Patched to build shared library and install it

Makefile

@@ -1,8 +1,33 @@
-CFLAGS = -O3 -ggdb3 -fsanitize=address
+CFLAGS = -O3 -ggdb3 -fsanitize=address -fPIC
 CPPFLAGS = -std=c11 -I.
-LDFLAGS = -lm -fsanitize=address
+LDFLAGS = -L. -lm -lft8 -fsanitize=address
+PREFIX ?= /usr
+LIBDIR := ${PREFIX}/lib/x86_64-linux-gnu
 
-TARGETS = gen_ft8 decode_ft8 test
+# The shared library and it's parts
+ft8lib := libft8.so
+ft8lib_hdrs += ft8/constants.h
+ft8lib_hdrs += ft8/crc.h
+ft8lib_hdrs += ft8/decode.h
+ft8lib_hdrs += ft8/encode.h
+ft8lib_hdrs += ft8/ldpc.h
+ft8lib_hdrs += ft8/pack.h
+ft8lib_hdrs += ft8/text.h
+ft8lib_hdrs += ft8/unpack.h
+
+ft8lib_objs += common/wave.o
+ft8lib_objs += fft/kiss_fft.o
+ft8lib_objs += fft/kiss_fftr.o
+ft8lib_objs += ft8/constants.o
+ft8lib_objs += ft8/crc.o
+ft8lib_objs += ft8/decode.o
+ft8lib_objs += ft8/encode.o
+ft8lib_objs += ft8/text.o
+ft8lib_objs += ft8/pack.o
+ft8lib_objs += ft8/ldpc.o
+ft8lib_objs += ft8/unpack.o
+
+TARGETS = ${ft8lib} gen_ft8 decode_ft8 test
 
 .PHONY: run_tests all clean
 
@@ -11,17 +36,29 @@ all: $(TARGETS)
 run_tests: test
 	@./test
 
-gen_ft8: gen_ft8.o ft8/constants.o ft8/text.o ft8/pack.o ft8/encode.o ft8/crc.o common/wave.o
-	$(CXX) $(LDFLAGS) -o $@ $^
+decode_ft8.o gen_ft8.o: ${ft8lib} #install
 
-test:  test.o ft8/pack.o ft8/encode.o ft8/crc.o ft8/text.o ft8/constants.o fft/kiss_fftr.o fft/kiss_fft.o
+gen_ft8: gen_ft8.o
 	$(CXX) $(LDFLAGS) -o $@ $^
 
-decode_ft8: decode_ft8.o fft/kiss_fftr.o fft/kiss_fft.o ft8/decode.o ft8/encode.o ft8/crc.o ft8/ldpc.o ft8/unpack.o ft8/text.o ft8/constants.o common/wave.o
+test:  test.o
 	$(CXX) $(LDFLAGS) -o $@ $^
 
+decode_ft8: decode_ft8.o
+	$(CXX) $(LDFLAGS) -lft8 -o $@ $^
+
 clean:
-	rm -f *.o ft8/*.o common/*.o fft/*.o $(TARGETS)
+	rm -f ${ft8lib} *.o ft8/*.o common/*.o fft/*.o $(TARGETS) *.a
+
 install:
-	$(AR) rc libft8.a ft8/constants.o ft8/encode.o ft8/pack.o ft8/text.o common/wave.o
-	install libft8.a /usr/lib/libft8.a
+#	$(AR) rc libft8.a ${ft8lib_objs}
+#	install -m 0644 libft8.a ${LIBDIR}/lib/libft8.a
+	install -d ${PREFIX}/include/ft8
+	install -m 0644 ${ft8lib_hdrs} ${PREFIX}/include/ft8
+	install -m 0644 libft8.so ${LIBDIR}/libft8.so
+	install -m 0755 gen_ft8 ${PREFIX}/bin/genft8
+	install -m 0755 decode_ft8 ${PREFIX}/bin/decode_ft8
+
+# Build the shared library
+${ft8lib}: ${ft8lib_objs}
+	${CXX} -shared -Wl,-soname,$@ -o $@ $^

README.md

@@ -52,3 +52,9 @@ Of course in moments of frustration I have looked up the original WSJT-X code, w
 
 Karlis Goba,
 YL3JG
+
+------
+This has been patched by Dangerous Devices / Pripyat Automations to build as
+usable shared library.
+
+I'll try to keep it up to day!.