Exclude libstdc++ and libgcc if libc++ is requested.

Bug: 15174002
Change-Id: I24fe428c3520f76cd61f0660b59ba18a1f2d2dad
diff --git a/core/combo/TARGET_linux-arm64.mk b/core/combo/TARGET_linux-arm64.mk
index 9518ba7..1b6e733 100644
--- a/core/combo/TARGET_linux-arm64.mk
+++ b/core/combo/TARGET_linux-arm64.mk
@@ -178,7 +178,7 @@
 	-o $@ \
 	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 	$(PRIVATE_LDFLAGS) \
-	$(PRIVATE_TARGET_LIBGCC) \
+	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_SO_O)) \
 	$(PRIVATE_LDLIBS)
 endef
@@ -204,7 +204,7 @@
 	-o $@ \
 	$(PRIVATE_TARGET_GLOBAL_LDFLAGS) \
 	$(PRIVATE_LDFLAGS) \
-	$(PRIVATE_TARGET_LIBGCC) \
+	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O)) \
 	$(PRIVATE_LDLIBS)
 endef
@@ -226,7 +226,7 @@
 	$(call normalize-target-libraries,$(filter %libc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
 	$(call normalize-target-libraries,$(filter %libc_nomalloc.a,$(PRIVATE_ALL_STATIC_LIBRARIES))) \
 	$(PRIVATE_TARGET_FDO_LIB) \
-	$(PRIVATE_TARGET_LIBGCC) \
+	$(if $(PRIVATE_LIBCXX),,$(PRIVATE_TARGET_LIBGCC)) \
 	-Wl,--end-group \
 	$(if $(filter true,$(PRIVATE_NO_CRT)),,$(PRIVATE_TARGET_CRTEND_O))
 endef