Compilation on galaxy s10+ Android 9 Pie via makefile error

[cmarshall108]

I ran the build command on the master branch

PORTABLE=1 DEBUG_LEVEL=0 make shared_lib install-shared

Error traceback output log

CC       shared-objects/db/transaction_log_impl.o       CC       shared-objects/db/version_builder.o            CC       shared-objects/db/version_edit.o               CC       shared-objects/db/version_set.o                CC       shared-objects/db/wal_manager.o                CC       shared-objects/db/write_batch.o                CC       shared-objects/db/write_batch_base.o           CC       shared-objects/db/write_controller.o           CC       shared-objects/db/write_thread.o
   CC       shared-objects/env/env.o
  CC       shared-objects/env/env_chroot.o
  CC       shared-objects/env/env_encryption.o
  CC       shared-objects/env/env_hdfs.o                  CC       shared-objects/env/env_posix.o
  CC       shared-objects/env/io_posix.o
env/io_posix.cc:164:9: error: use of undeclared identifier 'fread_unlocked'                                         r = fread_unlocked(scratch, 1, n, file_);
        ^                                               1 error generated.                                      make: *** [Makefile:621: shared-objects/env/io_posix.o] Error 1