MariaDB 10.1.19 fails to build at lf_alloc-pin.c.i on powerpc

# # cmake . -DBUILD_CONFIG=mysql_release

# make

[ 10%] Building C object mysys/CMakeFiles/mysys.dir/lf_alloc-pin.c.o

cd /home/mariadb-10.1.19/mysys && /usr/bin/cc  -DHAVE_CONFIG_H -I/home/mariadb-10.1.19/include -I/home/mariadb-10.1.19/mysys  -pie -fPIC -Wl,-z,relro,-z,now -fstack-protector --param=ssp-buffer-size=4 -DWITH_INNODB_DISALLOW_WRITES -O3 -g -static-libgcc -fno-omit-frame-pointer -fno-strict-aliasing  -Wno-uninitialized -D_FORTIFY_SOURCE=2 -DDBUG_OFF   -fPIC -o CMakeFiles/mysys.dir/lf_alloc-pin.c.o   -c /home/mariadb-10.1.19/mysys/lf_alloc-pin.c

In file included from /home/mariadb-10.1.19/include/lf.h:19:0,

                 from /home/mariadb-10.1.19/mysys/lf_alloc-pin.c:104:

/home/mariadb-10.1.19/include/my_atomic.h:121:2: error: #error atomic ops for this platform are not implemented

 #error atomic ops for this platform are not implemented

  ^~~~~

/home/mariadb-10.1.19/include/my_atomic.h: In function ‘my_atomic_cas32’:

/home/mariadb-10.1.19/include/my_atomic.h:209:3: warning: implicit declaration of function ‘make_atomic_cas_body’ [-Wimplicit-function-declaration]

   make_atomic_cas_body(S);                                      \

   ^

/home/mariadb-10.1.19/include/my_atomic.h:248:1: note: in expansion of macro ‘make_atomic_cas’

 make_atomic_cas(32)

 ^~~~~~~~~~~~~~~

/home/mariadb-10.1.19/include/my_atomic.h: In function ‘my_atomic_casptr’:

/home/mariadb-10.1.19/include/my_atomic.h:250:17: error: ‘ptr’ undeclared (first use in this function)

 make_atomic_cas(ptr)

                 ^

/home/mariadb-10.1.19/include/my_atomic.h:209:24: note: in definition of macro ‘make_atomic_cas’

   make_atomic_cas_body(S);                                      \

                        ^

/home/mariadb-10.1.19/include/my_atomic.h:250:17: note: each undeclared identifier is reported only once for each function it appears in

 make_atomic_cas(ptr)

                 ^

/home/mariadb-10.1.19/include/my_atomic.h:209:24: note: in definition of macro ‘make_atomic_cas’

   make_atomic_cas_body(S);                                      \

                        ^

mysys/CMakeFiles/mysys.dir/build.make:2198: recipe for target 'mysys/CMakeFiles/mysys.dir/lf_alloc-pin.c.o' failed

make[2]: *** [mysys/CMakeFiles/mysys.dir/lf_alloc-pin.c.o] Error 1

make[2]: Leaving directory '/home/mariadb-10.1.19'

CMakeFiles/Makefile2:7447: recipe for target 'mysys/CMakeFiles/mysys.dir/all' failed

make[1]: *** [mysys/CMakeFiles/mysys.dir/all] Error 2

make[1]: Leaving directory '/home/mariadb-10.1.19'

Makefile:160: recipe for target 'all' failed

make: *** [all] Error 2