guarded gcc-specific LDFLAGS in sim build

Author: danielinux

arch.mk

@@ -1029,10 +1029,10 @@ ifeq ($(TARGET),sim)
   LD_END_GROUP=
   BOOT_IMG=test-app/image.elf
   CFLAGS+=-DARCH_SIM
+  CFLAGS+=-DWOLFBOOT_USE_STDLIBC
   ifeq ($(USE_GCC),1)
-     CFLAGS+=-DWOLFBOOT_USE_STDLIBC
+      LDFLAGS+=-Wl,-gc-sections -Wl,-Map=wolfboot.map
   endif
-  LDFLAGS+=-Wl,-gc-sections -Wl,-Map=wolfboot.map
   ifeq ($(FORCE_32BIT),1)
     CFLAGS+=-m32
     LDFLAGS+=-m32