Avoid adding host-specific cpuflags to the common part of DYNAMIC_ARCH builds

Author: martin-frbg

Makefile.x86

@@ -1,10 +1,21 @@
 # COMPILER_PREFIX = mingw32-
 
+ifndef DYNAMIC_ARCH
+ADD_CPUFLAGS = 1
+else
+ifdef TARGET_CORE
+ADD_CPUFLAGS = 1
+endif
+endif
+
+ifdef ADD_CPUFLAGS
 ifdef HAVE_SSE
 CCOMMON_OPT += -msse
+ifneq ($(F_COMPILER), NAG)
 FCOMMON_OPT += -msse
 endif
-
+endif
+endif
 
 ifeq ($(OSNAME), Interix)
 ARFLAGS		= -m x86