linux-kernel - Re: [PATCH v1] tools/hv: async name resolution in kvp

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Date:   Sat, 2 Nov 2019 00:18:56 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Olaf Hering <olaf@...fle.de>
Cc:     "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "open list:Hyper-V CORE AND DRIVERS" <linux-hyperv@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1] tools/hv: async name resolution in kvp_daemon

On Mon, Oct 28, 2019 at 06:49:55PM +0100, Olaf Hering wrote:
>Am Mon, 28 Oct 2019 12:17:54 -0400
>schrieb Sasha Levin <sashal@...nel.org>:
>
>> undefined reference to `pthread_create'
>
>Does "make V=1 -C tools/hv" work for you?
>This is what I use.

It works before I apply this patch, but breaks after:

$ make V=1 -C tools/hv
make: Entering directory '/home/sasha/linux/tools/hv'
make -f /home/sasha/linux/tools/build/Makefile.build dir=. obj=hv_kvp_daemon
make[1]: Entering directory '/home/sasha/linux/tools/hv'
  gcc -Wp,-MD,./.hv_kvp_daemon.o.d -Wp,-MT,hv_kvp_daemon.o -O2 -Wall -g -D_GNU_SOURCE -Iinclude -D"BUILD_STR(s)=#s" -c -o hv_kvp_daemon.o hv_kvp_daemon.c
   ld -r -o hv_kvp_daemon-in.o  hv_kvp_daemon.o
make[1]: Leaving directory '/home/sasha/linux/tools/hv'
gcc -O2 -Wall -g -D_GNU_SOURCE -Iinclude  hv_kvp_daemon-in.o -o hv_kvp_daemon
make -f /home/sasha/linux/tools/build/Makefile.build dir=. obj=hv_vss_daemon
make[1]: Entering directory '/home/sasha/linux/tools/hv'
  gcc -Wp,-MD,./.hv_vss_daemon.o.d -Wp,-MT,hv_vss_daemon.o -O2 -Wall -g -D_GNU_SOURCE -Iinclude -D"BUILD_STR(s)=#s" -c -o hv_vss_daemon.o hv_vss_daemon.c
   ld -r -o hv_vss_daemon-in.o  hv_vss_daemon.o
make[1]: Leaving directory '/home/sasha/linux/tools/hv'
gcc -O2 -Wall -g -D_GNU_SOURCE -Iinclude  hv_vss_daemon-in.o -o hv_vss_daemon
make -f /home/sasha/linux/tools/build/Makefile.build dir=. obj=hv_fcopy_daemon
make[1]: Entering directory '/home/sasha/linux/tools/hv'
  gcc -Wp,-MD,./.hv_fcopy_daemon.o.d -Wp,-MT,hv_fcopy_daemon.o -O2 -Wall -g -D_GNU_SOURCE -Iinclude -D"BUILD_STR(s)=#s" -c -o hv_fcopy_daemon.o hv_fcopy_daemon.c
   ld -r -o hv_fcopy_daemon-in.o  hv_fcopy_daemon.o
make[1]: Leaving directory '/home/sasha/linux/tools/hv'
gcc -O2 -Wall -g -D_GNU_SOURCE -Iinclude  hv_fcopy_daemon-in.o -o hv_fcopy_daemon
make: Leaving directory '/home/sasha/linux/tools/hv'
$ git am ~/incoming/_PATCH_v1_tools-hv_async_name_resolution_in_kvp_daemon.patch
Applying: tools/hv: async name resolution in kvp_daemon
$ make V=1 -C tools/hv
make: Entering directory '/home/sasha/linux/tools/hv'
make -f /home/sasha/linux/tools/build/Makefile.build dir=. obj=hv_kvp_daemon
make[1]: Entering directory '/home/sasha/linux/tools/hv'
  gcc -Wp,-MD,./.hv_kvp_daemon.o.d -Wp,-MT,hv_kvp_daemon.o -O2 -Wall -g -D_GNU_SOURCE -Iinclude -D"BUILD_STR(s)=#s" -c -o hv_kvp_daemon.o hv_kvp_daemon.c
   ld -r -o hv_kvp_daemon-in.o  hv_kvp_daemon.o
make[1]: Leaving directory '/home/sasha/linux/tools/hv'
gcc -O2 -Wall -g -D_GNU_SOURCE -Iinclude -lpthread hv_kvp_daemon-in.o -o hv_kvp_daemon
/usr/bin/ld: hv_kvp_daemon-in.o: in function `kvp_obtain_domain_name':
/home/sasha/linux/tools/hv/hv_kvp_daemon.c:1372: undefined reference to `pthread_create'
/usr/bin/ld: /home/sasha/linux/tools/hv/hv_kvp_daemon.c:1377: undefined reference to `pthread_detach'
collect2: error: ld returned 1 exit status
make: *** [Makefile:36: hv_kvp_daemon] Error 1
make: Leaving directory '/home/sasha/linux/tools/hv'

-- 
Thanks,
Sasha