Added Linux support.

+Makefile was changed, to produce dispel under linux + mac os and dispel.exe
 under Windows.
+Added make install and make uninstall

Makefile

@@ -3,8 +3,16 @@ CFLAGS=-Wall -O2
 LDFLAGS=
 SOURCES=main.c 65816.c
 OBJECTS=$(SOURCES:.c=.o)
-EXECUTABLE=dispel.exe
-
+CAN_INSTALL = no
+ifeq ($(OS),Windows_NT)
+	EXECUTABLE = dispel.exe
+else
+	EXECUTABLE = dispel
+	UNAME_S = $(shell uname -s)
+	ifeq ($(UNAME_S),Linux)
+		CAN_INSTALL = yes
+	endif
+endif
 all: $(SOURCES) $(EXECUTABLE)
 
 $(EXECUTABLE): $(OBJECTS) 
@@ -12,6 +20,10 @@ $(EXECUTABLE): $(OBJECTS)
 
 .c.o:
 	$(CC) -c $(CFLAGS) $< -o $@
-
+install:
+	cp -v $(EXECUTABLE) /usr/bin
+	#FIXME It ALWAYS copies dispel to /usr/bin, regardless of OS
+uninstall:
+	rm -rf /usr/bin/$(EXECUTABLE)
 clean:
 	rm *.o ${EXECUTABLE}

main.c

@@ -11,8 +11,12 @@
 #ifdef __APPLE__
 #include <sys/uio.h>
 #else
+#ifdef __linux__
+#include <sys/io.h>
+#else
 #include <io.h>
 #endif
+#endif
 
 #include "dispel.h"
 
@@ -275,12 +279,12 @@ int main(int argc, char *argv[])
 	}
 
 	// Read the file into memory
-#ifdef __APPLE__
-	fseek(fin, 0L, SEEK_END);
+#if defined(__APPLE__) || defined(__linux__)
+	fseek(fin, 0L, SEEK_END); //Apple and linux code
 	len = ftell(fin);
 	fseek(fin, 0L, SEEK_SET);
 #else
-	len = filelength(fileno(fin));
+	len = filelength(fileno(fin)); //Windows code
 #endif
 
 	// Make sure the image is big enough