This patch was copied from Debian.  It is needed on armhf.

--- a/build/make/configure.sh	2013-12-17 18:18:46.904410454 +0100
+++ b/build/make/configure.sh	2013-12-17 18:19:58.720758736 +0100
@@ -799,7 +799,6 @@
 
         case ${tgt_cc} in
         gcc)
-            CROSS=${CROSS:-arm-none-linux-gnueabi-}
             link_with_cc=gcc
             setup_gnu_toolchain
             arch_int=${tgt_isa##armv}
@@ -822,10 +821,6 @@
                     check_add_cflags -mfpu=neon #-ftree-vectorize
                     check_add_asflags -mfpu=neon
                 fi
-
-                if [ -z "${tune_cpu}" ]; then
-                    tune_cpu=cortex-a8
-                fi
             else
                 check_add_cflags -march=${tgt_isa}
                 check_add_asflags -march=${tgt_isa}
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<div class='path'>path: <a href='/guix/log/?id=44636fd92d69749f1d16f11d9bfd7cf7ea616812'>root</a>/<a href='/guix/log/gnu?id=44636fd92d69749f1d16f11d9bfd7cf7ea616812'>gnu</a>/<a href='/guix/log/gnu/packages?id=44636fd92d69749f1d16f11d9bfd7cf7ea616812'>packages</a>/<a href='/guix/log/gnu/packages/telephony.scm?id=44636fd92d69749f1d16f11d9bfd7cf7ea616812'>telephony.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/telephony.scm?id=44636fd92d69749f1d16f11d9bfd7cf7ea616812&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-05-03 12:36:08 +0200'>2023-05-03</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=0cbbc1996d366ee8408898ae255085e745f3d292'>gnu: Add sipp.</a></td><td>Ivan Gankevich</td></tr>
<tr><td><span title='2023-04-28 08:56:48 +0800'>2023-04-28</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=e42117bfc9afd7650f14efd2b2def68fcbfd4e36'>gnu: mumble: Update to 1.4.287, fix build.</a></td><td>宋文武</td></tr>
<tr><td><span title='2023-04-14 17:15:08 -0400'>2023-04-14</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=3bacd3c76a58ebe70f98be654f09cbd4166093ab'>Merge branch 'master' into core-updates.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2023-03-31 13:24:48 +0200'>2023-03-31</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=651505807e7847b01bf6e53af8866958294d417c'>gnu: ucommon: Explicitly select C++ version.</a></td><td>Lars-Dominik Braun</td></tr>
<tr><td><span title='2023-03-28 20:16:06 -0400'>2023-03-28</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=846c615e15b6848c1e4c7d18146d6b40d417cf9f'>gnu: pjproject: Update to 2.13.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-12-11 01:00:23 +0100'>2022-12-11</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=da2f7868f8816d801d485d7d73206161d69aa8e9'>gnu: coturn: Update to 4.6.1.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2022-12-04 23:08:21 +0100'>2022-12-04</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=f4b4875bc06d185577188b2539985d64195f0ff1'>gnu: Add xgoldmon.</a></td><td>Denis 'GNUtoo' Carikli</td></tr>
<tr><td><span title='2022-12-04 23:08:21 +0100'>2022-12-04</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=eaef825928bc4498b32808308b05d3f5ae69d6a3'>gnu: Add libosmocore.</a></td><td>Denis 'GNUtoo' Carikli</td></tr>
<tr><td><span title='2022-10-23 15:56:19 +0200'>2022-10-23</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=d117d225d99a99984b4cce082f5f1bdd18efc003'>gnu: Add coturn.</a></td><td>Thomas Albers</td></tr>
<tr><td><span title='2022-09-23 23:56:14 -0400'>2022-09-23</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=503cfd542124d5e6983c28839953424e44b88244'>gnu: pjproject: Update to 2.12.1.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-09-10 17:23:32 +0200'>2022-09-10</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=575dbab74622ee8304827b98865a26225145e22a'>gnu: mumble: Update to 1.4.274.</a></td><td>Michael Rohleder</td></tr>
<tr><td><span title='2022-08-14 02:00:01 +0200'>2022-08-14</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=2388d2d3f7e43d73b0a8a6c1282be16bafb918a7'>gnu: rnnoise: Unhide and rename variable.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2022-07-31 21:55:48 -0400'>2022-07-31</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=eef8e2ec46c4155980815e00a394428c0c3de075'>gnu: qttools: Rename to qttools-5.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-07-31 21:55:45 -0400'>2022-07-31</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=65e5e85d284ef78bc245b3779c7fcdc733ed60a7'>gnu: qtquickcontrols: Rename to qtquickcontrols-5.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-07-31 21:55:44 -0400'>2022-07-31</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=735d340ae461751eaebf177334dec537da7cfec2'>gnu: qtdeclarative: Rename to qtdeclarative-5.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-07-31 21:55:43 -0400'>2022-07-31</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=1ef04fb2288dade3ad2883026ae286a68ef13a1e'>gnu: qtsvg: Rename variable to qtsvg-5.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2022-03-20 14:44:25 +0100'>2022-03-20</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=5e8f648842ed9cddf1fb8a240b17bb78dc1511c3'>gnu: mumble: Use correct path for libmumbleoverlay.</a></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2022-03-08 20:53:43 +0100'>2022-03-08</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=62479e9420da90851fec63bd4b48f90727a00890'>gnu: mumble: Enable tests.</a></td><td>Liliana Marie Prikler</td></tr>
<tr><td><span title='2022-03-08 20:53:43 +0100'>2022-03-08</span></td><td><a href='/guix/commit/gnu/packages/telephony.scm?id=a4cb2364927437912fac8a62bf5097dd35799447'>gnu: mumble: Update to 1.4.230.</a></td><td>Liliana Marie Prikler</td></tr>