diff --git a/Makefile b/Makefile
index c7c3c04..fe96075 100644
--- a/Makefile
+++ b/Makefile
@@ -161,7 +161,7 @@ invoke-arch-%:
 ifneq ($(CURR_ARCH),)
 .PHONY: build-arch
 
-SUPERLIBS_ARCH_CONFIG_TAG := $(shell echo $($(CURR_LIB)_CONFIGURE_FLAGS) | md5sum | cut -c1-8)
+SUPERLIBS_ARCH_CONFIG_TAG := $(shell echo $($(CURR_LIB)_CONFIGURE_FLAGS) | shasum | cut -c1-8)
 SUPERLIBS_ARCH_CONFIG_STAMP := $(SUPERLIBS_LIB_STAMPS_DIR)/configure-$(CURR_PLATFORM)-$(CURR_ARCH).$(SUPERLIBS_ARCH_CONFIG_TAG).stamp
 SUPERLIBS_ARCH_DIR := $(SUPERLIBS_PLATFORM_DIR)/archs/$(CURR_ARCH)
 SUPERLIBS_ARCH_PREFIX := $(SUPERLIBS_ARCH_DIR)/prefix