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)
     {
3&amp;showmsg=1'>gnu</a>/<a href='/guix/log/gnu/packages?id=041a12c46b77094c3a89276cf55d9cf1f68fb9a3&amp;showmsg=1'>packages</a>/<a href='/guix/log/gnu/packages/ncdu.scm?id=041a12c46b77094c3a89276cf55d9cf1f68fb9a3&amp;showmsg=1'>ncdu.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/ncdu.scm?id=041a12c46b77094c3a89276cf55d9cf1f68fb9a3'>Collapse</a>)</th><th class='left'>Author</th></tr>
<tr class='logheader'><td><span title='2020-07-01 17:52:40 +0200'>2020-07-01</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/ncdu.scm?id=e75d8234e7184070d20645baf8ab55257a731b25'>gnu: ncdu: Fix up synopsis &amp; description.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/ncdu.scm (ncdu)[synopsis]: Fix typo.
[description]: Start with a proper sentence.  Double-space.


</td></tr>
<tr class='logheader'><td><span title='2020-07-01 17:52:40 +0200'>2020-07-01</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/ncdu.scm?id=57e0b9e87c37692beb4f37ff668fe3a0b9b1d668'>gnu: ncdu: Update to 1.15.1.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/ncdu.scm (ncdu): Update to 1.15.1.


</td></tr>
<tr class='logheader'><td><span title='2020-06-03 20:45:20 +0200'>2020-06-03</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/ncdu.scm?id=5122961329906dd1cd721ad3d0659ce4038f6cc8'>gnu: ncdu: Update to 1.15.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/ncdu.scm (ncdu): Update to 1.15.


</td></tr>
<tr class='logheader'><td><span title='2020-02-17 21:56:57 +0100'>2020-02-17</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/ncdu.scm?id=aa7773402328920f79feebc380e750226cbda5ec'>gnu: ncdu: Update to 1.14.2.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/ncdu.scm (ncdu): Update to 1.14.2.


</td></tr>