diff -Naur boost_1_37_0/tools/build/v2/tools/gcc.jam boost_1_37_0.tpg/tools/build/v2/tools/gcc.jam --- boost_1_37_0/tools/build/v2/tools/gcc.jam 2008-10-16 08:42:03.000000000 +0000 +++ boost_1_37_0.tpg/tools/build/v2/tools/gcc.jam 2008-12-20 10:25:30.000000000 +0000 @@ -292,7 +292,7 @@ # Declare flags and action for compilation. toolset.flags gcc.compile OPTIONS <optimization>off : -O0 ; -toolset.flags gcc.compile OPTIONS <optimization>speed : -O3 ; +toolset.flags gcc.compile OPTIONS <optimization>speed : OPT_FLAGS ; toolset.flags gcc.compile OPTIONS <optimization>space : -Os ; toolset.flags gcc.compile OPTIONS <inlining>off : -fno-inline ;