Fixed building error on Raspberry Pi

docs/changes.txt

@@ -22,6 +22,7 @@
 ## Bugs
 ##
 
+- Fixed building error on Raspberry Pi
 - Fixed false negative on Unit Test in case of out-of-memory with grep in single mode
 - Fixed false negative on Unit Test with hash-type 25400
 - Fixed functional error when nonce-error-corrections that were set on the command line in hash-mode 22000/22001 were not accepted

src/Makefile

@@ -254,6 +254,14 @@ endif
 endif
 endif
 
+ifeq ($(UNAME),Linux)
+IS_RPI                  := $(shell grep -q Raspberry /proc/cpuinfo && echo 1 || echo 0)
+
+ifeq ($(IS_RPI),1)
+CFLAGS                  += -mcpu=cortex-a72
+endif
+endif
+
 CFLAGS                  += -pipe -Iinclude/ -IOpenCL/
 
 # LZMA