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-*)
ts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78'>refs</a><a class='active' href='/guix/log/gnu/packages/security-token.scm'>log</a><a href='/guix/tree/gnu/packages/security-token.scm?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78'>tree</a><a href='/guix/commit/gnu/packages/security-token.scm?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78'>commit</a><a href='/guix/diff/gnu/packages/security-token.scm?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/security-token.scm'>
<input type='hidden' name='id' value='bb118f20fe6581a4acbd3799ed31ab0d21e72e78'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78'>root</a>/<a href='/guix/log/gnu?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78'>gnu</a>/<a href='/guix/log/gnu/packages?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78'>packages</a>/<a href='/guix/log/gnu/packages/security-token.scm?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78'>security-token.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/security-token.scm?id=bb118f20fe6581a4acbd3799ed31ab0d21e72e78&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-05-18 22:23:48 +0200'>2021-05-18</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=57e004053769cfed2aa5d679629cc5528a5bd4f2'>gnu: yubikey-personalization: Fix build with GCC 10.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/security-token.scm (yubikey-personalization)[source](modules,
snippet): New fields.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-05-18 22:23:48 +0200'>2021-05-18</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=97ae2ed24ba08bb706c41a7190d47896cbed4160'>gnu: yubikey-personalization: Update to 1.20.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/security-token.scm (yubikey-personalization): Update to 1.20.0.
</span></span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2021-03-23 21:33:20 -0400'>2021-03-23</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=b5bae212d64480641231dff35099f798a861888f'>gnu: python2-fido2: Remove package.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/security-token.scm (python2-fido2): Delete.

Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>zimoun</td></tr>
<tr><td><span title='2021-03-23 21:33:20 -0400'>2021-03-23</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=9541682c799973c136bd93bc88eb7724a772eafe'>gnu: python2-yubikey-manager: Remove package.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/security-token.scm (python2-yubikey-manager): Delete.

Signed-off-by: Maxim Cournoyer &lt;maxim.cournoyer@gmail.com&gt;
</span></span></td><td>zimoun</td></tr>
<tr><td><span title='2021-03-13 01:00:30 +0100'>2021-03-13</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=deb8853243e115112baff5325b4b137c1d0890b4'>gnu: eid-mw: Update to 5.0.14.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/security-token.scm (eid-mw): Update to 5.0.14.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-02-07 23:27:18 +0100'>2021-02-07</span></td><td><a href='/guix/commit/gnu/packages/security-token.scm?id=95df6dc61a10d2cded806f570c392a20b29fe25a'>gnu: ccid: Update to 1.4.34.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/security-token.scm (ccid): Update to 1.4.34.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>