thodg/libgit2

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f2e293..0377543 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,6 +16,7 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
 
 # Build options
 #
+OPTION( SONAME				"Set the (SO)VERSION of the target"		ON  )
 OPTION( BUILD_SHARED_LIBS	"Build Shared Library (OFF for Static)"	ON  )
 OPTION( THREADSAFE			"Build libgit2 as threadsafe"			OFF )
 OPTION( BUILD_CLAR			"Build Tests using the Clar suite"		ON  )
@@ -264,8 +265,10 @@ TARGET_OS_LIBRARIES(git2)
 
 MSVC_SPLIT_SOURCES(git2)
 
-SET_TARGET_PROPERTIES(git2 PROPERTIES VERSION ${LIBGIT2_VERSION_STRING})
-SET_TARGET_PROPERTIES(git2 PROPERTIES SOVERSION ${LIBGIT2_VERSION_MAJOR})
+IF (SONAME)
+	SET_TARGET_PROPERTIES(git2 PROPERTIES VERSION ${LIBGIT2_VERSION_STRING})
+	SET_TARGET_PROPERTIES(git2 PROPERTIES SOVERSION ${LIBGIT2_VERSION_MAJOR})
+ENDIF()
 CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/libgit2.pc.in ${CMAKE_CURRENT_BINARY_DIR}/libgit2.pc @ONLY)
 
 IF (MSVC_IDE)