diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a35b3f3bf..689325a73 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1198,7 +1198,6 @@ set (PCH_SOURCES
events.cpp
GuillotineBinPack.cpp
SkylineBinPack.cpp
- tmpfileplus.cpp
)
enable_precompiled_headers( g_pch.h PCH_SOURCES )
diff --git a/src/sound/mididevices/music_timiditypp_mididevice.cpp b/src/sound/mididevices/music_timiditypp_mididevice.cpp
index 5730c81dc..00975a284 100644
--- a/src/sound/mididevices/music_timiditypp_mididevice.cpp
+++ b/src/sound/mididevices/music_timiditypp_mididevice.cpp
@@ -42,7 +42,6 @@
#include "cmdlib.h"
#include "templates.h"
#include "version.h"
-#include "tmpfileplus.h"
#include "m_misc.h"
#include "v_text.h"
#include "i_system.h"
diff --git a/src/tmpfileplus.cpp b/src/tmpfileplus.cpp
deleted file mode 100644
index 2c14e1563..000000000
--- a/src/tmpfileplus.cpp
+++ /dev/null
@@ -1,201 +0,0 @@
-/* $Id: tmpfileplus.c $ */
-/*
- * $Date: 2016-06-01 03:31Z $
- * $Revision: 2.0.0 $
- * $Author: dai $
- */
-
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright (c) 2012-16 David Ireland, DI Management Services Pty Ltd
- * .
- */
-
-
-/*
-* NAME
-* tmpfileplus - create a unique temporary file
-*
-* SYNOPSIS
-* FILE *tmpfileplus(const char *dir, const char *prefix, char **pathname, int keep)
-*
-* DESCRIPTION
-* The tmpfileplus() function opens a unique temporary file in binary
-* read/write (w+b) mode. The file is opened with the O_EXCL flag,
-* guaranteeing that the caller is the only user. The filename will consist
-* of the string given by `prefix` followed by 10 random characters. If
-* `prefix` is NULL, then the string "tmp." will be used instead. The file
-* will be created in an appropriate directory chosen by the first
-* successful attempt in the following sequence:
-*
-* a) The directory given by the `dir` argument (so the caller can specify
-* a secure directory to take precedence).
-*
-* b) The directory name in the environment variables:
-*
-* (i) "TMP" [Windows only]
-* (ii) "TEMP" [Windows only]
-* (iii) "TMPDIR" [Unix only]
-*
-* c) `P_tmpdir` as defined in [Unix only] (in Windows, this is
-* usually "\", which is no good).
-*
-* d) The current working directory.
-*
-* If a file cannot be created in any of the above directories, then the
-* function fails and NULL is returned.
-*
-* If the argument `pathname` is not a null pointer, then it will point to
-* the full pathname of the file. The pathname is allocated using `malloc`
-* and therefore should be freed by `free`.
-*
-* If `keep` is nonzero and `pathname` is not a null pointer, then the file
-* will be kept after it is closed. Otherwise the file will be
-* automatically deleted when it is closed or the program terminates.
-*
-*
-* RETURN VALUE
-* The tmpfileplus() function returns a pointer to the open file stream,
-* or NULL if a unique file cannot be opened.
-*
-*
-* ERRORS
-* ENOMEM Not enough memory to allocate filename.
-*
-*/
-
-#include "tmpfileplus.h"
-
-#include
-#include
-#include
-#include
-#include
-
-/* Non-ANSI include files that seem to work in both MSVC and Linux */
-#include
-#include
-#include
-
-#ifdef _WIN32
-#include
-#endif
-
-#ifdef _WIN32
-/* MSVC nags to enforce ISO C++ conformant function names with leading "_",
- * so we define our own function names to avoid whingeing compilers...
- */
-#define OPEN_ _open
-#define FDOPEN_ _fdopen
-#else
-#define OPEN_ open
-#define FDOPEN_ fdopen
-#endif
-
-#include "m_random.h"
-#include "cmdlib.h"
-#include "zstring.h"
-
-
-#define RANDCHARS "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
-#define NRANDCHARS (sizeof(RANDCHARS) - 1)
-
-static FRandom pr_tmpfile;
-
-/** Replace each byte in string s with a random character from TEMPCHARS */
-static char *set_randpart(char *s)
-{
- size_t i;
- unsigned int r;
-
-
- for (i = 0; i < strlen(s); i++)
- {
- r = pr_tmpfile() % NRANDCHARS;
- s[i] = (RANDCHARS)[r];
- }
- return s;
-}
-
-/**
- * Try and create a randomly-named file in directory `tmpdir`.
