Updating the bundled SQLite3

SQLiteCpp ships a copy of the SQLite3 amalgamation under sqlite3/ so the CMake build works with no system dependency. The Meson build instead pulls SQLite from wrapdb via a wrap file. An upgrade touches both.

Do this on a dedicated branch named update-sqlite-X.Y.Z (for example update-sqlite-3.52.2), matching the SQLite version you are moving to.

1. Download the amalgamation

Get sqlite-amalgamation-NNNNNNN.zip from the SQLite download page. NNNNNNN encodes the version with two digits per component: 3.51.3 is 3510300.

2. Replace the vendored files

Extract and overwrite, verbatim, with the files from the zip:

• sqlite3/sqlite3.c
• sqlite3/sqlite3.h

Do not hand-edit them. Build-time feature flags (SQLITE_OMIT_LOAD_EXTENSION, SQLITE_ENABLE_COLUMN_METADATA, and the rest in [[sqlitecpp-sqlite-flags]]) are passed as compile definitions, never by patching the amalgamation.

3. Update sqlite3/README.md

• The amalgamation line: filename, version, and release date, e.g. "sqlite3.c" and "sqlite3.h" files from sqlite-amalgamation-3510300.zip (SQLite 3.51.3 2026-03-13)
• The copyright year, if the year has rolled over.

4. Update the copyright year

Bump the year in sqlite3/CMakeLists.txt if it changed (it tracks the same 2012-<year> range).

5. Update the Meson wrap (separate concern)

subprojects/sqlite3.wrap points at a wrapdb release and can lag behind the CMake amalgamation version. Bump it to the matching sqlite3_X.Y.Z-N package (the directory, source_url, source_filename, source_hash, patch_*, and wrapdb_version fields). This is often a separate PR from the amalgamation drop.

6. Build, test, and record

• Build and run the tests on both CMake and Meson (see [[sqlitecpp-build-cmake]] and [[sqlitecpp-build-meson]]).
• Update CHANGELOG.md following [[sqlitecpp-workflow]] conventions: Add one line (or update the existing one) under the current unreleased version heading: - Update SQLite from A.B.C to X.Y.Z (YYYY-MM-DD) (#NNN).

The SQLite version bump is independent of the SQLiteCpp version. Bumping the SQLiteCpp version and tagging are the release process: see [[sqlitecpp-release]].