Minimally patch libtheora's ancient config.guess to support mips64.

--- libtheora/config.guess.orig	2009-02-23 22:50:50.000000000 -0500
+++ libtheora/config.guess	2013-10-31 23:49:48.155999944 -0400
@@ -798,25 +798,24 @@
     m68*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit 0 ;;
-    mips:Linux:*:*)
+    mips:Linux:*:* | mips64:Linux:*:*)
 	eval $set_cc_for_build
 	sed 's/^	//' << EOF >$dummy.c
 	#undef CPU
-	#undef mips
-	#undef mipsel
+	#undef ${UNAME_MACHINE}
+	#undef ${UNAME_MACHINE}el
 	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	CPU=mipsel
+	CPU=${UNAME_MACHINE}el
 	#else
 	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	CPU=mips
+	CPU=${UNAME_MACHINE}
 	#else
 	CPU=
 	#endif
 	#endif
 EOF
-	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep ^CPU=`
-	rm -f $dummy.c && rmdir $tmpdir
-	test x"${CPU}" != x && echo "${CPU}-pc-linux-gnu" && exit 0
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit 0; }
 	;;
     ppc:Linux:*:*)
 	echo powerpc-unknown-linux-gnu
e7bd8147'>refs</a><a class='active' href='/guix/log/tests/boot-parameters.scm'>log</a><a href='/guix/tree/tests/boot-parameters.scm?id=d2f1b1d08b313b56a781a6809271ee22e7bd8147'>tree</a><a href='/guix/commit/tests/boot-parameters.scm?id=d2f1b1d08b313b56a781a6809271ee22e7bd8147'>commit</a><a href='/guix/diff/tests/boot-parameters.scm?id=d2f1b1d08b313b56a781a6809271ee22e7bd8147'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/boot-parameters.scm'>
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<div class='path'>path: <a href='/guix/log/?id=d2f1b1d08b313b56a781a6809271ee22e7bd8147'>root</a>/<a href='/guix/log/tests?id=d2f1b1d08b313b56a781a6809271ee22e7bd8147'>tests</a>/<a href='/guix/log/tests/boot-parameters.scm?id=d2f1b1d08b313b56a781a6809271ee22e7bd8147'>boot-parameters.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/tests/boot-parameters.scm?id=d2f1b1d08b313b56a781a6809271ee22e7bd8147&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-08-28 23:37:28 +0200'>2022-08-28</span></td><td><a href='/guix/commit/tests/boot-parameters.scm?id=3294fa2ba451c7d5ef42a5d9fac780877f364bc7'>tests: Add test for menu-entry roundtrips as sexps.</a><span class='msg-avail'>...<span class='msg-tooltip'>* tests/boot-parameters.scm (%uuid-menu-entry,
%file-system-label-menu-entry): New variables.
("menu-entry roundtrip, uuid", "menu-entry roundtrip,
file-system-label"): New tests.

Signed-off-by: Marius Bakke &lt;marius@gnu.org&gt;
</span></span></td><td>Josselin Poiret</td></tr>
<tr><td><span title='2022-03-16 15:48:52 +0100'>2022-03-16</span></td><td><a href='/guix/commit/tests/boot-parameters.scm?id=47960b55268220ca1cb7d2fed41c53873181d816'>system: Improve 'read-boot-parameters' incompatibility diagnostic.</a><span class='msg-avail'>...<span class='msg-tooltip'>Previously, when reading an incompatible "parameters" file, 'guix
system' would print a warning and then crash with a wrong-type-arg
backtrace because code expects 'read-boot-parameters' to always return a
&lt;boot-parameters&gt; record.

* gnu/system.scm (read-boot-parameters): Upon incompatibility, raise an
error instead of returning #f.  Also raise a '&amp;fix-hint' condition.
* tests/boot-parameters.scm ("read, construction, mandatory fields"):
Define 'test-read-boot-parameters' as a macro; expect
'formatted-message?' exceptions rather than #f returns.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-03-01 10:30:17 -0500'>2022-03-01</span></td><td><a href='/guix/commit/tests/boot-parameters.scm?id=4a3b8f4d5981de444b3590fca8dfa1facb768933'>system: Add a version field to the &lt;boot-parameters&gt; record.</a><span class='msg-avail'>...<span class='msg-tooltip'>This version field exposes the (already present) version information of a boot
parameters file.

* gnu/system.scm (%boot-parameters-version): New variable.
(&lt;boot-parameters&gt;)[version]: New field.
(read-boot-parameters): Use it.
(operating-system-boot-parameters-file): Likewise.
* tests/boot-parameters.scm (test-read-boot-parameters): Use
%boot-parameters-version as the default version value in the template.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-08-29 01:05:26 -0400'>2021-08-29</span></td><td><a href='/guix/commit/tests/boot-parameters.scm?id=da4e40948326387d5bcda58783914d5f9ce8b095'>Migrate to the new 'targets' field of bootloader-configuration.</a><span class='msg-avail'>...<span class='msg-tooltip'>The old 'target' field is deprecated; adjust the sources to use the new
'targets' one instead.

* doc/guix-cookbook.texi&lt;target&gt;: Replace by 'targets'.
* gnu/bootloader/grub.scm: Likewise.
* gnu/installer/parted.scm: Likewise.
* gnu/machine/digital-ocean.scm: Likewise.
* gnu/system/examples/asus-c201.tmpl: Likewise
* gnu/system/examples/bare-bones.tmpl: Likewise
* gnu/system/examples/bare-hurd.tmpl: Likewise
* gnu/system/examples/beaglebone-black.tmpl: Likewise
* gnu/system/examples/desktop.tmpl: Likewise
* gnu/system/examples/docker-image.tmpl: Likewise
* gnu/system/examples/lightweight-desktop.tmpl: Likewise
* gnu/system/examples/vm-image.tmpl: Likewise
* gnu/system/examples/yggdrasil.tmpl: Likewise
* gnu/system/hurd.scm: Likewise
* gnu/system/images/hurd.scm: Likewise
* gnu/system/images/novena.scm: Likewise
* gnu/system/images/pine64.scm: Likewise
* gnu/system/images/pinebook-pro.scm: Likewise
* gnu/system/images/rock64.scm: Likewise
* gnu/system/install.scm: Likewise
* gnu/system/vm.scm: Likewise
* gnu/tests.scm: Likewise
* gnu/tests/ganeti.scm: Likewise
* gnu/tests/install.scm: Likewise
* gnu/tests/nfs.scm: Likewise
* gnu/tests/telephony.scm: Likewise
* tests/boot-parameters.scm: Likewise
* tests/system.scm: Likewise
</span></span></td><td>Maxim Cournoyer</td></tr>