Commit: Fixes for building avr-elf with g++.

[Nick Clifton]

Hi Denis, Hi Anatoly, Hi Eric,

  I am applying the patch below as an obvious fix for building the
  avr-elf port of gcc with a C++ compiler.

  There were two problems:

    * t-avr was using $(CC) instead of $(COMPILER) which meant the
      targets failed to build because they included C++ style headers
      (eg vec.h).

    * avr.c was using integer values in places where a specific enum was
      required.

   The patch below fixes these problems and allows avr-elf-gcc to be
   built.

Cheers
  Nick

gcc/ChangeLog
2012-08-16  Nick Clifton  <nickc@redhat.com>

	* config/avr/t-avr: Replace occurrences of $(CC) with $(COMPILER).
	* config/avr/avr.c (avr_legitimize_reload_address): Add casts
	for reload_type enums.
        (DEF_BUILTIN): Cast the icode to enum insn_code.

Index: gcc/config/avr/avr.c
===================================================================
--- gcc/config/avr/avr.c	(revision 190438)
+++ gcc/config/avr/avr.c	(working copy)
@@ -1741,7 +1741,7 @@
               
               push_reload (XEXP (mem, 0), NULL_RTX, &XEXP (mem, 0), NULL,
                            POINTER_REGS, Pmode, VOIDmode, 0, 0,
-                           1, addr_type);
+                           1, (enum reload_type) addr_type);
               
               if (avr_log.legitimize_reload_address)
                 avr_edump (" RCLASS.2 = %R\n IN = %r\n OUT = %r\n",
@@ -1749,7 +1749,7 @@
               
               push_reload (mem, NULL_RTX, &XEXP (x, 0), NULL,
                            BASE_POINTER_REGS, GET_MODE (x), VOIDmode, 0, 0,
-                           opnum, type);
+                           opnum, (enum reload_type) type);
               
               if (avr_log.legitimize_reload_address)
                 avr_edump (" RCLASS.2 = %R\n IN = %r\n OUT = %r\n",
@@ -1763,7 +1763,7 @@
         {
           push_reload (x, NULL_RTX, px, NULL,
                        POINTER_REGS, GET_MODE (x), VOIDmode, 0, 0,
-                       opnum, type);
+                       opnum, (enum reload_type) type);
           
           if (avr_log.legitimize_reload_address)
             avr_edump (" RCLASS.3 = %R\n IN = %r\n OUT = %r\n",
@@ -10338,7 +10338,7 @@
   {
 
 #define DEF_BUILTIN(NAME, N_ARGS, ID, TYPE, ICODE)      \
-    { ICODE, NAME, N_ARGS, NULL_TREE },
+    { (enum insn_code) ICODE, NAME, N_ARGS, NULL_TREE },
 #include "builtins.def"  
 #undef DEF_BUILTIN
   };
Index: gcc/config/avr/t-avr
===================================================================
--- gcc/config/avr/t-avr	(revision 190438)
+++ gcc/config/avr/t-avr	(working copy)
@@ -19,20 +19,20 @@
 
 driver-avr.o: $(srcdir)/config/avr/driver-avr.c \
   $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H)
-	$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
+	$(COMPILER) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
 
 avr-devices.o: $(srcdir)/config/avr/avr-devices.c \
   $(srcdir)/config/avr/avr-mcus.def \
   $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H)
-	$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
+	$(COMPILER) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
 
 avr-c.o: $(srcdir)/config/avr/avr-c.c \
   $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(C_COMMON_H)
-	$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
+	$(COMPILER) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
 
 avr-log.o: $(srcdir)/config/avr/avr-log.c \
   $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(TREE_H) $(INPUT_H) dumpfile.h
-	$(CC) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
+	$(COMPILER) -c $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $<
 
 avr.o avr-c.o: $(srcdir)/config/avr/builtins.def
 
@@ -45,7 +45,7 @@
 
 gen-avr-mmcu-texi$(build_exeext): $(srcdir)/config/avr/gen-avr-mmcu-texi.c \
   $(TM_H) $(AVR_MCUS) $(srcdir)/config/avr/avr-devices.c
-	$(CC) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $< -o $@
+	$(COMPILER) $(ALL_CFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) $< -o $@
 
 # Make sure that the -mmcu= documentation is in sync with the compiler.
 $(srcdir)/doc/avr-mmcu.texi: s-avr-mmcu-texi; @true