AS_IF([test "$ac_cv_safe_to_use_wconversion_" = "yes"],
[W_CONVERSION="-Wconversion"
AC_CACHE_CHECK([whether it is safe to use -Wconversion with htons],
AS_IF([test "$ac_cv_safe_to_use_wconversion_" = "yes"],
[W_CONVERSION="-Wconversion"
AC_CACHE_CHECK([whether it is safe to use -Wconversion with htons],