Create Makefile.. finally

Makefile

@@ -0,0 +1,7 @@
+libeebie.so:
+	$(CC) -shared -g -O2 -o libeebie.so eebie/reader.c eebie/writer.c
+
+install:
+	install -d /usr/local/include/eebie
+	install eebie/*.h /usr/local/include/eebie
+	install libeebie.so /usr/local/lib

eebie/writer.c

@@ -32,7 +32,8 @@ static int bit_length(uint64_t i) {
 }
 
 static uint64_t encode_int(uint64_t i) {
-	return i | VARINT_MASKS[(bit_length(i) + 6) / 7];
+	// bit_length(i + 1) over bit_length(i) because 0xFF... lengths are interpreted as indefinite
+	return i | VARINT_MASKS[(bit_length(i + 1) + 6) / 7];
 }
 
 static void advance(EBMLWriter *this, uint64_t amount) {