add --disable-example

[ffontaine]

Add --disable-example to be able to build daq on toolchains without threads support

Signed-off-by: Fabrice Fontaine fontaine.fabrice@gmail.com

[snortadmin]

This is to avoid a pthread dependency? Threading is kinda fundamental to the mission. What are you doing that you can't / won't provide the dependency?

[ffontaine]

The build failure is raised by buildroot autobuilders because all kind of embedded toolchains are tested and some of them can be built without threads support (e.g. uclibc). From my understanding of daq code, threads are only mandatory with pcap module and with this example but I can add a dependency to threads on daq if you think that this is best course of action.

[ffontaine]

Should I close this PR and disable daq on toolchains without threads on buildroot?

[snortadmin]

I think we want to do something for those toolchains. Not sure we should just change it to --disable-threads or do some autodetect foo.

@Xiche - thoughts?

[Xiche]

Looks reasonable to me like this. Autoconf checks for threading seems too special case to be worth it, but a switch to disable the examples seems reasonable.

[ffontaine]

Finally, I'm closing this PR as I found out that afpacket and bpf modules also depend on threads if libpcap is found. So, I'll had a threads dependency in buildroot.

[snortadmin]

Thanks for following up.