Makefile: Add arch independent installation rules

Makefile

@@ -3,21 +3,45 @@ VERSION = $(shell cat VERSION.txt)
 FLAGS = -Wall -O3 -ffast-math -DVERSION=$(VERSION)
 LDLIBS  =  -lpthread -lm -ljpeg -lconfig -lrt -lfftw3 -lfftw3f -lrtlsdr -ldl
 
+prefix = /usr/local
 #####
 
-ifneq ("$(wildcard /opt/vc/src/hello_pi/hello_fft)","")
-TARGET=RASPBERRYPI
+TARGETS = X64 ARM
+
+ifeq ($(TARGET),)
+  HOST_UNAME="$(shell uname -m)"
+  ifeq ($(HOST_UNAME), "x86_64")
+    TARGET = X64
+  else ifeq ($(HOST_UNAME), "armv7l")
+    TARGET = ARM
+    ifneq ("$(wildcard /opt/vc/src/hello_pi/hello_fft)","")
+      USE_RPI_GPU_FFT = 1
+    endif
+  else
+    $(error Unknown host architecture: $(HOST_UNAME), manually specify TARGET from $(TARGETS))
+  endif
+else
+  ifeq ($(filter $(TARGET),$(TARGETS)),)
+    $(error Unknown target: $(TARGET))
+  endif
 endif
 
-ifeq ($(TARGET),RASPBERRYPI)
-USE_RPI_GPU_FFT = 1
-FLAGS += -mcpu=arm1176jzf-s -mtune=arm1176jzf-s -march=armv6zk -mfpu=vfp
+
+ifeq ($(TARGET),ARM)
+  FLAGS += -mcpu=arm1176jzf-s -mtune=arm1176jzf-s -march=armv6zk -mfpu=vfp
+  ifdef USE_RPI_GPU_FFT
+    OGN_DECODE_PATH=rpi-gpu-bin
+  else
+    OGN_DECODE_PATH=arm-bin
+  endif
+else ifeq ($(TARGET), X64)
+  OGN_DECODE_PATH=x64-bin
 endif
 
 ifdef USE_RPI_GPU_FFT
-LDLIBS += -ldl
-GPU_FLAGS = -DUSE_RPI_GPU_FFT
-GPU_SRC   = src/mailbox.c src/gpu_fft.c src/gpu_fft_base.c src/gpu_fft_twiddles.c src/gpu_fft_shaders.c
+  LDLIBS += -ldl
+  GPU_FLAGS = -DUSE_RPI_GPU_FFT
+  GPU_SRC   = src/mailbox.c src/gpu_fft.c src/gpu_fft_base.c src/gpu_fft_twiddles.c src/gpu_fft_shaders.c
 endif
 
 #####
@@ -36,4 +60,15 @@ r2fft_test:	src/r2fft_test.cc src/r2fft.h src/fft.h
 clean:
 	$(RM) gsm_scan ogn-rf r2fft_test
 
-.PHONY: all clean
+
+install: ogn-rf gsm_scan
+	install -D ogn-rf $(DESTDIR)$(prefix)/bin/ogn-rf
+	install -D gsm_scan $(DESTDIR)$(prefix)/bin/gsm_scan
+	install -D $(OGN_DECODE_PATH)/ogn-decode $(DESTDIR)$(prefix)/bin/ogn-decode
+
+uninstall:
+	$(RM) $(DESTDIR)$(prefix)/bin/ogn-rf
+	$(RM) $(DESTDIR)$(prefix)/bin/gsm_scan
+	$(RM) $(DESTDIR)$(prefix)/bin/ogn-decode
+
+.PHONY: all clean install uninstall