Merge Backend into EngineBuilder and refactor feature flags

Cargo.toml

@@ -11,7 +11,7 @@ autoexamples = false
 
 [dependencies]
 wasmer = { version = "=2.3.0", path = "lib/api", default-features = false }
-wasmer-compiler = { version = "=2.3.0", path = "lib/compiler", features = ["engine_compilation"] }
+wasmer-compiler = { version = "=2.3.0", path = "lib/compiler", features = ["compiler"] }
 wasmer-compiler-cranelift = { version = "=2.3.0", path = "lib/compiler-cranelift", optional = true }
 wasmer-compiler-singlepass = { version = "=2.3.0", path = "lib/compiler-singlepass", optional = true }
 wasmer-compiler-llvm = { version = "=2.3.0", path = "lib/compiler-llvm", optional = true }
@@ -64,7 +64,7 @@ glob = "0.3"
 rustc_version = "0.4"
 
 [dev-dependencies]
-wasmer = { version = "=2.3.0", path = "lib/api", default-features = false, features = ["default-cranelift"] }
+wasmer = { version = "=2.3.0", path = "lib/api", default-features = false, features = ["cranelift"] }
 anyhow = "1.0"
 criterion = "0.3"
 lazy_static = "1.4"

Makefile

@@ -359,7 +359,7 @@ check-wasmer-wasm:
 
 check-capi: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) check $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml  \
-		--no-default-features --features wat,compilation,wasi,middlewares $(capi_compiler_features)
+		--no-default-features --features wat,compiler,wasi,middlewares $(capi_compiler_features)
 
 build-wasmer:
 	$(CARGO_BINARY) build $(CARGO_TARGET) --release --manifest-path lib/cli/Cargo.toml $(compiler_features) --bin wasmer
@@ -421,50 +421,50 @@ build-docs-capi: capi-setup
 	# when generating the documentation, we rename it to its
 	# crate's name. Then we restore the lib's name.
 	sed "$(SEDI)"  -e 's/name = "wasmer" # ##lib.name##/name = "wasmer_c_api" # ##lib.name##/' lib/c-api/Cargo.toml
-	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) doc $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --no-deps --features wat,compilation,cranelift,wasi
+	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) doc $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --no-deps --features wat,compiler,cranelift,wasi
 	sed "$(SEDI)"  -e 's/name = "wasmer_c_api" # ##lib.name##/name = "wasmer" # ##lib.name##/' lib/c-api/Cargo.toml
 
 build-capi: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wat,compilation,wasi,middlewares $(capi_compiler_features)
+		--no-default-features --features wat,compiler,wasi,middlewares $(capi_compiler_features)
 
 build-capi-singlepass: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wat,compilation,singlepass,wasi,middlewares
+		--no-default-features --features wat,compiler,singlepass,wasi,middlewares
 
 build-capi-singlepass-universal: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wat,compilation,singlepass,wasi,middlewares
+		--no-default-features --features wat,compiler,singlepass,wasi,middlewares
 
 build-capi-cranelift: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wat,compilation,cranelift,wasi,middlewares
+		--no-default-features --features wat,compiler,cranelift,wasi,middlewares
 
 build-capi-cranelift-universal: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wat,compilation,cranelift,wasi,middlewares
+		--no-default-features --features wat,compiler,cranelift,wasi,middlewares
 
 build-capi-llvm: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wat,compilation,llvm,wasi,middlewares
+		--no-default-features --features wat,compiler,llvm,wasi,middlewares
 
 build-capi-llvm-universal: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wat,compilation,llvm,wasi,middlewares
+		--no-default-features --features wat,compiler,llvm,wasi,middlewares
 
 # Headless (we include the minimal to be able to run)
 
 build-capi-headless-universal: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features compilation,wasi
+		--no-default-features --features compiler-headless,wasi
 
 build-capi-headless-all: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" $(CARGO_BINARY) build $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features compilation,wasi
+		--no-default-features --features compiler-headless,wasi
 
 build-capi-headless-ios: capi-setup
 	RUSTFLAGS="${RUSTFLAGS}" cargo lipo --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wasi
+		--no-default-features --features compiler-headless,wasi
 
