This patch comes from upstream:
https://gitlab.freedesktop.org/farstream/farstream/-/merge_requests/4

From 54987d445ea714b467d901b7daf8c09ed0644189 Mon Sep 17 00:00:00 2001
From: Debarshi Ray <debarshir@freedesktop.org>
Date: Thu, 12 Mar 2020 14:07:23 +0100
Subject: [PATCH] build: Adapt to backwards incompatible change in GNU Make 4.3

GNU Make 4.3 has a backwards incompatible change affecting the use of
number signs or hashes (ie., #) inside function invocations. See:
https://lists.gnu.org/archive/html/info-gnu/2020-01/msg00004.html

In this case, it would expand the '\#' in the '\n\#include \"$(h)\"'
argument to the foreach call to '\#', not '#'. This would lead to
spurious backslashes in front of the '#include' directives in the
generated fs-enumtypes.c file.

Spotted by Ernestas Kulik.
---
 common-modified/gst-glib-gen.mak | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/common-modified/gst-glib-gen.mak b/common-modified/gst-glib-gen.mak
index 14f1ba37..2247a41c 100644
--- a/common-modified/gst-glib-gen.mak
+++ b/common-modified/gst-glib-gen.mak
@@ -6,7 +6,8 @@
 #glib_gen_prefix=gst_color_balance
 #glib_gen_basename=colorbalance
 
-enum_headers=$(foreach h,$(glib_enum_headers),\n\#include \"$(h)\")
+hash:=\#
+enum_headers=$(foreach h,$(glib_enum_headers),\n$(hash)include \"$(h)\")
 
 # these are all the rules generating the relevant files
 $(glib_gen_basename)-enumtypes.h: $(glib_enum_headers)
-- 
GitLab

?id=bc5904e8b85d4d994861ecd55b038ad42305e77d'>commit</a><a href='/guix/diff/gnu/home/services/symlink-manager.scm?id=bc5904e8b85d4d994861ecd55b038ad42305e77d'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/home/services/symlink-manager.scm'>
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<div class='path'>path: <a href='/guix/log/?id=bc5904e8b85d4d994861ecd55b038ad42305e77d'>root</a>/<a href='/guix/log/gnu?id=bc5904e8b85d4d994861ecd55b038ad42305e77d'>gnu</a>/<a href='/guix/log/gnu/home?id=bc5904e8b85d4d994861ecd55b038ad42305e77d'>home</a>/<a href='/guix/log/gnu/home/services?id=bc5904e8b85d4d994861ecd55b038ad42305e77d'>services</a>/<a href='/guix/log/gnu/home/services/symlink-manager.scm?id=bc5904e8b85d4d994861ecd55b038ad42305e77d'>symlink-manager.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/home/services/symlink-manager.scm?id=bc5904e8b85d4d994861ecd55b038ad42305e77d&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-01-03 19:32:07 +0100'>2022-01-03</span></td><td><a href='/guix/commit/gnu/home/services/symlink-manager.scm?id=cde3376b35222f46f8a82e7668a1a6fd42c08754'>home: services: Make strings in Gexps translateble.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/home/services.scm (%initialize-gettext): New variable.
(compute-on-first-login-script): Use it.
(compute-on-change-gexp): Likewise.
* gnu/home/services/symlink-manager.scm (update-symlinks-script): Likewise.
* po/guix/POTFILES.in: Add gnu/home-services.scm and
gnu/home/services/symlink-manager.scm.

Suggested-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
Link: &lt;https://yhetil.org/guix-bugs/87sfvy8k1u.fsf@gnu.org&gt;
Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Xinglu Chen</td></tr>
<tr><td><span title='2021-10-09 19:24:18 +0300'>2021-10-09</span></td><td><a href='/guix/commit/gnu/home/services/symlink-manager.scm?id=0e8d2df0f1a4ab25c482e1c427c54e19903e62f3'>Move (gnu home-services) to (gnu home services).</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/home-services.scm (%guix-home-root-directory): Replace
gnu/home-services.scm with "gnu/home/services.scm".
Rename to gnu/home/services.scm.
* gnu/local.mk
(GNU_SYSTEM_MODULES): Rename gnu/home-services.scm to gnu/home/services.scm.
* doc/he-config-bare-bones.scm:
Replace (gnu home-services) with (gnu home services).
* gnu/home.scm: Same.
* gnu/home/services/fontutils.scm: Same.
* gnu/home/services/mcron.scm: Same.
* gnu/home/services/shells.scm: Same.
* gnu/home/services/shepherd.scm: Same.
* gnu/home/services/symlink-manager.scm: Same.
* gnu/home/services/xdg.scm: Same.
* guix/scripts/home.scm: Same.
* guix/self.scm: Same.
</span></span></td><td>Oleg Pykhalov</td></tr>
<tr><td><span title='2021-10-08 15:36:18 +0300'>2021-10-08</span></td><td><a href='/guix/commit/gnu/home/services/symlink-manager.scm?id=ba8ddb348045f81f061a1c7f51c0f7c2b0024e71'>gnu: Move (gnu home-services) to (gnu home services).</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/home-services/configuration.scm: Move the content ...
* gnu/home/services/configuration.scm: ... here.
* doc/guix.texi:
Replace (gnu home-services mcron) with (gnu home services mcron).
Replace (gnu home-services) with (gnu home services).
* gnu/home.scm:
Replace (gnu home-services fontutils) with (gnu services fontutils).
Replace (gnu home-services shells) with (gnu home services shells).
Replace (gnu home-services symlink-manager) with
(gnu home services symlink-manager).
Replace (gnu home-services xdg) with (gnu home services xdg).
* gnu/home-services/fontutils.scm: Rename to gnu/services/fontutils.scm.
* gnu/home-services/mcron.scm: Move to gnu/home/services/mcron.scm.
Replace (gnu home-services shepherd) with (gnu home services shepherd).
* gnu/home-services.scm (%service-type-path):
Search home services in "gnu/services".
* gnu/home-services/shells.scm: Replace (gnu home-services configuration) with
(gnu home services configuration).
Rename to gnu/home/services/shells.scm.
Replace (gnu home-services utils) with (gnu home services utils).
* gnu/home-services/shepherd.scm: Move to gnu/home/services/shepherd.scm.
* gnu/home-services/symlink-manager.scm:
Rename to gnu/home/services/symlink-manager.scm.
* gnu/home-services/utils.scm: Rename to gnu/home/services/utils.scm.
* gnu/home-services/xdg.scm: Rename to gnu/home/services/xdg.scm.
* guix/scripts/home/import.scm:
Replace (gnu home-services bash) with (gnu home services bash).
* gnu/home-services.scm: Update documentation string.
* doc/he-config-bare-bones.scm:
Apply new (gnu home-services ...) modules location.
* gnu/local.mk (GNU_SYSTEM_MODULES): Same.
</span></span></td><td>Oleg Pykhalov</td></tr>