thodg/libgit2

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 730fe4b..6e48adb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -72,6 +72,8 @@ IF (WIN32 AND NOT CYGWIN)
     FILE(GLOB SRC_PLAT src/win32/*.c)
 ENDIF ()
 
+ADD_DEFINITIONS(-D_FILE_OFFSET_BITS=64)
+
 # Compile and link libgit2
 ADD_LIBRARY(git2 ${SRC} ${SRC_PLAT} ${SRC_SHA1} ${SRC_ZLIB})
 TARGET_LINK_LIBRARIES(git2 ${CMAKE_THREAD_LIBS_INIT})
diff --git a/src/common.h b/src/common.h
index b6a6b4d..b6d8ae3 100644
--- a/src/common.h
+++ b/src/common.h
@@ -2,10 +2,6 @@
 #define INCLUDE_common_h__
 
 #include "git2/common.h"
-
-/** Force 64 bit off_t size on POSIX. */
-#define _FILE_OFFSET_BITS 64
-
 #include "git2/thread-utils.h"
 #include "cc-compat.h"