Description: do not add -m64 for 64bit archs
--- a/Makefile
+++ b/Makefile
@@ -16,6 +16,7 @@
 
 # system specific stuff (concerning 64bit compilation)
 MACHINE:=$(shell uname -m)
+
 ifeq ($(64bit),yes)
   ifneq ($(MACHINE),x86_64)
     m64=yes
@@ -41,7 +42,9 @@
 endif
 
 ifeq ($(m64),yes)
-  CFLAGS += -m64
+  ifeq (,$(filter $(MACHINE),arm64 ia64 alpha mips64 mips64el aarch64))
+    CFLAGS += -m64
+  endif
 endif
 
 ifneq ($(errorcheck),no)
