Externals: add hidapi

Current master (d17db57b9d4354752e0af42f5f33007a42ef2906) because
Android support was added after the current release (0.8.0-rc1).

Externals/hidapi/testgui/Makefile.linux

@@ -0,0 +1,32 @@
+###########################################
+# Simple Makefile for HIDAPI test program
+#
+# Alan Ott
+# Signal 11 Software
+# 2010-06-01
+###########################################
+
+all: testgui
+
+CC=gcc
+CXX=g++
+COBJS=../libusb/hid.o
+CPPOBJS=test.o
+OBJS=$(COBJS) $(CPPOBJS)
+CFLAGS=-I../hidapi -Wall -g -c `fox-config --cflags` `pkg-config libusb-1.0 --cflags`
+LIBS=-ludev -lrt -lpthread `fox-config --libs` `pkg-config libusb-1.0 --libs`
+
+
+testgui: $(OBJS)
+	g++ -Wall -g $^ $(LIBS) -o testgui
+
+$(COBJS): %.o: %.c
+	$(CC) $(CFLAGS) $< -o $@
+
+$(CPPOBJS): %.o: %.cpp
+	$(CXX) $(CFLAGS) $< -o $@
+
+clean:
+	rm *.o testgui
+
+.PHONY: clean