 #####
 #
@@ -520,7 +520,7 @@ test-capi: build-capi package-capi $(foreach compiler_engine,$(capi_compilers_en
 
 test-capi-crate-%:
 	WASMER_CAPI_CONFIG=$(shell echo $@ | sed -e s/test-capi-crate-//) $(CARGO_BINARY) test $(CARGO_TARGET) --manifest-path lib/c-api/Cargo.toml --release \
-		--no-default-features --features wat,compilation,wasi,middlewares $(capi_compiler_features) -- --nocapture
+		--no-default-features --features wat,compiler,wasi,middlewares $(capi_compiler_features) -- --nocapture
 
 test-capi-integration-%:
 	# Test the Wasmer C API tests for C
@@ -698,7 +698,7 @@ update-testsuite:
 
 lint-packages: RUSTFLAGS += -D dead-code -D nonstandard-style -D unused-imports -D unused-mut -D unused-variables -D unused-unsafe -D unreachable-patterns -D bad-style -D improper-ctypes -D unused-allocation -D unused-comparisons -D while-true -D unconditional-recursion -D bare-trait-objects -D function_item_references # TODO: add `-D missing-docs`
 lint-packages:
-	RUSTFLAGS="${RUSTFLAGS}" cargo clippy --all -- -D clippy::all
+	RUSTFLAGS="${RUSTFLAGS}" cargo clippy --all --exclude wasmer-cli -- -D clippy::all
 	RUSTFLAGS="${RUSTFLAGS}" cargo clippy --manifest-path lib/cli/Cargo.toml $(compiler_features) -- -D clippy::all
 	RUSTFLAGS="${RUSTFLAGS}" cargo clippy --manifest-path fuzz/Cargo.toml $(compiler_features) -- -D clippy::all
 

benches/static_and_dynamic_functions.rs

@@ -149,23 +149,34 @@ pub fn run_basic_dynamic_function(store: &Store, compiler_name: &str, c: &mut Cr
 fn run_static_benchmarks(_c: &mut Criterion) {
     #[cfg(feature = "llvm")]
     {
-        let mut store =
-            Store::new_with_engine(&Backend::new(wasmer_compiler_llvm::LLVM::new()).engine());
+        let mut store = Store::new_with_engine(
+            &EngineBuilder::new(Some(wasmer_compiler_llvm::LLVM::new()), None, None).engine(),
+        );
         run_basic_static_function(&store, "llvm", c);
     }
 
     #[cfg(feature = "cranelift")]
     {
         let mut store = Store::new_with_engine(
-            &Backend::new(wasmer_compiler_cranelift::Cranelift::new()).engine(),
+            &EngineBuilder::new(
+                Some(wasmer_compiler_cranelift::Cranelift::new()),
+                None,
+                None,
+            )
+            .engine(),
         );
         run_basic_static_function(&store, "cranelift", c);
     }
 
     #[cfg(feature = "singlepass")]
     {
         let mut store = Store::new_with_engine(
-            &Backend::new(wasmer_compiler_singlepass::Singlepass::new()).engine(),
+            &EngineBuilder::new(
+                Some(wasmer_compiler_singlepass::Singlepass::new()),
+                None,
+                None,
+            )
+            .engine(),
         );
         run_basic_static_function(&store, "singlepass", c);
     }
@@ -174,23 +185,34 @@ fn run_static_benchmarks(_c: &mut Criterion) {
 fn run_dynamic_benchmarks(_c: &mut Criterion) {
     #[cfg(feature = "llvm")]
     {
-        let mut store =
-            Store::new_with_engine(&Backend::new(wasmer_compiler_llvm::LLVM::new()).engine());
+        let mut store = Store::new_with_engine(
+            &EngineBuilder::new(Some(wasmer_compiler_llvm::LLVM::new()), None, None).engine(),
+        );
         run_basic_dynamic_function(&store, "llvm", c);
     }
 
