Create static library in Makefile

.hgignore

@@ -2,6 +2,7 @@ syntax: glob
 Release\*
 Debug\*
 *.o
-sat
+RunTest
 *.txt
 *.orig
+*.a

Makefile

@@ -1,26 +1,36 @@
 CC=g++
+AR=ar
 CFLAGS=-c -Wall -O2
 LDFLAGS=
-SOURCES=Coord.cpp \
+
+SOURCES=CoordGeodetic.cpp \
+	CoordTopographic.cpp \
 	Eci.cpp \
 	Globals.cpp \
 	Julian.cpp \
 	Observer.cpp \
 	SGP4.cpp \
+	SatelliteOrbit.cpp \
         Timespan.cpp \
 	Tle.cpp \
-	Vector.cpp  \
+	Vector.cpp
-	main.cpp
 OBJECTS=$(SOURCES:.cpp=.o)
-EXECUTABLE=sat
+SGP4LIB=libsgp4.a
 
-all: $(SOURCES) $(EXECUTABLE)
+TESTPROG=RunTest
+TESTSOURCES=RunTest.cpp
+TESTOBJECTS=$(TESTSOURCES:.cpp=.o)
 
-$(EXECUTABLE): $(OBJECTS)
+all: $(SGP4LIB) ${TESTPROG}
-	$(CC) $(LDFLAGS) $(OBJECTS) -o $@
+
+${SGP4LIB}: ${OBJECTS}
+	${AR} -rcs -o $@ ${OBJECTS}
+
+${TESTPROG}: ${SGP4LIB} ${TESTOBJECTS}
+	$(CC) ${TESTOBJECTS} $(LDFLAGS) -static -L. -lsgp4 -o $@
 
 .cpp.o:
 	$(CC) $(CFLAGS) $< -o $@
 
 clean:
-	rm -rf *.o $(EXECUTABLE)
+	rm -rf *.o ${SGP4LIB} ${TESTPROG}

RunTest.cpp

@@ -12,6 +12,7 @@
 #include <iostream>
 #include <fstream>
 #include <vector>
+#include <cstdlib>
 
 void RunTle(Tle tle, double start, double end, double inc) {
     double current = start;