Index: ext/misc/prefixes.c
==================================================================
--- ext/misc/prefixes.c
+++ ext/misc/prefixes.c
@@ -17,10 +17,11 @@
 ** The function has a single (non-HIDDEN) column named prefix that takes
 ** on all prefixes of the string in its argument, including an empty string
 ** and the input string itself.  The order of prefixes is from longest
 ** to shortest.
 */
+#if !defined(SQLITE_CORE) || !defined(SQLITE_OMIT_VIRTUALTABLE)
 #if !defined(SQLITEINT_H)
 #include "sqlite3ext.h"
 #endif
 SQLITE_EXTENSION_INIT1
 #include <string.h>
@@ -313,5 +314,6 @@
         db, "prefix_length", 2, SQLITE_UTF8, 0, prefixLengthFunc, 0, 0
     );
   }
   return rc;
 }
+#endif /* !defined(SQLITE_CORE) || !defined(SQLITE_OMIT_VIRTUALTABLE) */

Index: src/test1.c
==================================================================
--- src/test1.c
+++ src/test1.c
@@ -7139,11 +7139,13 @@
   extern int sqlite3_fileio_init(sqlite3*,char**,const sqlite3_api_routines*);
   extern int sqlite3_fuzzer_init(sqlite3*,char**,const sqlite3_api_routines*);
   extern int sqlite3_ieee_init(sqlite3*,char**,const sqlite3_api_routines*);
   extern int sqlite3_nextchar_init(sqlite3*,char**,const sqlite3_api_routines*);
   extern int sqlite3_percentile_init(sqlite3*,char**,const sqlite3_api_routines*);
+#ifndef SQLITE_OMIT_VIRTUALTABLE
   extern int sqlite3_prefixes_init(sqlite3*,char**,const sqlite3_api_routines*);
+#endif
   extern int sqlite3_regexp_init(sqlite3*,char**,const sqlite3_api_routines*);
   extern int sqlite3_remember_init(sqlite3*,char**,const sqlite3_api_routines*);
   extern int sqlite3_series_init(sqlite3*,char**,const sqlite3_api_routines*);
   extern int sqlite3_spellfix_init(sqlite3*,char**,const sqlite3_api_routines*);
   extern int sqlite3_totype_init(sqlite3*,char**,const sqlite3_api_routines*);
@@ -7165,11 +7167,13 @@
     { "fileio",                sqlite3_fileio_init               },
     { "fuzzer",                sqlite3_fuzzer_init               },
     { "ieee754",               sqlite3_ieee_init                 },
     { "nextchar",              sqlite3_nextchar_init             },
     { "percentile",            sqlite3_percentile_init           },
+#ifndef SQLITE_OMIT_VIRTUALTABLE
     { "prefixes",              sqlite3_prefixes_init             },
+#endif
     { "regexp",                sqlite3_regexp_init               },
     { "remember",              sqlite3_remember_init             },
     { "series",                sqlite3_series_init               },
     { "spellfix",              sqlite3_spellfix_init             },
     { "totype",                sqlite3_totype_init               },