Description of problem:

Just been trying to rebuild mysql 5.7.1{3,4} on current Fedora rawhide.
Compilation seems it fails in myisam support:

[  7%] Building C object mysys/CMakeFiles/mysys.dir/my_lib.c.o
cd /home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/debug/mysys && /usr/bin/cc  -DHAVE_CONFIG_H -DHAVE_LIBEVENT1 -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -I/home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/debug/include -I/home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/extra/rapidjson/include -I/home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/debug/libbinlogevents/include -I/home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/libbinlogevents/export -I/home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/include -I/home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/mysys  -g -pipe -Wall -Werror=format-security   -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic -fPIC -Wall -Wextra -Wformat-security -Wvla -Wwrite-strings -Wdeclaration-after-statement -Werror -g -fabi-version=2 -fno-omit-frame-pointer -fno-strict-aliasing -DENABLED_DEBUG_SYNC   -o CMakeFiles/mysys.dir/my_lib.c.o   -c /home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/mysys/my_lib.c
/home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/mysys/my_lib.c: In function 'my_dir':
/home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/mysys/my_lib.c:127:3: error: 'readdir_r' is deprecated [-Werror=deprecated-declarations]
   while (!(READDIR(dirp,(struct dirent*) dirent_tmp,dp)))
   ^~~~~
In file included from /usr/include/features.h:368:0,
                 from /usr/include/stdio.h:27,
                 from /home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/include/my_global.h:41,
                 from /home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/mysys/mysys_priv.h:19,
                 from /home/tkloczko/rpmbuild/BUILD/mysql-5.7.14/mysql-5.7.14/mysys/my_lib.c:19:
/usr/include/dirent.h:189:12: note: declared here
 extern int __REDIRECT (readdir_r,
            ^
cc1: all warnings being treated as errors

Version-Release number of selected component (if applicable):


How reproducible:
Try to compile something using <dirent.h>

Steps to Reproduce:
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Actual results:


Expected results:


Additional info: