CXXFLAGS="$CXXFLAGS $CFLAGS $CPPFLAGS"
CXXFLAGS="$CXXFLAGS -fPIC $CPPFLAGS"
CFLAGS="$CFLAGS $CPPFLAGS $C_ONLY_FLAGS"
DEBUG_CXXFLAGS="$CXXFLAGS $DEBUG_CFLAGS $CPPFLAGS"