Add staticlib crate.

Author: rkistner

Cargo.lock

@@ -0,0 +1,24 @@
+[package]
+name = "powersync_static"
+edition.workspace = true
+version.workspace = true
+homepage.workspace = true
+repository.workspace = true
+license.workspace = true
+authors.workspace = true
+keywords.workspace = true
+
+[lib]
+name = "powersync"
+crate-type = ["staticlib"]
+
+[dependencies]
+sqlite_nostd = { workspace=true }
+
+[dependencies.powersync_core]
+path = "../core"
+default-features = false
+features = []
+
+[features]
+default = ["powersync_core/static", "powersync_core/omit_load_extension", "sqlite_nostd/omit_load_extension"]

crates/static/Cargo.toml

@@ -0,0 +1,3 @@
+# powersync_loadable
+
+Builds the loadable extension as a static library, for environments where dynamic loading is not practical.

crates/static/README.md

@@ -0,0 +1,32 @@
+#![no_std]
+#![feature(vec_into_raw_parts)]
+#![feature(core_intrinsics)]
+#![allow(internal_features)]
+#![feature(lang_items)]
+#![feature(error_in_core)]
+
+extern crate alloc;
+
+// Defines sqlite3_powersync_init
+#[allow(unused_imports)]
+use powersync_core;
+
+// Use the SQLite allocator, allowing us to freely transfer memory between SQLite and Rust.
+#[cfg(not(test))]
+use sqlite_nostd::SQLite3Allocator;
+
+#[cfg(not(test))]
+#[global_allocator]
+static ALLOCATOR: SQLite3Allocator = SQLite3Allocator {};
+
+// Custom Panic handler for WASM and other no_std builds
+#[cfg(not(test))]
+#[panic_handler]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    core::intrinsics::abort()
+}
+
+#[cfg(not(target_family = "wasm"))]
+#[cfg(not(test))]
+#[lang = "eh_personality"]
+extern "C" fn eh_personality() {}

crates/static/src/lib.rs

@@ -23,3 +23,11 @@ RUSTFLAGS="-C link-arg=-sSIDE_MODULE=2 -C link-arg=-sASYNCIFY=1 -C link-arg=-sJS
     --features "powersync_core/static powersync_core/omit_load_extension sqlite_nostd/omit_load_extension" \
     -Z build-std=panic_abort,core,alloc \
     --target wasm32-unknown-emscripten
+
+# Static lib (works for both sync and asyncify builds)
+# target/wasm32-unknown-emscripten/wasm/libpowersync.a
+cargo build \
+  -p powersync_static \
+  --profile wasm \
+  -Z build-std=panic_abort,core,alloc \
+  --target wasm32-unknown-emscripten