Fixes a fatal constness error with g++ 4.8.2.
--- aegis-4.24/common/ac/string/memmem.cc	2008-03-14 07:19:27.000000000 +0100
+++ aegis-4.24/common/ac/string/memmem.cc	2014-01-26 11:17:58.000000000 +0100
@@ -182,7 +182,7 @@
 
     // Use optimizations in memchr when possible.
     if (needle_len == 1)
-        return memchr(haystack, *needle, haystack_len);
+        return (void *) memchr(haystack, *needle, haystack_len);
 
     // Minimizing the worst-case complexity:
     // Let n = haystack_len, m = needle_len.
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<tr><td><span title='2022-01-01 15:11:51 +0100'>2022-01-01</span></td><td><a href='/guix/commit/gnu/packages/ragel.scm?id=aac3a33d1e139743e86c66297a8d11d9fb35a7bd'>gnu: ragel: Fix build of knot on aarch64-linux.</a><span class='msg-avail'>...<span class='msg-tooltip'>Apply a patch backported from Ragel's "ragel-6" branch that allows it to
reliably generate usable code on aarch64-linux where the C/C++ "char" type is
unsigned by default, fixing the build of Knot on this platform.

* gnu/packages/patches/ragel-char-signedness.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/ragel.scm (ragel)[arguments]: Add custom phase for AArch64 that
applies the patch.
[native-inputs]: Add "patch" and patch file on AArch64.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Simon South</td></tr>