use sqlite3.h from trunk when building with sqlite_trunk and report sqlite3 version

When building with tag `sqlite3_trunk`, we now use `sqlite3_trunk.h` instead of the `sqlite3.h` from
the released version.

We now also report the SQLite version and version number via `SQLiteVersion()` and `SQLiteVersionNumber()`.

Updates tailscale/corp#37997

Signed-off-by: Percy Wegmann <percy@tailscale.com>

Author: oxtoacart

cgosqlite/cgosqlite.go

@@ -531,3 +531,13 @@ func APIArmorEnabled() bool {
 func TimestampVFSEnabled() bool {
 	return C.tmstmpvfs_enabled == 1
 }
+
+// SQLiteVersion reports SQLITE_VERSION.
+func SQLiteVersion() string {
+	return C.GoString(C.sqlite3_libversion())
+}
+
+// SQLiteVersionNumber reports SQLITE_VERSION_NUMBER.
+func SQLiteVersionNumber() int {
+	return int(C.sqlite3_libversion_number())
+}

cgosqlite/cgosqlite.h

@@ -1,5 +1,9 @@
 #include <math.h> // math.h is required on linux for FTS5.
+#ifdef SQLITE_TRUNK
+#include "sqlite3_trunk.h"
+#else
 #include "sqlite3.h"
+#endif
 #include <stdlib.h>
 #include <stdint.h>
 #include <string.h>

cgosqlite/release_test.go

@@ -0,0 +1,21 @@
+//go:build !sqlite_trunk
+
+package cgosqlite
+
+import "testing"
+
+func TestSQLiteVersion(t *testing.T) {
+	const want = "3.51.2"
+	got := SQLiteVersion()
+	if got != want {
+		t.Fatalf("wrong version, want %s, got %s", want, got)
+	}
+}
+
+func TestSQLiteVersionNumber(t *testing.T) {
+	const want = 3051002
+	got := SQLiteVersionNumber()
+	if got != want {
+		t.Fatalf("wrong version, want %d, got %d", want, got)
+	}
+}

cgosqlite/sqlite3_trunk.c

@@ -141394,7 +141394,7 @@ SQLITE_API int sqlite3_exec(
 */
 #ifndef SQLITE3EXT_H
 #define SQLITE3EXT_H
-/* #include "sqlite3.h" */
+/* #include "sqlite3_trunk.h" */
 
 /*
 ** The following structure holds pointers to all of the SQLite API
@@ -186161,7 +186161,7 @@ SQLITE_API int sqlite3_complete16(const void *zSql){
 ** This header file is used by programs that want to link against the
 ** FTS3 library.  All it does is declare the sqlite3Fts3Init() interface.
 */
-/* #include "sqlite3.h" */
+/* #include "sqlite3_trunk.h" */
 
 #if 0
 extern "C" {
@@ -186194,7 +186194,7 @@ SQLITE_PRIVATE int sqlite3Fts3Init(sqlite3 *db);
 ** This header file is used by programs that want to link against the
 ** RTREE library.  All it does is declare the sqlite3RtreeInit() interface.
 */
-/* #include "sqlite3.h" */
+/* #include "sqlite3_trunk.h" */
 
 #ifdef SQLITE_OMIT_VIRTUALTABLE
 # undef SQLITE_ENABLE_RTREE
@@ -186231,7 +186231,7 @@ SQLITE_PRIVATE int sqlite3RtreeInit(sqlite3 *db);
 ** This header file is used by programs that want to link against the
 ** ICU extension.  All it does is declare the sqlite3IcuInit() interface.
 */
-/* #include "sqlite3.h" */
+/* #include "sqlite3_trunk.h" */
 
 #if 0
 extern "C" {
@@ -192094,7 +192094,7 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){
 SQLITE_EXTENSION_INIT3
 #endif
 
-/* #include "sqlite3.h" */
+/* #include "sqlite3_trunk.h" */
 /************** Include fts3_tokenizer.h in the middle of fts3Int.h **********/
 /************** Begin file fts3_tokenizer.h **********************************/
 /*
@@ -192123,7 +192123,7 @@ SQLITE_EXTENSION_INIT3
 ** If tokenizers are to be allowed to call sqlite3_*() functions, then
 ** we will need a way to register the API consistently.
 */
-/* #include "sqlite3.h" */
+/* #include "sqlite3_trunk.h" */
 
 /*
 ** Structures used by the tokenizer interface. When a new tokenizer
@@ -217202,7 +217202,7 @@ SQLITE_PRIVATE Module *sqlite3JsonVtabRegister(sqlite3 *db, const char *zName){
 /*   #include "sqlite3ext.h" */
   SQLITE_EXTENSION_INIT1
 #else
-/*   #include "sqlite3.h" */
+/*   #include "sqlite3_trunk.h" */
 #endif
 SQLITE_PRIVATE sqlite3_int64 sqlite3GetToken(const unsigned char*,int*); /* In SQLite core */
 
@@ -223517,7 +223517,7 @@ SQLITE_API int sqlite3_rtree_init(
 /*   #include "sqlite3ext.h" */
   SQLITE_EXTENSION_INIT1
 #else
-/*   #include "sqlite3.h" */
+/*   #include "sqlite3_trunk.h" */
 #endif
 
 /*
@@ -224413,7 +224413,7 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule(
 /* #include <string.h> */
 /* #include <stdio.h> */
 
-/* #include "sqlite3.h" */
+/* #include "sqlite3_trunk.h" */
 
 #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_RBU)
 /************** Include sqlite3rbu.h in the middle of sqlite3rbu.c ***********/
@@ -224687,7 +224687,7 @@ SQLITE_PRIVATE void sqlite3Fts3IcuTokenizerModule(
 #ifndef _SQLITE3RBU_H
 #define _SQLITE3RBU_H
 
-/* #include "sqlite3.h"              ** Required for error code definitions ** */
+/* #include "sqlite3_trunk.h"              ** Required for error code definitions ** */
 
 #if 0
 extern "C" {
@@ -239242,7 +239242,7 @@ SQLITE_API int sqlite3session_config(int op, void *pArg){
 #ifndef _FTS5_H
 #define _FTS5_H
 
-/* #include "sqlite3.h" */
+/* #include "sqlite3_trunk.h" */
 
 #if 0
 extern "C" {