- * If successful, allocate memory and set `tmpname_ptr` to full filepath, and return file pointer;
- * otherwise return NULL.
- * If `keep` is zero then create the file as temporary and it should not exist once closed.
- */
-static FILE *mktempfile_internal(const char *tmpdir, const char *pfx, FString *tmpname_ptr, int keep)
-/* PRE:
- * pfx is not NULL and points to a valid null-terminated string
- * tmpname_ptr is not NULL.
- */
-{
- FILE *fp;
- int fd;
- char randpart[] = "1234567890";
- int i;
- int oflag, pmode;
-
-/* In Windows, we use the _O_TEMPORARY flag with `open` to ensure the file is deleted when closed.
- * In Unix, we use the remove function after opening the file. (This does not work in Windows,
- * which does not allow an open file to be deleted.)
- */
-#ifdef _WIN32
- /* MSVC flags */
- oflag = _O_BINARY|_O_CREAT|_O_RDWR;
- if (!keep)
- oflag |= _O_TEMPORARY;
- pmode = _S_IREAD | _S_IWRITE;
-#else
- /* Standard POSIX flags */
- oflag = O_CREAT|O_RDWR;
- pmode = S_IRUSR|S_IWUSR;
-#endif
-
- if (!tmpdir || !DirExists(tmpdir)) {
- errno = ENOENT;
- return NULL;
- }
-
- FString tempname;
-
- /* If we don't manage to create a file after 10 goes, there is something wrong... */
- for (i = 0; i < 10; i++)
- {
- tempname.Format("%s/%s%s", tmpdir, pfx, set_randpart(randpart));
- fd = OPEN_(tempname, oflag, pmode);
- if (fd != -1) break;
- }
- if (fd != -1)
- { /* Success, so return user a proper ANSI C file pointer */
- fp = FDOPEN_(fd, "w+b");
- errno = 0;
-
-#ifndef _WIN32
- /* [Unix only] And make sure the file will be deleted once closed */
- if (!keep) remove(tempname);
-#endif
-
- }
- else
- { /* We failed */
- fp = NULL;
- }
-
- if (tmpname_ptr) *tmpname_ptr = tempname;
- return fp;
-}
-
-/**********************/
-/* EXPORTED FUNCTIONS */
-/**********************/
-
-FILE *tmpfileplus(const char *dir, const char *prefix, FString *pathname, int keep)
-{
- FILE *fp = mktempfile_internal(dir, (prefix ? prefix : "tmp."), pathname, keep);
- if (!fp && pathname) *pathname = "";
- return fp;
-}
-
diff --git a/src/tmpfileplus.h b/src/tmpfileplus.h
deleted file mode 100644
index 06219edd6..000000000
--- a/src/tmpfileplus.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* $Id: tmpfileplus.h $ */
-/*
- * $Date: 2016-06-01 03:31Z $
- * $Revision: 2.0.0 $
- * $Author: dai $
- */
-
-/*
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/.
- *
- * Copyright (c) 2012-16 David Ireland, DI Management Services Pty Ltd
- * .
- */
-
-#if _MSC_VER > 1000
-#pragma once
-#endif
-
-#ifndef TMPFILEPLUS_H_
-#define TMPFILEPLUS_H_
-
-#include
-
-class FString;
-
-/** Create a unique temporary file.
-@param dir (optional) directory to create file. If NULL use default TMP directory.
-@param prefix (optional) prefix for file name. If NULL use "tmp.".
-@param pathname (optional) pointer to a buffer to receive the temp filename.
- Allocated using `malloc()`; user to free. Ignored if NULL.
-@param keep If `keep` is nonzero and `pathname` is not NULL, then keep the file after closing.
- Otherwise file is automatically deleted when closed.
-@return Pointer to stream opened in binary read/write (w+b) mode, or a null pointer on error.
-@exception ENOMEM Not enough memory to allocate filename.
-*/
-FILE *tmpfileplus(const char *dir, const char *prefix, FString *pathname, int keep);
-
-
-#define TMPFILE_KEEP 1
-
-#endif /* end TMPFILEPLUS_H_ */