Can't build minimal buildset for libbsd on IMXRT

[dufault at hda.com]

> On Jun 11, 2021, at 08:07 , Christian Mauderer <oss at c-mauderer.de> wrote:
> 
> Hello Peter,
> 
> On 11/06/2021 13:23, Peter Dufault wrote:
>> I tried to build the "minimal" buildset for the IMXRT BSP and I get undefined INET6 references - _bsd_inet6_pfil_hook, _bsd_ip6stat, etc.  Only two executables are created - swi01.exe and timeout01.exe.  For "default" (almost) everything builds except for a few that won't fit in RAM but I don't currently have enough RAM to run anything so I figured my first step should be to build "minimal".
> 
> I just tried it with beagle bone black: The minimal buildset builds fine. Can you tell from the output who is referencing the inet6_pfil_hook and ip6stat?

Let's look at inet6_pfil_hook.  It's only called in "if_bridge.c" by bridge_pfil, bridge_fragment, bridge_dummynet, bridge_broadcast, bridge_ioctl, bridge_ioctl_add, bridge_forward, and bridge_input.

These are all statics.  Is there something going on with inlining and "garbage collecting"?  Do I have C flags messed up?  I'm not sure how this is works as I see that "_bsd_inet6_pfil_hook" is defined in ip6_input.c and the object is in the built libbsd.a.  I see there's some -Bstatic and -Bdynamic stuff going on in the link.

Start of the link of netshell01.  I can send more info if you'd like, I don't want to swamp the list.

[1147/1178] Linking build/arm-rtems6-imxrt1052-minimal/netshell01.exe
06:29:59 runner ['/opt/flatland/opt/rtems-6/bin/arm-rtems6-gcc', '-mthumb', '-mcpu=cortex-m7', '-mfpu=fpv5-d16', '-mfloat-abi=hard', '-I/opt/flatland/opt/rtems-6/arm-rtems6/imxrt1052/lib/include', '-MMD', '-B/opt/flatland/opt/rtems-6/arm-rtems6/imxrt1052/lib', '-qrtems', '-Wl,--gc-sections', 'testsuite/netshell01/test_main.c.65.o', 'testsuite/netshell01/shellconfig.c.65.o', '-o/home/dufault/development/rtems/rtems-libbsd/build/arm-rtems6-imxrt1052-minimal/netshell01.exe', '-Wl,-Bstatic', '-L.', '-lbsd', '-Wl,-Bdynamic', '-lbsd', '-lm', '-lz', '-lrtemstest']
/opt/flatland/opt/rtems-6/lib/gcc/arm-rtems6/10.3.1/../../../../arm-rtems6/bin/ld: ./libbsd.a(if_bridge.c.17.o): in function `bridge_pfil':
/home/dufault/development/rtems/rtems-libbsd/build/arm-rtems6-imxrt1052-minimal/../../freebsd/sys/net/if_bridge.c:3346: undefined reference to `_bsd_inet6_pfil_hook'


> 
>> The configure command is:
>> ./waf configure --rtems-tools=bla/rtems-6 --rtems=bla/rtems-6 --rtems-bsps=arm/imxrt1052 --buildset=buildset/minimal.ini
> 
> Looks OK.
> 
>> The libbsd is a recent 6-freebsd=12
>> is "minimal" built regularly?  Any hints?
> 
> No it is not build regularly. I think the buildset are often forgotten if someone works on libbsd. For example "everything" doesn't build at the moment.
> 
> Best regards
> 
> Christian
> 
>> Peter
>> -----------------
>> Peter Dufault
>> HD Associates, Inc.      Software and System Engineering
>> This email is delivered through the public internet using protocols subject to interception and tampering.
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Peter
-----------------
Peter Dufault
HD Associates, Inc.      Software and System Engineering

This email is delivered through the public internet using protocols subject to interception and tampering.

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