-matom only available with gcc 4.5.0 or above

solenv/inc/unxgcc.mk

@@ -110,13 +110,13 @@ CFLAGSPROF=
 # Compiler flags for debugging
 CFLAGSDEBUG=-g
 CFLAGSDBGUTIL=
-# Compiler flags for enabling optimizations
-.IF "$(PRODUCT)"!=""
-CFLAGSOPT=$(CDEFAULTOPT) # optimizing for products
 
 GCCNUMVERSION_CMD=-dumpversion $(PIPEERROR) $(AWK) -v num=true -f $(SOLARENV)/bin/getcompver.awk
 GCCNUMVER:=$(shell @-$(CXX) $(GCCNUMVERSION_CMD))
 
+# Compiler flags for enabling optimizations
+.IF "$(PRODUCT)"!=""
+CFLAGSOPT=$(CDEFAULTOPT) # optimizing for products
 .IF "$(USE_SYSTEM_STL)"!="YES" || "$(GCCNUMVER)" <= "000400050000"
 #STLPort headers are full of aliasing warnings and
 #At least SLED 10.2 gcc 4.3 overly agressively optimizes
@@ -127,6 +127,7 @@ CFLAGSOPT+=-fno-strict-aliasing
 .ELSE 	# "$(PRODUCT)"!=""
 CFLAGSOPT=   							# no optimizing for non products
 .ENDIF	# "$(PRODUCT)"!=""
+
 # Compiler flags for disabling optimizations
 CFLAGSNOOPT=-O0
 # Compiler flags for describing the output path

solenv/inc/unxlngi.mk

@@ -27,7 +27,11 @@
 
 # mk file for Unix Linux Intel (X86) using GCC, please make generic modifications to unxlng.mk
 CDEFAULTOPT=-Os
+.IF "$(GCCNUMVER)" >= "000400050000"
+ARCH_FLAGS*=-mtune=atom
+.ELSE
 ARCH_FLAGS*=-mtune=pentiumpro
+.ENDIF
 .INCLUDE : unxlng.mk
 CDEFS+=-DX86
 DLLPOST=.so