Nginx and libatomic

[dyadaval]

Hello,
Without stream modules, nginx cross compiles well.
 
With stream modules, I see the below error:
buildmachine:nginx-1.12.0_ppc[sim-qnx-r18.x]$vim src/core/ngx_rwlock.c
buildmachine:nginx-1.12.0_ppc[sim-qnx-r18.x]$make
make -f objs/Makefile
make[1]: Entering directory '/home/dyadavalli/nginx/nginx-1.12.0_ppc'
qcc -c -V 4.4.2,gcc_ntoppcbe -DNGX_SYS_NERR=135 -DNGX_HAVE_MAP_ANON
-DNGX_PTR_SIZE=4 -DNGX_SIZE_T_LEN=10 -DNGX_MAX_SIZE_T_VALUE=2147483647
-DNGX_MAX_OFF_T_VALUE=2147483647 -DNGX_MAX_TIME_T_VALUE=2147483647
-DNGX_OFF_T_LEN=10 -DNGX_TIME_T_LEN=10 -DNGX_HAVE_MSGHDR_MSG_CONTROL
-I~/myopenssl_ppc/include/ -I src/core -I src/event -I src/event/modules -I
src/os/unix -I /home/dyadavalli/nginx-1.12.0_ppc/nginx_conf -I
/home/dyadavalli/myopenssl_ppc/include -I objs \
        -o objs/src/core/ngx_rwlock.o \
        src/core/ngx_rwlock.c
src/core/ngx_rwlock.c:116:2: error: #error ngx_atomic_cmp_set() is not
defined!
cc:
/opt/QNX651/host/linux/x86/usr/lib/gcc/powerpc-unknown-nto-qnx6.5.0/4.4.2/cc1
error 1
make[1]: *** [objs/Makefile:619: objs/src/core/ngx_rwlock.o] Error 1
make[1]: Leaving directory '/home/dyadavalli/nginx-1.12.0_ppc'
make: *** [Makefile:8: build] Error 2
buildmachine:nginx-1.12.0_ppc[sim-qnx-r18.x]$

I read that nginx has built in libatomic sources. Could you please tell me
how to use it via configure script.

Thanks for help.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,28343,280581#msg-280581