Simplify SQLite library checks

These are with minimum required version now considered as always
available.

Author: petk

cmake/ext/pdo_sqlite/CMakeLists.txt

@@ -85,8 +85,6 @@ if(TARGET SQLite::SQLite3)
   cmake_push_check_state(RESET)
     set(CMAKE_REQUIRED_LIBRARIES SQLite::SQLite3)
 
-    check_symbol_exists(sqlite3_close_v2 sqlite3.h HAVE_SQLITE3_CLOSE_V2)
-
     check_symbol_exists(
       sqlite3_column_table_name
       sqlite3.h
@@ -102,6 +100,8 @@ if(TARGET SQLite::SQLite3)
       set(PDO_SQLITE_OMIT_LOAD_EXTENSION TRUE)
     endif()
   cmake_pop_check_state()
+
+  set(HAVE_SQLITE3_CLOSE_V2 TRUE)
 endif()
 
 ################################################################################

cmake/ext/sqlite3/CMakeLists.txt

@@ -81,9 +81,6 @@ if(TARGET SQLite::SQLite3)
   cmake_push_check_state(RESET)
     set(CMAKE_REQUIRED_LIBRARIES SQLite::SQLite3)
 
-    check_symbol_exists(sqlite3_errstr sqlite3.h HAVE_SQLITE3_ERRSTR)
-    check_symbol_exists(sqlite3_expanded_sql sqlite3.h HAVE_SQLITE3_EXPANDED_SQL)
-
     check_symbol_exists(
       sqlite3_load_extension
       sqlite3.h
@@ -93,6 +90,9 @@ if(TARGET SQLite::SQLite3)
       set(SQLITE_OMIT_LOAD_EXTENSION TRUE)
     endif()
   cmake_pop_check_state()
+
+  set(HAVE_SQLITE3_ERRSTR TRUE)
+  set(HAVE_SQLITE3_EXPANDED_SQL TRUE)
 endif()
 
 set(HAVE_SQLITE3 TRUE)