Copied from Debian.

From: Rodeo
Origin: https://github.com/HandBrake/HandBrake/blob/master/contrib/a52dec/A04-modern-gcc-cflags.patch

--- a52dec-0.7.4/configure.in.orig
+++ a52dec-0.7.4/configure.in
@@ -34,11 +34,11 @@
     case "$host" in
     i?86-* | k?-*)
 	case "$host" in
-	i386-*) OPT_CFLAGS="$CFLAGS -mcpu=i386";;
-	i486-*) OPT_CFLAGS="$CFLAGS -mcpu=i486";;
-	i586-*) OPT_CFLAGS="$CFLAGS -mcpu=pentium";;
-	i686-*) OPT_CFLAGS="$CFLAGS -mcpu=pentiumpro";;
-	k6-*)   OPT_CFLAGS="$CFLAGS -mcpu=k6";;
+	i386-*) OPT_CFLAGS="$CFLAGS -mtune=i386";;
+	i486-*) OPT_CFLAGS="$CFLAGS -mtune=i486";;
+	i586-*) OPT_CFLAGS="$CFLAGS -mtune=pentium";;
+	i686-*) OPT_CFLAGS="$CFLAGS -mtune=pentiumpro";;
+	k6-*)   OPT_CFLAGS="$CFLAGS -mtune=k6";;
 	esac
 	AC_TRY_CFLAGS([$OPT_CFLAGS],[CFLAGS=$OPT_CFLAGS]);;
     sparc-* | sparc64-*)
</option>
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<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
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<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06'>refs</a><a class='active' href='/guix/log/gnu/services/spice.scm'>log</a><a href='/guix/tree/gnu/services/spice.scm?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06'>tree</a><a href='/guix/commit/gnu/services/spice.scm?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06'>commit</a><a href='/guix/diff/gnu/services/spice.scm?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/services/spice.scm'>
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<div class='path'>path: <a href='/guix/log/?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06'>root</a>/<a href='/guix/log/gnu?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06'>gnu</a>/<a href='/guix/log/gnu/services?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06'>services</a>/<a href='/guix/log/gnu/services/spice.scm?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06'>spice.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/services/spice.scm?id=1bd9f785b616612fd71f8b8941a0c17d18bdfa06&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-04-21 00:06:40 +0200'>2020-04-21</span></td><td><a href='/guix/commit/gnu/services/spice.scm?id=7d903d2ff7e17406c0650541f35e37a99dab8759'>services: Don't use the deprecated 'make-forkexec-constructor' call.</a><span class='msg-avail'>...<span class='msg-tooltip'>Passing 'make-forkexec-constructor' a string or several string arguments
has been deprecated since dmd 0.1.

* gnu/services/base.scm (rngd-service-type): In 'start' method, pass a
list as the first argument to 'make-forkexec-constructor'.
* gnu/services/desktop.scm (bluetooth-shepherd-service): Likewise.
* gnu/services/spice.scm (spice-vdagent-shepherd-service): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-01-26 18:45:09 +0100'>2020-01-26</span></td><td><a href='/guix/commit/gnu/services/spice.scm?id=9a5edd02405b9ee70bc2f93b91483e8da2eadfd3'>services: Fix typo in spice-vdagent-service.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/services/spice.scm (spice-vdagent-service): Fix typo.

Signed-off-by: Danny Milosavljevic &lt;dannym@scratchpost.org&gt;
</span></span></td><td>Damien Cassou</td></tr>