[project @ 2001-08-07 08:16:48 by rrt]

Revert to System.system using the shell, hence need to use new rawSystem on
Windows to launch GHC's sub-processes.

ghc/compiler/Makefile

 # -----------------------------------------------------------------------------
-# $Id: Makefile,v 1.181 2001/08/04 06:19:54 ken Exp $
+# $Id: Makefile,v 1.182 2001/08/07 08:16:48 rrt Exp $
 
 TOP = ..
 include $(TOP)/mk/boilerplate.mk
@@ -113,6 +113,7 @@ compiling_with_4xx=NO
 else
 bootstrapped = $(shell if (test $(CANON_HC_VERSION) -ge $(ProjectVersionInt)0); then echo YES; else echo NO; fi)
 compiling_with_4xx = $(shell if (test $(CANON_HC_VERSION) -lt 5000); then echo YES; else echo NO; fi)
+ghc_502_at_least = $(shell if (test $(CANON_HC_VERSION) -ge 5020); then echo YES; else echo NO; fi)
 endif
 
 # Only include GHCi if we're bootstrapping with at least version 411
@@ -126,26 +127,27 @@ endif
 # Enable code that assumes a MSDOSish subshell. See mk/config.mk.in
 # for explanatory comment as to what this does.
 ifeq "$(TARGETPLATFORM)" "i386-unknown-mingw32"
-ghc_501_at_least = $(shell if (test $(CANON_HC_VERSION) -gt 5000); then echo YES; else echo NO; fi)
+ghc_501_at_least = $(shell if (test $(CANON_HC_VERSION) -ge 5010); then echo YES; else echo NO; fi)
 
 # -----------------------------------------------
-# GHCi calls the C procedure 'system', but alas GHC 4.08's 
-# implementation of this (in the library System) didn't work 
-# properly on Windows.  Everything is fine if you are compiling
-# GHC with GHC 5.01 or better, but lacking that we have the following
+# GHCi calls the C procedure 'rawSystem'; but alas GHC 4.08 
+# does not have this.  Everything is fine if you are compiling
+# GHC with GHC 5.02 or better, but lacking that we have the following
 # hack: 
-#	copy system.c from lib/std (where it is correct) 
-#	into main/system.c (where it'll be compiled and
-#			    linked with the compiler)
+#	copy rawSystem.c from hslibs/lang/cbits
+#       and SystemExts.lhs from hslibs/lang
+#	into main/ (where they'll be compiled and linked with the compiler)
 
-ifneq "$(ghc_501_at_least)" "YES"
-C_SRCS += main/system.c
+ifneq "$(ghc_502_at_least)" "YES"
+C_SRCS += main/rawSystem.c
+HS_SRCS += main/SystemExts.lhs
 SRC_CC_OPTS += -I$(GHC_LIB_DIR)/std/cbits
 SRC_MKDEPENDC_OPTS += -I$(GHC_LIB_DIR)/std/cbits
-HS_OBJS += main/system.o
-
-main/system.c : ../lib/std/cbits/system.c
-	$(CP) ../lib/std/cbits/system.c main
+HS_OBJS += main/rawSystem.o
+main/rawSystem.c : $(FPTOOLS_TOP)/hslibs/lang/cbits/rawSystem.c
+	$(CP) $< main
+main/SystemExts.lhs: $(FPTOOLS_TOP)/hslibs/lang/SystemExts.lhs
+	$(CP) $< main
 endif
 endif
 #		End of system hack

ghc/compiler/main/SysTools.lhs

@@ -17,9 +17,9 @@ module SysTools (
 				-- Where package.conf is
 
 	-- Interface to system tools
-	runUnlit, runCpp, runCc, -- [String] -> IO ()
-	runMangle, runSplit,	 -- [String] -> IO ()
-	runAs, runLink,		 -- [String] -> IO ()
+	runUnlit, runCpp, runCc,-- [String] -> IO ()
+	runMangle, runSplit,	-- [String] -> IO ()
+	runAs, runLink,		-- [String] -> IO ()
 	runMkDLL,
 
 	touch,			-- String -> String -> IO ()
@@ -34,7 +34,7 @@ module SysTools (
 
 	-- System interface
 	getProcessID,		-- IO Int
-	system, 		-- String -> IO Int
+	system, 		-- String -> IO ExitCode
 
 	-- Misc
 	showGhcUsage,		-- IO ()	Shows usage message and exits
@@ -54,18 +54,19 @@ import IO
 import Directory	( doesFileExist, removeFile )
 import IOExts		( IORef, readIORef, writeIORef )
 import Monad		( when, unless )
-import System		( system, ExitCode(..), exitWith, getEnv )
+import System		( ExitCode(..), exitWith, getEnv, system )
 import CString
 import Int
 import Addr
     
 #include "../includes/config.h"
 
-#if !defined(mingw32_TARGET_OS)
+#ifndef mingw32_TARGET_OS
 import qualified Posix
 #else
 import List		( isPrefixOf )
 import MarshalArray
+import SystemExts       ( rawSystem )
 #endif
 
 #include "HsVersions.h"
@@ -553,7 +554,12 @@ runSomething :: String		-- For -v message
 
 runSomething phase_name pgm args
  = traceCmd phase_name cmd_line $
-   do   { exit_code <- system cmd_line
+   do   {
+#ifndef mingw32_TARGET_OS
+	  exit_code <- system cmd_line
+#else
+          exit_code <- rawSystem cmd_line
+#endif
 	; if exit_code /= ExitSuccess
 	  then throwDyn (PhaseFailed phase_name exit_code)
   	  else return ()