Where is C header file tlpi_hdr.h? [closed]

I want to compile the following code with gcc:

/**********************************************************************\
*                Copyright (C) Michael Kerrisk, 2010.                  *
*                                                                      *
* This program is free software. You may use, modify, and redistribute *
* it under the terms of the GNU Affero General Public License as       *
* published by the Free Software Foundation, either version 3 or (at   *
* your option) any later version. This program is distributed without  *
* any warranty. See the file COPYING for details.                      *
\**********************************************************************/

/* copy.c
   Copy the file named argv[1] to a new file named in argv[2].
*/
#include <sys/stat.h>
#include <fcntl.h>
#include "tlpi_hdr.h"

#ifndef BUF_SIZE                /* Allow "cc -D" to override definition */
#define BUF_SIZE 1024
#endif

int
main(int argc, char *argv[])
{
    int inputFd, outputFd, openFlags;
    mode_t filePerms;
    ssize_t numRead;
    char buf[BUF_SIZE];

    if (argc != 3 || strcmp(argv[1], "--help") == 0)
        usageErr("%s old-file new-file\n", argv[0]);

    /* Open input and output files */

    inputFd = open(argv[1], O_RDONLY);
    if (inputFd == -1)
        errExit("opening file %s", argv[1]);

    openFlags = O_CREAT | O_WRONLY | O_TRUNC;
    filePerms = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP |
                S_IROTH | S_IWOTH;      /* rw-rw-rw- */
    outputFd = open(argv[2], openFlags, filePerms);
    if (outputFd == -1)
        errExit("opening file %s", argv[2]);

    /* Transfer data until we encounter end of input or an error */

    while ((numRead = read(inputFd, buf, BUF_SIZE)) > 0)
        if (write(outputFd, buf, numRead) != numRead)
            fatal("couldn't write whole buffer");
    if (numRead == -1)
        errExit("read");

    if (close(inputFd) == -1)
        errExit("close input");
    if (close(outputFd) == -1)
        errExit("close output");

    exit(EXIT_SUCCESS);
}

gcc copy.c -o copy 

Error:

copy.c:15:10: fatal error: 'tlpi_hdr.h' file not found
#include "tlpi_hdr.h"
         ^~~~~~~~~~~~
1 error generated.

The code came from https://github.com/bradfa/tlpi-dist/blob/78f35620dfe47ec7abc9dbcd9b56d51de4c19f7e/filebuff/copy.c