* config.sub: Add mingw32 support.

* configure.in: Likewise.
        * mh-mingw32: New file.

config/.Sanitize

@@ -49,6 +49,7 @@ mh-irix6
 mh-lynxos
 mh-lynxrs6k
 mh-m68kpic
+mh-mingw32
 mh-ncr3000
 mh-ncrsvr43
 mh-necv4

config/mh-mingw32

@@ -0,0 +1,12 @@
+# We don't want debugging info in Win32-hosted toolchains.
+# Accomplish this by overriding CFLAGS.
+CFLAGS=-O2
+CXXFLAGS=-O2
+
+# We also need to override LIBGCC2_DEBUG_CFLAGS so libgcc2 will be
+# built without debugging information
+
+LIBGCC2_DEBUG_CFLAGS=
+
+# custom installation rules for mingw32 (append .exe to binaries, etc.)
+# INSTALL_DOSREL=install-dosrel

configure.in

@@ -188,6 +188,9 @@ case "${host}" in
   *-cygwin32*)
     host_makefile_frag="${host_makefile_frag} config/mh-cygwin32"
     ;;
+  *-mingw32*)
+    host_makefile_frag="${host_makefile_frag} config/mh-mingw32"
+    ;;
   *-windows*)
     host_makefile_frag="${host_makefile_frag} config/mh-windows"
     ;;
@@ -470,6 +473,8 @@ done
 case "${host}" in
 	i[3456]86-*-go32*)
 	  configdirs="$configdirs dosrel" ;;
+	i[3456]86-*-mingw32*)
+	  configdirs="$configdirs dosrel" ;;
 	*-cygwin32*)
 	  configdirs="$configdirs dosrel" ;;
 esac
@@ -493,6 +498,10 @@ case "${host}" in
     noconfigdirs="$noconfigdirs libide vmake jstools"
 # end-sanitize-ide
 	;;
+  i[3456]86-*-mingw32*)
+    # noconfigdirs="tcl tk expect dejagnu make texinfo bison patch flex byacc send-pr uudecode dejagnu diff guile perl apache inet itcl tix db sn gnuserv"
+     noconfigdirs="expect dejagnu cvs autoconf automake send-pr gprof rcs guile perl texinfo apache inet"
+	;;
   *-*-cygwin32)
      noconfigdirs="expect dejagnu cvssrc autoconf automake send-pr gprof rcs guile perl texinfo apache inet"
     ;;
@@ -587,6 +596,17 @@ case "${target}" in
     # but don't build gdb
     noconfigdirs="$noconfigdirs gdb target-libg++ target-libstdc++ target-libio target-librx"
     ;;
+  i[3456]86-*-mingw32*)
+    target_configdirs="$target_configdirs target-mingw"
+    noconfigdirs="$noconfigdirs expect target-libgloss"
+
+    # Can't build gdb for cygwin32 if not native.
+    case "${host}" in
+      i[3456]86-*-mingw32) ;; # keep gdb tcl tk expect etc.
+      *) noconfigdirs="$noconfigdirs gdb tcl tk expect itcl tix db sn gnuserv"
+         ;;
+    esac
+    ;;    
   *-*-cygwin32)
     target_configdirs="$target_configdirs target-winsup"
     noconfigdirs="$noconfigdirs expect target-libgloss"
@@ -1009,10 +1029,10 @@ if [ "${shared}" = "yes" ]; then
   esac
 fi
 
-# If we are building for a cygwin32 host, then set INSTALL_PROGRAM_ARGS to
+# If we are building for a win32 host, then set INSTALL_PROGRAM_ARGS to
 # -x.  This will cause programs to be installed with .exe extensions.
 case "${host}" in
-*-*-cygwin32*)
+*-*-cygwin32* | i[3456]86-*-mingw32)
     sed -e 's/^INSTALL_PROGRAM_ARGS[ 	]*=.*$/INSTALL_PROGRAM_ARGS = -x/' \
 	Makefile > Makefile.tem
     rm -f Makefile