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

packages/file.scm?id=43e06d0203a4ba2e2612cb7313adb3f16f288325'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/file.scm'>
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<div class='path'>path: <a href='/guix/log/?id=43e06d0203a4ba2e2612cb7313adb3f16f288325'>root</a>/<a href='/guix/log/gnu?id=43e06d0203a4ba2e2612cb7313adb3f16f288325'>gnu</a>/<a href='/guix/log/gnu/packages?id=43e06d0203a4ba2e2612cb7313adb3f16f288325'>packages</a>/<a href='/guix/log/gnu/packages/file.scm?id=43e06d0203a4ba2e2612cb7313adb3f16f288325'>file.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/file.scm?id=43e06d0203a4ba2e2612cb7313adb3f16f288325&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-01-31 10:15:57 +0200'>2023-01-31</span></td><td><a href='/guix/commit/gnu/packages/file.scm?id=70b7d19ecf35ec27b169ea1ccc772d4a9ff7df93'>gnu: file: Update to 5.44.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/file.scm (file): Update to 5.44.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-11-14 18:44:07 +0200'>2022-11-14</span></td><td><a href='/guix/commit/gnu/packages/file.scm?id=f1316ff7bf6d5d69ba7295435803a9e320b62813'>gnu: file: Update to 5.43.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/file.scm (file): Update to 5.43.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-06-14 20:58:20 +0300'>2022-06-14</span></td><td><a href='/guix/commit/gnu/packages/file.scm?id=04c716afa56de3b8ff2b4e98673ddd4544720914'>gnu: file: Update to 5.42.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/file.scm (file): Update to 5.42.
[source]: Update source URI.
[properties]: Remove field.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-01-27 17:01:20 +0200'>2022-01-27</span></td><td><a href='/guix/commit/gnu/packages/file.scm?id=6ac6a7e0202e536b42756413d464f98e0c02f5c1'>gnu: file: Update to 5.41.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/file.scm (file): Absorb file-next.
* gnu/packages/commencement.scm (file-boot0)[arguments]: Add make-flag
to set CFLAGS.
* gnu/packages/diffoscope.scm (diffoscope): Remove file-next.
* gnu/packages/python-xyz.scm (python-magic)[inputs]: Replace file-next
with file.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2021-12-16 22:21:13 +0100'>2021-12-16</span></td><td><a href='/guix/commit/gnu/packages/file.scm?id=12c75628b4322853943ae0d0a833e371c02b97f4'>gnu: file: Add 5.41.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/file.scm (file-next): New variable.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-10-12 17:46:23 +0000'>2021-10-12</span></td><td><a href='/guix/commit/gnu/packages/file.scm?id=a1eca979fb8da842e73c42f4f53be29b169810f2'>Merge remote-tracking branch 'origin/master' into core-updates-frozen.</a></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2021-09-25 09:34:29 +0200'>2021-09-25</span></td><td><a href='/guix/commit/gnu/packages/file.scm?id=a5b2474037d749f42a816c60f0393941ba97444e'>gnu: Consolidate duplicate copyright names.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/android.scm: Consolidate copyright lines with the same email address.
* gnu/packages/code.scm: Likewise.
* gnu/packages/cpp.scm: Likewise.
* gnu/packages/databases.scm: Likewise.
* gnu/packages/emacs-xyz.scm: Likewise.
* gnu/packages/file.scm: Likewise.
* gnu/packages/freedesktop.scm: Likewise.
* gnu/packages/gl.scm: Likewise.
* gnu/packages/gps.scm: Likewise.
* gnu/packages/linux.scm: Likewise.
* gnu/packages/networking.scm: Likewise.
* gnu/packages/python-xyz.scm: Likewise.
* gnu/packages/python.scm: Likewise.
* gnu/packages/video.scm: Likewise.
* gnu/packages/xdisorg.scm: Likewise.
* gnu/services/web.scm: Likewise.

Signed-off-by: Liliana Marie Prikler &lt;liliana.prikler@gmail.com&gt;
</span></span></td><td>Greg Hogan</td></tr>