     #[cfg(feature = "cranelift")]
     {
         let mut store = Store::new_with_engine(
-            &Backend::new(wasmer_compiler_cranelift::Cranelift::new()).engine(),
+            &EngineBuilder::new(
+                Some(wasmer_compiler_cranelift::Cranelift::new()),
+                None,
+                None,
+            )
+            .engine(),
         );
         run_basic_dynamic_function(&store, "cranelift", c);
     }
 
     #[cfg(feature = "singlepass")]
     {
         let mut store = Store::new_with_engine(
-            &Backend::new(wasmer_compiler_singlepass::Singlepass::new()).engine(),
+            &EngineBuilder::new(
+                Some(wasmer_compiler_singlepass::Singlepass::new()),
+                None,
+                None,
+            )
+            .engine(),
         );
         run_basic_dynamic_function(&store, "singlepass", c);
     }

docs/migration_to_3.0.0.md

@@ -130,7 +130,7 @@ let wasm_bytes = wat2wasm(
 )?;
 
 let compiler_config = Cranelift::default();
-let engine = Backend::new(compiler_config).engine();
+let engine = Universal::new(compiler_config).engine();
 let mut store = Store::new(&engine);
 let module = Module::new(&store, wasm_bytes)?;
 let instance = Instance::new(&module, &imports! {})?;

examples/compiler_cranelift.rs

@@ -11,7 +11,7 @@
 //! Ready?
 
 use wasmer::{imports, wat2wasm, Instance, Module, Store, Value};
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_cranelift::Cranelift;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -33,7 +33,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let compiler = Cranelift::default();
 
     // Create the store
-    let mut store = Store::new_with_engine(&Backend::new(compiler).engine());
+    let mut store = Store::new_with_engine(&EngineBuilder::new(compiler, None, None).engine());
 
     println!("Compiling module...");
     // Let's compile the Wasm module.

examples/compiler_llvm.rs

@@ -11,7 +11,7 @@
 //! Ready?
 
 use wasmer::{imports, wat2wasm, Instance, Module, Store, Value};
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_llvm::LLVM;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -33,7 +33,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let compiler = LLVM::default();
 
     // Create the store
-    let mut store = Store::new_with_engine(&Backend::new(compiler).engine());
+    let mut store = Store::new_with_engine(&EngineBuilder::new(compiler, None, None).engine());
 
     println!("Compiling module...");
     // Let's compile the Wasm module.

examples/compiler_singlepass.rs

@@ -11,7 +11,7 @@
 //! Ready?
 
 use wasmer::{imports, wat2wasm, Instance, Module, Store, Value};
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_singlepass::Singlepass;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -33,7 +33,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let compiler = Singlepass::default();
 
     // Create the store
-    let mut store = Store::new_with_engine(&Backend::new(compiler).engine());
+    let mut store = Store::new_with_engine(&EngineBuilder::new(compiler, None, None).engine());
 
     println!("Compiling module...");
     // Let's compile the Wasm module.

examples/early_exit.rs

@@ -20,7 +20,7 @@ use wasmer::{
     imports, wat2wasm, Function, FunctionEnv, FunctionEnvMut, Instance, Module, Store,
     TypedFunction,
 };
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_cranelift::Cranelift;
 
 // First we need to create an error type that we'll use to signal the end of execution.
@@ -58,7 +58,8 @@ fn main() -> anyhow::Result<()> {
     // Note that we don't need to specify the engine/compiler if we want to use
     // the default provided by Wasmer.
     // You can use `Store::default()` for that.
-    let mut store = Store::new_with_engine(&Backend::new(Cranelift::default()).engine());
+    let mut store =
+        Store::new_with_engine(&EngineBuilder::new(Cranelift::default(), None, None).engine());
     let env = FunctionEnv::new(&mut store, ());
 
     println!("Compiling module...");

examples/engine.rs

@@ -19,7 +19,7 @@
 //! Ready?
 
 use wasmer::{imports, wat2wasm, Instance, Module, Store, Value};
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_cranelift::Cranelift;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -49,7 +49,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     //
     // In this case, the engine is `wasmer_compiler` which roughly
     // means that the executable code will live in memory.
-    let engine = Backend::new(compiler_config).engine();
+    let engine = EngineBuilder::new(compiler_config, None, None).engine();
 
