Taken from Debian, necessary for compilation on mips.

Patch to fix integer types problem by Goswin von Brederlow
<brederlo@informatik.uni-tuebingen.de> (#258444)
--- chmlib-0.39.orig/src/chm_lib.c
+++ chmlib-0.39/src/chm_lib.c
@@ -56,6 +56,7 @@
 
 #include "lzx.h"
 
+#include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 #ifdef CHM_DEBUG
@@ -149,22 +150,9 @@
 typedef __int64                 Int64;
 typedef unsigned __int64        UInt64;
 
-/* I386, 32-bit, non-Windows */
-/* Sparc        */
-/* MIPS         */
-/* PPC          */
-#elif __i386__ || __sun || __sgi || __ppc__
-typedef unsigned char           UChar;
-typedef short                   Int16;
-typedef unsigned short          UInt16;
-typedef long                    Int32;
-typedef unsigned long           UInt32;
-typedef long long               Int64;
-typedef unsigned long long      UInt64;
-
 /* x86-64 */
 /* Note that these may be appropriate for other 64-bit machines. */
-#elif __x86_64__ || __ia64__
+#elif defined(__LP64__)
 typedef unsigned char           UChar;
 typedef short                   Int16;
 typedef unsigned short          UInt16;
@@ -173,10 +161,18 @@
 typedef long                    Int64;
 typedef unsigned long           UInt64;
 
+/* I386, 32-bit, non-Windows */
+/* Sparc        */
+/* MIPS         */
+/* PPC          */
 #else
-
-/* yielding an error is preferable to yielding incorrect behavior */
-#error "Please define the sized types for your platform in chm_lib.c"
+typedef unsigned char           UChar;
+typedef short                   Int16;
+typedef unsigned short          UInt16;
+typedef long                    Int32;
+typedef unsigned long           UInt32;
+typedef long long               Int64;
+typedef unsigned long long      UInt64;
 #endif
 
 /* GCC */
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<tr><td><span title='2024-03-10 23:44:33 +0000'>2024-03-10</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=5cf8904acf3215831933c7a614343d29ac8cd6dd'>gnu: Remove python-rdflib-jsonld.</a></td><td>Arun Isaac</td></tr>
<tr><td><span title='2024-03-10 23:44:30 +0000'>2024-03-10</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=4e046516a10580df4b0bf524cd3b8ee23f2862af'>gnu: Remove python-rdflib-5.</a></td><td>Arun Isaac</td></tr>
<tr><td><span title='2024-01-16 12:44:38 +0100'>2024-01-16</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=73221c441f2021abd657d7dba9c07187bd9dcf3a'>gnu: python-pyrdfa3: Update to 3.6.2.</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2024-01-11 23:20:28 +0100'>2024-01-11</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=37fbc0a274284d6bd59b261584706058138a068e'>gnu: sord: Update to 0.16.16.</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2024-01-11 23:20:28 +0100'>2024-01-11</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=813f344cff9ebf39109a046e6cead4831281a654'>gnu: sord: Enable tests.</a></td><td>Brendan Tildesley</td></tr>
<tr><td><span title='2024-01-11 23:20:28 +0100'>2024-01-11</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=02ae792775a5b0744659d226800421736efaf430'>gnu: serd: Update to 0.32.0.</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2024-01-11 23:20:27 +0100'>2024-01-11</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=4fe70e39eab1bce2b2b022081edce6adaabe3738'>gnu: serd: Enable tests.</a></td><td>Brendan Tildesley</td></tr>
<tr><td><span title='2023-05-19 13:12:28 +0200'>2023-05-19</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=45a82f08f47dc46acf007b1e7292c48263f2d93a'>gnu: sord: Update to 0.16.14.</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2023-05-19 13:12:28 +0200'>2023-05-19</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=ee10850d14ba69810bf9b88babbaec6256ddaaa8'>gnu: serd: Update to 0.30.16.</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2023-02-19 01:00:01 +0100'>2023-02-19</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=1e6ddceb8318d413745ca1c9d91fde01b1e0364b'>gnu: Use HTTPS package home pages wherever possible.</a></td><td>Tobias Geerinckx-Rice</td></tr>