& do { $Keep_s_file_too = 1;  next arg; };
 
-    /^-fhaskell-1\.3$/		&& do { next arg; }; # a no-op right now
-
     /^-fignore-interface-pragmas$/ && do { push(@HsC_flags, $_); next arg; };
 
     /^-fno-implicit-prelude$/      && do { $NoImplicitPrelude= 1; push(@HsC_flags, $_); next arg; };
-     # don't do stack checking using page fault `trick'.
-     # (esoteric).
-    /^-fstack-check$/	           && do { $StkChkByPageFaultOK = 0; next arg; };
+
      #
      # have the compiler proper generate concurrent code,
      # really only used when you want to configure your own
-     # special user compilation way. (Use -concurrent when
-     # compiling `Concurrent Haskell' programs).
+     # special user compilation way.
      #
-     # (ditto for -fgransim, fscc-profiling and -fticky-ticky)
+     # (ditto for -fgransim, fscc-profiling, -fparallel and -fticky-ticky)
      #
-    /^-fconcurrent$/      && do { push(@HsC_flags,$_); next arg; };
     /^-fscc-profiling$/   && do { push(@HsC_flags,$_); next arg; };
     /^-fticky-ticky$/     && do { push(@HsC_flags,$_); next arg; };
     /^-fgransim$/ 	  && do { push(@HsC_flags,$_); next arg; };
+    /^-fparallel$/        && do { push(@HsC_flags,$_); next arg; };
 
-    /^-user-prelude-force/	&& do { # ignore if not -user-prelude
-				        next arg; };
-
-    /^-split-objs/	&& do {
-			if ( $TargetPlatform !~ /^(alpha|hppa1\.1|i386|m68k|mips|powerpc|sparc)-/ ) {
+    /^-split-objs$/	&& do {
+			if ( $TargetPlatform !~ /^(alpha|hppa1\.1|i386|m68k|mips|powerpc|rs6000|sparc)-/ ) {
 			    $SplitObjFiles = 0;
 			    print STDERR "WARNING: don't know how to split objects on this platform: $TargetPlatform\n`-split-objs' option ignored\n";
 			} else {
@@ -2860,18 +3051,17 @@ arg: while($_ = $Args[0]) {
 			}
 			next arg; };
 
+    /^-fallow-overlapping-instances$/ && do { push(@HsC_flags, $_); next arg; };
+    /^-fallow-undecidable-instances$/ && do { push(@HsC_flags, $_); next arg; };
     /^-fglasgow-exts$/
 		&& do { push(@HsC_flags, $_);
 			push(@HsP_flags, '-N');
 
-#			push(@HsC_flags, '-fshow-import-specs');
+			# -fglasgow-exts implies -syslib exts
+			&add_syslib('exts');
 
 			next arg; };
 
-    /^-fspeciali[sz]e-unboxed$/
-		&& do { $Oopt_DoSpecialise	= '-fspecialise';
-			$Oopt_SpecialiseUnboxed	= '-fspecialise-unboxed';
-			next arg; };
     /^-fspeciali[sz]e$/
 		&& do { $Oopt_DoSpecialise = '-fspecialise'; next arg; };
     /^-fno-speciali[sz]e$/
@@ -2906,19 +3096,21 @@ arg: while($_ = $Args[0]) {
     # --------------- Renamer -------------
 
 
-    /^-fno-tycon-pruning$/ 
-		    && do { push(@HsC_flags, $_); next arg; };
+    /^-fno-prune-tydecls$/     && do { push(@HsC_flags, $_); next arg; };
+    /^-fno-prune-instdecls$/     && do { push(@HsC_flags, $_); next arg; };
 
     # ---------------
 
     /^-fasm-(.*)$/  && do { $HscOut = '-S='; next arg; }; # force using nativeGen
-    /^-fvia-C$/	    && do { $HscOut = '-C='; next arg; }; # force using C compiler
+    /^-fvia-[cC]$/	    && do { $HscOut = '-C='; next arg; }; # force using C compiler
 
     # ---------------
 
-    /^(-funfolding-use-threshold)(.*)$/
-		    && do { $Oopt_UnfoldingUseThreshold = $1 . &grab_arg_arg(*Args,$1, $2);
-			    next arg; };
+    /^-funfolding-.*$/
+		    && do { push(@HsC_flags, $_); next arg };
+
+    /^-funfold-casms-in-hi-file$/
+		    && do { push(@HsC_flags, $_); next arg };
 