     // Create a store, that holds the engine.
     let mut store = Store::new_with_engine(&engine);

examples/engine_cross_compilation.rs

@@ -20,7 +20,7 @@
 
 use std::str::FromStr;
 use wasmer::{wat2wasm, Module, RuntimeError, Store};
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_cranelift::Cranelift;
 use wasmer_types::{CpuFeature, Target, Triple};
 
@@ -70,13 +70,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     // That's where we specify the target for the compiler.
     //
     // Use the Universal engine.
-    let engine = Backend::new(compiler_config)
-        // Here we go.
-        // Pass the target to the engine! The engine will share
-        // this information with the compiler.
-        .target(target)
-        // Get the engine.
-        .engine();
+    let mut engine = EngineBuilder::new(compiler_config, Some(target), None).engine();
 
     // Create a store, that holds the engine.
     let mut store = Store::new_with_engine(&engine);

examples/engine_headless.rs

@@ -52,7 +52,7 @@ use wasmer::Instance;
 use wasmer::Module;
 use wasmer::Store;
 use wasmer::Value;
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_cranelift::Cranelift;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -82,7 +82,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
 
         println!("Creating univesral engine...");
         // Define the engine that will drive everything.
-        let engine = Backend::new(compiler_config).engine();
+        let engine = EngineBuilder::new(compiler_config, None, None).engine();
 
         // Create a store, that holds the engine.
         let mut store = Store::new_with_engine(&engine);
@@ -105,7 +105,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     {
         println!("Creating headless Universal engine...");
         // We create a headless Universal engine.
-        let engine = Backend::headless().engine();
+        let engine = EngineBuilder::headless().engine();
         let mut store = Store::new_with_engine(&engine);
         let mut env = FunctionEnv::new(&mut store, ());
 

examples/errors.rs

@@ -14,7 +14,7 @@
 //! Ready?
 
 use wasmer::{imports, wat2wasm, FunctionEnv, Instance, Module, Store, TypedFunction};
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_cranelift::Cranelift;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -39,7 +39,8 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Note that we don't need to specify the engine/compiler if we want to use
     // the default provided by Wasmer.
     // You can use `Store::default()` for that.
-    let mut store = Store::new_with_engine(&Backend::new(Cranelift::default()).engine());
+    let mut store =
+        Store::new_with_engine(&EngineBuilder::new(Cranelift::default(), None, None).engine());
     let mut env = FunctionEnv::new(&mut store, ());
 
     println!("Compiling module...");

examples/exports_function.rs

@@ -18,7 +18,7 @@
 //! Ready?
 
 use wasmer::{imports, wat2wasm, FunctionEnv, Instance, Module, Store, TypedFunction, Value};
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_cranelift::Cranelift;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -40,7 +40,8 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Note that we don't need to specify the engine/compiler if we want to use
     // the default provided by Wasmer.
     // You can use `Store::default()` for that.
-    let mut store = Store::new_with_engine(&Backend::new(Cranelift::default()).engine());
+    let mut store =
+        Store::new_with_engine(&EngineBuilder::new(Cranelift::default(), None, None).engine());
     let mut env = FunctionEnv::new(&mut store, ());
 
     println!("Compiling module...");

examples/exports_global.rs

@@ -18,7 +18,7 @@
 use wasmer::{
     imports, wat2wasm, FunctionEnv, Instance, Module, Mutability, Store, Type, TypedFunction, Value,
 };
-use wasmer_compiler::Backend;
+use wasmer_compiler::EngineBuilder;
 use wasmer_compiler_cranelift::Cranelift;
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
@@ -40,7 +40,8 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Note that we don't need to specify the engine/compiler if we want to use
     // the default provided by Wasmer.
     // You can use `Store::default()` for that.
-    let mut store = Store::new_with_engine(&Backend::new(Cranelift::default()).engine());
+    let mut store =
+        Store::new_with_engine(&EngineBuilder::new(Cranelift::default(), None, None).engine());
     let mut env = FunctionEnv::new(&mut store, ());
 
     println!("Compiling module...");