Re: [bug-inetutils] Ping6 is not built ([SCM] inetutils-1_8-163-gd225085)

[Alfred M. Szmidt]

   > --- a/configure.ac
   > +++ b/configure.ac
   > @@ -367,6 +367,10 @@ else
   >    if test "X$working_icmp6" = "Xyes"; then
   >      IU_CHECK_MACRO(IPV6_RECVHOPLIMIT, [#include <netinet/in.h>], ,
   >               [have_recvhoplimt=yes], [have_recvhoplimt=no])
   > +    IU_CHECK_MACRO(IPV6_2292HOPLIMIT, [#include <netinet/in.h>], , [
   > +      AC_DEFINE([IPV6_HOPLIMIT], IPV6_2292HOPLIMIT,
   > +                [Define to IPV6_HOPLIMIT if not available])
   > +    ], [working_icmp6=no])
   >      if test "X$have_recvhoplimt" = "Xno"; then
   >        IU_CHECK_MACRO(IPV6_HOPLIMIT, [#include <netinet/in.h>], , [
   >          AC_DEFINE([IPV6_RECVHOPLIMIT], IPV6_HOPLIMIT,

   This is badly conceived, unfortunately. This conditional disables ping6
   at least for OpenBSD, GNU/kFreeBSD, and OpenSolaris.

     * Solaris has IPV6_RECVHOPLIMIT, but lacks IPV6_2292HOPLIMIT.

     * OpenBSD, FreeBSD, and kFreeBSD all have IPV6_RECVHOPLIMIT,
       as well as IPV6_2292HOPLIMIT, but the latter is reserved
       for kernel code, unless manually specified.

Ah, that wasn't my intention.  I did sit for a while thinking of the
logic here, and tried it on GNU where we have IPV6_HOPLIMIT and such.
I'll think a bit more, if you have a solution please tell.

   Thus BSD and Solaris will presently fail in building ping6
   by default, in spite of our source being fully functional
   also for them.

Yeah, my fault.