File Box2D-fix-version-2.3.1.patch of Package Box2D
--- CMakeLists.txt.orig 2014-04-06 02:43:12.000000000 +0200 +++ CMakeLists.txt 2015-12-16 20:57:28.800666424 +0100 @@ -14,7 +14,7 @@ option(BOX2D_BUILD_STATIC "Build Box2D static libraries" ON) option(BOX2D_BUILD_EXAMPLES "Build Box2D examples" ON) -set(BOX2D_VERSION 2.3.0) +set(BOX2D_VERSION 2.3.1) set(LIB_INSTALL_DIR lib${LIB_SUFFIX}) # The Box2D library.