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)
     {
nu/packages/avahi.scm?id=df8dd9caedc894be74e6c3ed8dcb79c8fde774de'>avahi.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/avahi.scm?id=df8dd9caedc894be74e6c3ed8dcb79c8fde774de&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-05-29 09:25:51 +0200'>2023-05-29</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=77fe306c66eea88acd4b29dd0e60bbf9d7bae101'>gnu: avahi: Support for cross-building and the Hurd.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/avahi.scm (avahi)[inputs]: Include libcap only for supported
systems and when not cross-building.
[arguments]: Add --disable-autoipd when not using libcap.
</span></span></td><td>Janneke Nieuwenhuizen</td></tr>
<tr><td><span title='2022-01-10 11:44:30 -0500'>2022-01-10</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=756188a8da7e3cf4a784dab4eab05799eb2f2dd5'>gnu: avahi: Make all arguments unconditional.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/avahi.scm (avahi)[origin]: Fix indentation
and remove trailing #t.
[arguments]: Re-integrate conditional arguments.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-09-20 11:15:08 +0000'>2021-09-20</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=0636f02b0e33aed9b2f951bc91ded0fe8a7d1654'>gnu: avahi: Use the cross-compiled bash.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/avahi.scm (avahi)[arguments]&lt;#:phases&gt;{patch-more-shebangs}:
  Replace the bash in the shebangs in "/etc/avahi" with a cross-compiled bash.
</span></span></td><td>Maxime Devos</td></tr>
<tr><td><span title='2021-09-20 11:15:08 +0000'>2021-09-20</span></td><td><a href='/guix/commit/gnu/packages/avahi.scm?id=0515ebb0d17f4350b094cace66d5469640029da7'>gnu: avahi: Find 'TARGET-pkg-config' when cross-compiling.</a><span class='msg-avail'>...<span class='msg-tooltip'>The configure script first tests whether "pkg-config" is in PATH,
and then uses "TARGET-pkg-config".  Pretend "pkg-config" exists.

* gnu/packages/avahi.scm (avah)[arguments]&lt;#:configure-flags&gt;: Set
  ac_cv_prog_have_pkg_config=yes when cross-compiling.
</span></span></td><td>Maxime Devos</td></tr>