Docs.

embed/README.md

@@ -19,11 +19,22 @@ The following optional features are compiled in:
 - [uint](https://github.com/sqlite/sqlite/blob/master/ext/misc/uint.c)
 - [time](../sqlite3/time.c)
 
-See the [configuration options](../sqlite3/sqlite_cfg.h),
+See the [configuration options](../sqlite3/sqlite_opt.h),
 and [patches](../sqlite3) applied.
 
 Built using [`wasi-sdk`](https://github.com/WebAssembly/wasi-sdk),
 and [`binaryen`](https://github.com/WebAssembly/binaryen).
 
 The build is easily reproducible, and verifiable, using
-[Artifact Attestations](https://github.com/ncruces/go-sqlite3/attestations).
+[Artifact Attestations](https://github.com/ncruces/go-sqlite3/attestations).
+
+### Customizing the build
+
+You can use your own custom build of SQLite.
+
+Examples of custom builds of SQLite are:
+- [`github.com/ncruces/go-sqlite3/embed/bcw2`](https://github.com/ncruces/go-sqlite3/tree/main/embed/bcw2)
+  built from a branch supporting [`BEGIN CONCURRENT`](https://sqlite.org/src/doc/begin-concurrent/doc/begin_concurrent.md)
+  and [Wal2](https://www.sqlite.org/cgi/src/doc/wal2/doc/wal2.md).
+- [`github.com/asg017/sqlite-vec-go-bindings/ncruces`](https://github.com/asg017/sqlite-vec-go-bindings)
+  which includes the [`sqlite-vec`](https://github.com/asg017/sqlite-vec) vector search extension.

embed/bcw2/README.md

@@ -1,7 +1,7 @@
 # Embeddable Wasm build of SQLite
 
 This folder includes an embeddable Wasm build of SQLite 3.46.0, including the experimental
-[BEGIN CONCURRENT](https://sqlite.org/src/doc/begin-concurrent/doc/begin_concurrent.md) and
+[`BEGIN CONCURRENT`](https://sqlite.org/src/doc/begin-concurrent/doc/begin_concurrent.md) and
 [Wal2](https://www.sqlite.org/cgi/src/doc/wal2/doc/wal2.md) patches.
 
 > [!IMPORTANT]  

embed/bcw2/build.sh

@@ -7,7 +7,7 @@ ROOT=../../
 BINARYEN="$ROOT/tools/binaryen/bin"
 WASI_SDK="$ROOT/tools/wasi-sdk/bin"
 
-trap 'rm -rf build sqlite bcw2.tmp' EXIT
+trap 'rm -rf build/ sqlite/ bcw2.tmp' EXIT
 
 mkdir -p build/ext/
 cp "$ROOT"/sqlite3/*.[ch] build/

embed/build.sh

@@ -7,6 +7,8 @@ ROOT=../
 BINARYEN="$ROOT/tools/binaryen/bin"
 WASI_SDK="$ROOT/tools/wasi-sdk/bin"
 
+trap 'rm -f sqlite3.tmp' EXIT
+
 "$WASI_SDK/clang" --target=wasm32-wasi -std=c23 -g0 -O2 \
 	-Wall -Wextra -Wno-unused-parameter -Wno-unused-function \
 	-o sqlite3.wasm "$ROOT/sqlite3/main.c" \
@@ -23,7 +25,6 @@ WASI_SDK="$ROOT/tools/wasi-sdk/bin"
 	-DSQLITE_CUSTOM_INCLUDE=sqlite_opt.h \
 	$(awk '{print "-Wl,--export="$0}' exports.txt)
 
-trap 'rm -f sqlite3.tmp' EXIT
 "$BINARYEN/wasm-ctor-eval" -g -c _initialize sqlite3.wasm -o sqlite3.tmp
 "$BINARYEN/wasm-opt" -g --strip --strip-producers -c -O3 \
 	sqlite3.tmp -o sqlite3.wasm \