This patch was borrowed from Debian's package:
https://salsa.debian.org/multimedia-team/ableton-link/-/blob/9c65141bf5bba0872811c179af77ac95770352cc/debian/patches/DEBIAN_system_libraries.patch
Description: Drop dependencies on included 3rd-party libs
 upstream includes git-submodules for Catch and ASIO (not found in the tarball).
 on Debian we want to use the system provided libraries.
Author: IOhannes m zmölnig
Origin: Debian
Forwarded: not-needed
Last-Update: 2016-10-26
---
This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
--- ableton-link.orig/cmake_include/AsioStandaloneConfig.cmake
+++ ableton-link/cmake_include/AsioStandaloneConfig.cmake
@@ -1,6 +1,2 @@
 add_library(AsioStandalone::AsioStandalone IMPORTED INTERFACE)
 
-set_property(TARGET AsioStandalone::AsioStandalone APPEND PROPERTY
-  INTERFACE_INCLUDE_DIRECTORIES
-  ${CMAKE_CURRENT_LIST_DIR}/../modules/asio-standalone/asio/include
-)
--- ableton-link.orig/cmake_include/CatchConfig.cmake
+++ ableton-link/cmake_include/CatchConfig.cmake
@@ -1,6 +1,2 @@
 add_library(Catch::Catch IMPORTED INTERFACE)
 
-set_property(TARGET Catch::Catch APPEND PROPERTY
-  INTERFACE_INCLUDE_DIRECTORIES
-  ${CMAKE_SOURCE_DIR}/third_party/catch
-)
ges/vnc.scm?id=fae98f52a866ff6f20b6f227afe9d6bf068e1458'>tree</a><a href='/guix/commit/gnu/packages/vnc.scm?id=fae98f52a866ff6f20b6f227afe9d6bf068e1458'>commit</a><a href='/guix/diff/gnu/packages/vnc.scm?id=fae98f52a866ff6f20b6f227afe9d6bf068e1458'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/vnc.scm'>
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<div class='path'>path: <a href='/guix/log/?id=fae98f52a866ff6f20b6f227afe9d6bf068e1458'>root</a>/<a href='/guix/log/gnu?id=fae98f52a866ff6f20b6f227afe9d6bf068e1458'>gnu</a>/<a href='/guix/log/gnu/packages?id=fae98f52a866ff6f20b6f227afe9d6bf068e1458'>packages</a>/<a href='/guix/log/gnu/packages/vnc.scm?id=fae98f52a866ff6f20b6f227afe9d6bf068e1458'>vnc.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/vnc.scm?id=fae98f52a866ff6f20b6f227afe9d6bf068e1458&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-01-01 12:44:33 +0300'>2021-01-01</span></td><td><a href='/guix/commit/gnu/packages/vnc.scm?id=0d85401db5b7132a86a71405fbab8c5cac3bdead'>gnu: tigervnc-client: Update to 1.11.0.</a><span class='msg-avail'>...</span></td><td>Vincent Legoll</td></tr>
<tr><td><span title='2021-01-01 12:04:46 +0300'>2021-01-01</span></td><td><a href='/guix/commit/gnu/packages/vnc.scm?id=153151a865cfae5e7f8c8d98be78b238a6cc7a33'>Revert "gnu: tigervnc-client: Update to 1.11.0."</a><span class='msg-avail'>...</span></td><td>Oleg Pykhalov</td></tr>
<tr><td><span title='2020-12-30 03:01:55 -0500'>2020-12-30</span></td><td><a href='/guix/commit/gnu/packages/vnc.scm?id=776c700aafb380ffc72f10cc463c6dfeb35dd7c1'>gnu: tigervnc-client: Update to 1.11.0.</a><span class='msg-avail'>...</span></td><td>Vincent Legoll</td></tr>
<tr><td><span title='2020-07-21 23:54:44 +0200'>2020-07-21</span></td><td><a href='/guix/commit/gnu/packages/vnc.scm?id=2195ad6bd7df591c1f24b5717203b363bc3e1bfd'>gnu: libvnc: Update to 0.9.13.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-07-12 23:08:15 +0200'>2020-07-12</span></td><td><a href='/guix/commit/gnu/packages/vnc.scm?id=b0e7b6992f3f845e83cfbca4d700b51dba50b4d5'>gnu: Remove ".git" from "https://github/…/….git".</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>