AS_IF([test "x$_LIPO" = x], [AC_MSG_ERROR([You need lipo])])
AC_CHECK_TOOLS([_NM], [nm])
AS_IF([test "x$_NM" = x], [AC_MSG_ERROR([You need nm])])
AS_IF([test "x$_LIPO" = x], [AC_MSG_ERROR([You need lipo])])
AC_CHECK_TOOLS([_NM], [nm])
AS_IF([test "x$_NM" = x], [AC_MSG_ERROR([You need nm])])