Taken from Debian:
https://salsa.debian.org/multimedia-team/taopm/-/raw/master/debian/patches/01-add-missing-headers.diff

Description: Adding missing headers
Author: Tiago Bortoletto Vaz <tiago@debian.org>
Last-Update: 2013-04-17
--- a/libtao/Tao.cc
+++ b/libtao/Tao.cc
@@ -18,6 +18,7 @@
 
 #include "Tao.h"
 #include <iostream>
+#include <stdio.h>
 
 extern Tao tao;
 float &Time = tao.synthesisEngine.time;
--- a/libtao/TaoDevice.cc
+++ b/libtao/TaoDevice.cc
@@ -20,6 +20,7 @@
 #include "Tao.h"
 #include "TaoAccessPoint.h"
 #include "TaoInstrument.h"
+#include <cstring>
 
 TaoDevice::TaoDevice()
     {
--- a/libtao/TaoInstrument.cc
+++ b/libtao/TaoInstrument.cc
@@ -23,6 +23,7 @@
 //#include <sys/types.h>
 #include <iostream>
 #include <cmath>
+#include <cstring>
 
 float TaoInstrument::defaultMass=3.5;		// Set to optimum value for
                                                 // frequency response of
--- a/libtao/TaoOutput.cc
+++ b/libtao/TaoOutput.cc
@@ -24,6 +24,7 @@
 #include <fstream>
 #include "TaoOutput.h"
 #include "Tao.h"
+#include <cstring>
 
 extern Tao tao;
 
--- a/libtao/TaoPitch.cc
+++ b/libtao/TaoPitch.cc
@@ -30,6 +30,7 @@
 #include "TaoPitch.h"
 #include <iostream>
 #include <cmath>
+#include <cstring>
 
 // This class allows pitches and frequencies to be specified in a number of
 // different formats including the following:
--- a/taoparse/taoparser.yy
+++ b/taoparse/taoparser.yy
@@ -19,7 +19,8 @@
 
 #include <iostream>
 #include <sstream>
-#include <string>
+#include <cstring>
+#include <stdio.h>
 #include "taoparserdefs.h"
 
 int yyerror(char *s);
--- a/libtao/TaoGraphicsEngine.cc
+++ b/libtao/TaoGraphicsEngine.cc
@@ -27,7 +27,8 @@
 #include "TaoInstrument.h"
 #include "TaoAccessPoint.h"
 #include "TaoDevice.h"
-#include <string>
+#include <cstring>
+#include <stdio.h>
     
 extern Tao tao;
 extern void taoMasterTick();
--- a/tao2aiff/tao2aiff.cc
+++ b/tao2aiff/tao2aiff.cc
@@ -25,6 +25,8 @@
 #include <cmath>
 #include "audiofile.h"
 #include "tao2aiff.h"
+#include <cstdlib>
+#include <cstring>
 
 
 main(int argc, char **argv)
--- a/tao2wav/tao2wav.cc
+++ b/tao2wav/tao2wav.cc
@@ -25,6 +25,8 @@
 #include <cmath>
 #include "audiofile.h"
 #include "tao2wav.h"
+#include <cstdlib>
+#include <cstring>
 
 main(int argc, char **argv)
     {
/<a href='/guix/log/gnu/packages/rdesktop.scm?id=5664bcdcb0e4c10dfe48dd5e4730fc3c746a21e2'>rdesktop.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/rdesktop.scm?id=5664bcdcb0e4c10dfe48dd5e4730fc3c746a21e2&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-11-19 20:48:26 +0200'>2020-11-19</span></td><td><a href='/guix/commit/gnu/packages/rdesktop.scm?id=8ed4c468ab611409902c00bdf7c21fdb8d312928'>gnu: Don't append '.git' to GitHub uris.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/admin.scm (nmrpflash)[source]: Remove '.git' from URI.
* gnu/packages/aidc.scm (zxing-cpp),
* gnu/packages/assembly.scm (mbuild),
* gnu/packages/audio.scm (opensles, wildmidi, tinyalsa),
* gnu/packages/browser-extensions.scm (ublock-origin-chromium),
* gnu/packages/check.scm (mutest),
* gnu/packages/compression.scm (unshield),
* gnu/packages/coq.scm (subset),
* gnu/packages/dictionaries.scm (translate-shell),
* gnu/packages/disk.scm (memkind),
* gnu/packages/documentation.scm (latex2html),
* gnu/packages/emacs-xyz.scm (emacs-chronometrist,
  emacs-flycheck-ledger, emacs-counsel-notmuch, emacs-spaceline,
  emacs-org-generate),
* gnu/packages/embedded.scm (ebusd, ebusd-configuration),
* gnu/packages/enchant.scm (nuspell),
* gnu/packages/fontutils.scm (woff2),
* gnu/packages/geo.scm (memphis),
* gnu/packages/gimp.scm (mrg),
* gnu/packages/gnome-xyz.scm (gnome-shell-extension-appindicator),
* gnu/packages/gnome.scm (parlatype),
* gnu/packages/golang.scm (go-github-com-tv42-httpunix,
  go-github-com-ayufan-golang-kardianos-service),
* gnu/packages/graphics.scm (eglexternalplatform, egl-wayland, mmm,
  directfb, flux),
* gnu/packages/gstreamer.scm (openni2, ccextractor, libvisual,
  graphene),
* gnu/packages/guile-xyz.scm (guile-srfi-180, guile-torrent),
* gnu/packages/image.scm (openjpeg-data),
* gnu/packages/java.scm (javacc),
* gnu/packages/language.scm (liblouis, liblouisutdml),
* gnu/packages/linux.scm (pamela, ttyebus),
* gnu/packages/lxqt.scm (lxqt-connman-applet),
* gnu/packages/mail.scm (libetpan),
* gnu/packages/man.scm (ronn),
* gnu/packages/music.scm (tascam-gtk, artyfx),
* gnu/packages/networking.scm (srt, lksctp-tools, nng, nanomsg),
* gnu/packages/python-crypto.scm (pure-python-otr),
* gnu/packages/qt.scm (qtspell),
* gnu/packages/raspberry-pi.scm (raspi-gpio, raspi-open-firmware),
* gnu/packages/rdp.scm (freerdp),
* gnu/packages/ruby.scm (ruby-prawn-templates, ruby-treetop, ruby-gimme,
  ruby-standard, ruby-rubocop-ast, ruby-rexml, ruby-range-compressor,
  ruby-regexp-property-values, ruby-regexp-parser, ruby-rubocop,
  ruby-pdf-reader, ruby-pdf-inspector, ruby-prawn),
* gnu/packages/syncthing.scm (syncthing-gtk),
* gnu/packages/video.scm (svt-hevc, mediasdk, libvideogfx, libde265,
  tslib),
* gnu/packages/xml.scm (libxmlb, libxmlplusplus)[source]: Same.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-10-04 14:35:23 +0200'>2020-10-04</span></td><td><a href='/guix/commit/gnu/packages/rdesktop.scm?id=10ec0ac656986eb606b1b3b1a21808bb2c66cd16'>gnu: freerdp: Update to 2.2.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/rdesktop.scm (freerdp): Update to 2.2.0.
[inputs]: Add libusb.
[arguments]: Remove unused WITH_SYSTEMD configure flag.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>