Add CMake option SQLITE_ENABLE_DBSTAT_VTAB to enable DBSTAT read-only…

… eponymous virtual table extension when building internal sqlite3 library.

See more here: https://www.sqlite.org/dbstat.html

Fix #426 Support building SQLite with with SQLITE_ENABLE_DBSTAT_VTAB compile option

Disabled by default

CMakeLists.txt

@@ -253,6 +253,7 @@ option(SQLITECPP_INTERNAL_SQLITE "Add the internal SQLite3 source to the project
 if (SQLITECPP_INTERNAL_SQLITE)
     message(STATUS "Compile sqlite3 from source in subdirectory")
     option(SQLITE_ENABLE_RTREE "Enable RTree extension when building internal sqlite3 library." OFF)
+    option(SQLITE_ENABLE_DBSTAT_VTAB "Enable DBSTAT read-only eponymous virtual table extension when building internal sqlite3 library." OFF)
     # build the SQLite3 C library (for ease of use/compatibility) versus Linux sqlite3-dev package
     add_subdirectory(sqlite3)
     target_link_libraries(SQLiteCpp PUBLIC SQLite::SQLite3)

sqlite3/CMakeLists.txt

@@ -37,6 +37,13 @@ if (SQLITE_ENABLE_RTREE)
     message(STATUS "Compile sqlite3 with SQLITE_ENABLE_RTREE")
 endif (SQLITE_ENABLE_RTREE)
 
+if (SQLITE_ENABLE_DBSTAT_VTAB)
+    # Enable DBSTAT extension when building sqlite3
+    # See more here: https://www.sqlite.org/dbstat.html
+    target_compile_definitions(sqlite3 PUBLIC SQLITE_ENABLE_DBSTAT_VTAB)
+    message(STATUS "Compile sqlite3 with SQLITE_ENABLE_DBSTAT_VTAB")
+endif (SQLITE_ENABLE_DBSTAT_VTAB)
+
 if (UNIX AND (CMAKE_COMPILER_IS_GNUCXX OR ${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang"))
     set_target_properties(sqlite3 PROPERTIES COMPILE_FLAGS "-fPIC")