Makefile: disable '-mtune' parameter for gcc 4.5 x86_64

- gcc 4.5 gives error when it has parameter -mtune=x86_64 (this should
  be the default value anyhow) - tested on opensuse 11.4

Makefile.defs

@@ -385,11 +385,17 @@ ifneq (,$(findstring gcc, $(CC_LONGVER)))
 	#transform gcc version into 2.9x or 3.0
 	CC_SHORTVER:=$(shell echo "$(CC_VER)" | cut -d" " -f 2| \
 				 sed -e 's/[^0-9]*-\(.*\)/\1/'| \
-				 sed -e 's/2\.9.*/2.9x/' -e 's/3\.[0-3]\..*/3.0/' -e \
-				 	's/3\.[0-3]/3.0/' -e 's/3\.[4-9]\..*/3.4/' -e \
-					's/3\.[4-9]/3.4/' -e 's/4\.[0-1]\..*/4.x/' -e \
-					's/4\.[0-1]/4.x/' -e 's/4\.[2-9]\..*/4.2+/' -e \
-					's/4\.[2-9]$$/4.2+/')
+				 sed -e 's/2\.9.*/2.9x/' \
+					-e 's/3\.[0-3]\..*/3.0/' \
+					-e 's/3\.[0-3]/3.0/' \
+					-e 's/3\.[4-9]\..*/3.4/' \
+					-e 's/3\.[4-9]/3.4/' \
+					-e 's/4\.[0-1]\..*/4.x/' \
+					-e 's/4\.[0-1]/4.x/' \
+					-e 's/4\.[2-46-9]\..*/4.2+/' \
+					-e 's/4\.[2-46-9]$$/4.2+/' \
+					-e 's/4\.5\..*/4.5/' \
+					-e 's/4\.5$$/4.5/')
 ifeq (,$(strip $(filter-out 3.0 3.4 4.x 4.2+,$(CC_SHORTVER))))
 	# dependencies can be generated on-the-fly while compiling *.c
 	CC_MKDEP_OPTS=-MMD -MP
@@ -933,6 +939,16 @@ ifeq		($(CC_NAME), gcc)
 				C_DEFS+=-DCC_GCC_LIKE_ASM
 				#common stuff
 				CFLAGS=-g -O9 -funroll-loops  -Wcast-align $(PROFILE)
+			#if gcc 4.5
+			# don't add '-mtune=$(CPU)' - gcc failure
+ifeq			($(CC_SHORTVER), 4.5)
+$(call				set_if_empty,CPU,opteron)
+					CFLAGS+=-m64 -minline-all-stringops \
+							-falign-loops \
+							-ftree-vectorize \
+							-fno-strict-overflow
+					LDFLAGS+=-m64
+else
 			#if gcc 4.2+
 ifeq			($(CC_SHORTVER), 4.2+)
 $(call				set_if_empty,CPU,opteron)
@@ -984,6 +1000,7 @@ endif			# CC_SHORTVER, 3.0
 endif			# CC_SHORTVER, 3.4
 endif			# CC_SHORTVER, 4.x
 endif			# CC_SHORTVER, 4.2+
+endif			# CC_SHORTVER, 4.5
 
 else		# CC_NAME, gcc
 ifeq		($(CC_NAME), icc)