netty-tcnative: Problem compiling under ppc64le

For a long time I’m compiling each version of Netty (incl. tcnative) on my own, to create the missing epoll library for ppc64le. Upgraded from 4.1.86.Final to 4.1.94.Final (tcnative 2.0.61.Final) and it stopped compiling, because of Werror flag, which then breaks compilation after this warning:

     [exec] /usr/bin/cc -DBORINGSSL_IMPLEMENTATION -I../third_party/googletest/include -I../crypto/../include -I../crypto/fipsmodule/../../include -Werror -Wformat=2 -Wsign-compare -Wmissing-field-initializers -Wwrite-strings -Wvla -Wshadow -ggdb -Wall -fvisibility=hidden -fno-common -Wno-free-nonheap-object -Wimplicit-fallthrough -Wformat-signedness -Wmissing-prototypes -Wold-style-definition -Wstrict-prototypes -D_XOPEN_SOURCE=700 -O3 -fno-omit-frame-pointer -DOPENSSL_C11_ATOMIC -fPIC -MD -MT crypto/fipsmodule/CMakeFiles/fipsmodule.dir/bcm.c.o -MF crypto/fipsmodule/CMakeFiles/fipsmodule.dir/bcm.c.o.d -o crypto/fipsmodule/CMakeFiles/fipsmodule.dir/bcm.c.o -c ../crypto/fipsmodule/bcm.c
     [exec] In file included from ../crypto/fipsmodule/bcm.c:31:
     [exec] In function ‘OPENSSL_memset’,
     [exec]     inlined from ‘bn_big_endian_to_words.constprop’ at ../crypto/fipsmodule/bn/bytes.c:76:7,
     [exec]     inlined from ‘BN_bin2bn.constprop’ at ../crypto/fipsmodule/bn/bytes.c:115:3:
     [exec] ../crypto/fipsmodule/../internal.h:857:10: error: ‘memset’ specified size 18446744073709551608 exceeds maximum object size 9223372036854775807 [-Werror=stringop-overflow=]
     [exec]    return memset(dst, c, n);
     [exec]           ^~~~~~~~~~~~~~~~~
     [exec] cc1: all warnings being treated as errors
     [exec] ninja: build stopped: subcommand failed.

OS: CentOS Linux release 8.5.2111 Linux 4.18.0-348.7.1.el8_5.ppc64le #1 SMP Wed Dec 22 13:41:57 UTC 2021 ppc64le ppc64le ppc64le GNU/Linux

GCC: gcc (GCC) 8.5.0 20210514 (Red Hat 8.5.0-4)