[yocto] advice on recipe for shared lib mDNSResponder

[Steve Pavao]

Hello,

Thanks so much for the great and useful information from you and Ross.

I was unable to successfully build that recipe here, though.  I’ll check with the maintainers to ask why.

All I did was clone the meta-intel-iot-middleware repo, add that layer to bblayers.conf, and add mdns to IMAGE_INSTALL_append to get this far.

- Steve Pavao
Korg R&D


Build Configuration:
BB_VERSION        = "1.34.0"
BUILD_SYS         = "x86_64-linux"
NATIVELSBSTRING   = "universal"
TARGET_SYS        = "aarch64-poky-linux"
MACHINE           = "raspberrypi3-64"
DISTRO            = "poky"
DISTRO_VERSION    = "2.3.2"
TUNE_FEATURES     = "aarch64"
TARGET_FPU        = ""
meta              
meta-poky         
meta-yocto-bsp    = "pyro:072430b9b3a78b318b66371c36e2986d2ed5cba4"
meta-oe           
meta-python       
meta-multimedia   = "pyro:5e82995148a2844c6f483ae5ddd1438d87ea9fb7"
meta-intel-iot-middleware = "master:fc8eabfa4fb54802d3f97123b9d2954450175e33"
meta-raspberrypi  = "pyro:c981f01a2cdb3299eb57920cffbb5dfd4248209a"

Initialising tasks: 100% |#############################################################################################################| Time: 0:00:10
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
ERROR: mdns-544-r1 do_compile: oe_runmake failed
ERROR: mdns-544-r1 do_compile: Function failed: do_compile (log file is located at /data/development/lfs/yocto/poky/build/tmp/work/aarch64-poky-linux/mdns/544-r1/temp/log.do_compile.10472)
ERROR: Logfile of failure stored in: /data/development/lfs/yocto/poky/build/tmp/work/aarch64-poky-linux/mdns/544-r1/temp/log.do_compile.10472
Log data follows:
| DEBUG: Executing shell function do_compile
| NOTE: make os=linux DEBUG=0
| ERROR: oe_runmake failed
| make: cc: Command not found
| Makefile:494: recipe for target 'objects/prod/PosixDaemon.c.o' failed
| make: *** [objects/prod/PosixDaemon.c.o] Error 127
| WARNING: exit code 1 from a shell command.
| ERROR: Function failed: do_compile (log file is located at /data/development/lfs/yocto/poky/build/tmp/work/aarch64-poky-linux/mdns/544-r1/temp/log.do_compile.10472)
ERROR: Task (/data/development/lfs/yocto/poky/meta-intel-iot-middleware/recipes-connectivity/mdns/mdns_544.bb:do_compile) failed with exit code '1'


> On Sep 27, 2017, at 7:17 PM, Andre McCurdy <armccurdy at gmail.com> wrote:
> 
> On Wed, Sep 27, 2017 at 3:58 PM, Steve Pavao <stevep at korgrd.com> wrote:
>> Hello,
>> 
>> I am fairly new to Yocto, yet have been able to successfully add a custom kernel object to my Yocto poky build, no problem. However, I am having some difficulty adding a shared library, namely mDNSResponder.
>> 
>> Right now, my recipe is very simple and does not use autotools.  There are just a few tweaks for cross-building which I’ve added to the supplied mDNSResponder Makefile for mDNSPosix, in order to target 64-bit ARM hardware.  Here is the build error I encounter.  Obviously the environment is not being set 100% correctly, because it can not find stdio.h.  Is there an easy way to avoid this problem?
> 
> You need to ensure that the Makefiles etc for the package you are
> building respect the ${CC} environment variable defined by OE. It
> includes not only the name of the cross compiler but also important
> command line options, e.g. tuning for the correct target CPU and the
> correct --sysroot option. From your build log the --sysroot option is
> missing, therefore the compiler can not find standard include files
> etc.
> 
> Unfortunately packages with build with custom Makefiles are so diverse
> that there's no single approach to making them work. Sometimes you can
> force CC=${CC} etc via the make command line to over-ride incorrect
> defaults in the Makefile, sometime the Makefile needs to be patched,
> etc. Even if the build succeeds it's wise to carefully check the build
> log to ensure that all calls to the compiler, linker, etc contain the
> flags defined by OE.
> 
> Note however that according to the layer index there does already seem
> to be at least one recipe for mDNSResponder. It includes a Makefile
> patch which looks like it will address your issue (and some others):
> 
>  http://git.yoctoproject.org/cgit/cgit.cgi/meta-intel-iot-middleware/tree/recipes-connectivity/mdns/mdns_544.bb?h=master
> 
>> 
>> - Steve Pavao
>> Korg R&D
>> 
>> Log data follows:
>> | DEBUG: Executing shell function do_compile
>> | NOTE: make -j 4
>> | ERROR: oe_runmake failed
>> | make os=EmbeddedLinuxAarch64 Daemon libdns_sd -C mDNSPosix
>> | make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.
>> | make[1]: Entering directory '/data/development/lfs/yocto/poky/build/tmp/work/aarch64-poky-linux/mDNSResponder/333.10-r0/mDNSPosix'
>> | aarch64-poky-linux-gcc -I../mDNSCore -I../mDNSShared -Iobjects/prod/EmbeddedLinuxAarch64 -fwrapv -W -Wall -DPID_FILE=\"/var/run/mdnsd.pid\" -DMDNS_UDS_SERVERPATH=\"/var/run/mdnsd\" -DNOT_HAVE_SA_LEN -DUSES_NETLINK -DHAVE_LINUX -DTARGET_OS_LINUX -fno-strict-aliasing -Os -DMDNS_DEBUGMSGS=0   -c -o objects/prod/EmbeddedLinuxAarch64/PosixDaemon.c.o PosixDaemon.c
>> | PosixDaemon.c:31:19: fatal error: stdio.h: No such file or directory
>> |  #include <stdio.h>
>> |                    ^
>> | compilation terminated.
>> | Makefile:553: recipe for target 'objects/prod/EmbeddedLinuxAarch64/PosixDaemon.c.o' failed
>> | make[1]: *** [objects/prod/EmbeddedLinuxAarch64/PosixDaemon.c.o] Error 1
>> --
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