Document when SQLite3 functions got introduced

Author: petk

cmake/ext/pdo_sqlite/cmake/config.h.in

@@ -1,7 +1,8 @@
 /* Define to 1 if the PHP extension 'pdo_sqlite' is available. */
 #cmakedefine HAVE_PDO_SQLITELIB 1
 
-/* Define to 1 if SQLite library has the 'sqlite3_close_v2' function. */
+/* Define to 1 if SQLite library has the 'sqlite3_close_v2' function. Available
+   since SQLite 3.7.14. */
 #cmakedefine HAVE_SQLITE3_CLOSE_V2 1
 
 /* Define to 1 if SQLite library was compiled with the

cmake/ext/sqlite3/cmake/config.h.in

@@ -1,10 +1,12 @@
 /* Define to 1 if the PHP extension 'sqlite3' is available. */
 #cmakedefine HAVE_SQLITE3 1
 
-/* Define to 1 if SQLite library has the 'sqlite3_errstr' function. */
+/* Define to 1 if SQLite library has the 'sqlite3_errstr' function. Available
+   since SQLite 3.7.15. */
 #cmakedefine HAVE_SQLITE3_ERRSTR 1
 
-/* Define to 1 if SQLite library has the 'sqlite3_expanded_sql' function. */
+/* Define to 1 if SQLite library has the 'sqlite3_expanded_sql' function.
+   Available since SQLite 3.14.0. */
 #cmakedefine HAVE_SQLITE3_EXPANDED_SQL 1
 
 /* Define to 1 if SQLite library was compiled with the