diff --git a/include/osmpbf/osmpbf.h b/include/osmpbf/osmpbf.h
index e354907..9dd8de1 100644
--- a/include/osmpbf/osmpbf.h
+++ b/include/osmpbf/osmpbf.h
@@ -7,10 +7,9 @@
 // this describes the high-level OSM objects
 #include <osmpbf/osmformat.pb.h>
 
-namespace OSMPBF {
+#define OSMPBF_VERSION "1.3.0"
 
-    // library version
-    const char *version = "1.3.0";
+namespace OSMPBF {
 
     // the maximum size of a blob header in bytes
     const int max_blob_header_size = 64 * 1024; // 64 kB
diff --git a/src/Makefile b/src/Makefile
index 16c3e97..a735f45 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,6 +1,6 @@
 
-CXX = g++
-CXXFLAGS = -O3
+CXXFLAGS += -O3 -fPIC
+
 AR = ar
 
 all: libosmpbf.a ../include/osmpbf/fileformat.pb.h ../include/osmpbf/osmformat.pb.h