     /^(-fmax-simplifier-iterations)(.*)$/
 		    && do { $Oopt_MaxSimplifierIterations = $1 . &grab_arg_arg(*Args,$1, $2);
@@ -2927,35 +3119,35 @@ arg: while($_ = $Args[0]) {
     /^-fno-pedantic-bottoms$/
 		    && do { $Oopt_PedanticBottoms = ''; next arg; };
 
+    /^-fno-pre-inlining$/
+		    && do { push(@HsC_flags, $_); next arg };
+
     /^-fdo-monad-eta-expansion$/
 		    && do { $Oopt_MonadEtaExpansion = $_; next arg; };
 
     /^-fno-let-from-(case|app|strict-let)$/ # experimental, really (WDP 95/10)
 		    && do { push(@HsC_flags, $_); next arg; };
 
-    /^(-freturn-in-regs-threshold)(.*)$/
-		    && do { local($what) = $1;
-			    local($num)  = &grab_arg_arg(*Args,$what, $2);
-			    if ($num < 2 || $num > 8) {
-				die "Bad experimental flag: $_\n";
-			    } else {
-				$HscOut = '-C='; # force using C compiler
-				push(@HsC_flags, "$what$num");
-				push(@CcRegd_flags, "-D__STG_REGS_AVAIL__=$num");
-			    }
-			    next arg; };
-
     # --------------- Warnings etc. ------
 
-    /^-f(show-import-specs)/
-		    && do { push(@HsC_flags, $_); next arg; };
+    /^-fwarn-(.*)$/      && do { push(@HsC_flags, $_); next arg; };
 
-    # for now, just -fwarn-name-shadowing
-    /^-fwarn-(.*)$/   && do { push(@HsC_flags, $_); next arg; };
     /^-fno-(.*)$/   && do { push(@HsC_antiflags, "-f$1");
 			    &squashHscFlag("-f$1");
 			    next arg; };
 
+    /^-W$/	    && do { push(@HsC_flags, @MinusWOpts); next arg; };
+    /^-Wall$/	    && do { push(@HsC_flags, @MinusWallOpts); next arg; };
+    /^(-Wnot|w)$/   && do { foreach (@Hsc_flags) {
+				/^-fwarn-(.*)$/ && do { $_=''; };
+			    };
+			    push(@HsC_antiflags, @StandardWarnings);
+			    next arg; };
+
+    # --------------- fun stuff ----------------
+
+    /^-freport-compile$/ && do { push(@HsC_flags, $_); next arg; };
+
     # --------------- platform specific flags (for gcc mostly) ----------------
 
     /^-mlong-calls$/ && do { # for GCC for HP-PA boxes,
@@ -2985,6 +3177,7 @@ arg: while($_ = $Args[0]) {
     /^-d(dump|ppr)-/         && do { push(@HsC_flags, $_); next arg; };
     /^-dverbose-(simpl|stg)/ && do { push(@HsC_flags, $_); next arg; };
     /^-dshow-passes/	     && do { push(@HsC_flags, $_); next arg; };
+    /^-dshow-rn-stats/	     && do { push(@HsC_flags, $_); next arg; };
     /^-dshow-rn-trace/	     && do { push(@HsC_flags, $_); next arg; };
     /^-dsource-stats/        && do { push(@HsC_flags, $_); next arg; };
     /^-dsimplifier-stats/    && do { push(@HsC_flags, $_); next arg; };
@@ -3017,7 +3210,7 @@ arg: while($_ = $Args[0]) {
 	}
 	next arg; };
 
-    /^-(K|Rmax-(stk|stack)size)(.*)/ && do {
+    /^(-K|Rmax-(stk|stack)size)(.*)/ && do {
         local($flag) = $1;
     	local($stk_size) = &grab_arg_arg(*Args,'-Rmax-stksize', $3);
     	if ($stk_size =~ /(\d+)[Kk]$/) {
@@ -3064,6 +3257,7 @@ arg: while($_ = $Args[0]) {
     #---------- Linker (gcc, really) ---------------------------------------
 
     /^-static$/		&& do { push(@Ld_flags, $_); next arg; };
+    /^-no-hs-main$/	&& do { $NoHaskellMain=1; next arg;    };
 
     #---------- mixed cc and linker magic ----------------------------------
     # this optimisation stuff is finally sorted out later on...