Add wasi-threads and fast-interp feature flags

Separate WASI threads from shared memory so they can be
independently controlled. Add fast-interp feature to toggle
WAMR_BUILD_FAST_INTERP (defaults to off when not specified).

New features:
- wasi-threads: enables WAMR_BUILD_LIB_WASI_THREADS (implies shared-memory)
- fast-interp: enables WAMR_BUILD_FAST_INTERP

Author: jurgelenas

Cargo.toml

@@ -43,8 +43,10 @@ custom-section = ["wamr-sys/custom-section"]
 dump-call-stack = ["wamr-sys/dump-call-stack"]
 esp-idf = ["esp-idf-sys", "wamr-sys/esp-idf"]
 exception-handling = ["wamr-sys/exception-handling"]
+fast-interp = ["wamr-sys/fast-interp"]
 hw-bound-check = ["wamr-sys/hw-bound-check"]
 llvmjit = ["wamr-sys/llvmjit"]
 multi-module = ["wamr-sys/multi-module"]
 name-section = ["wamr-sys/name-section"]
 shared-memory = ["wamr-sys/shared-memory"]
+wasi-threads = ["wamr-sys/wasi-threads"]

crates/wamr-sys/Cargo.toml

@@ -35,9 +35,11 @@ custom-section = []
 dump-call-stack = []
 esp-idf = []
 exception-handling = []
+fast-interp = []
 hw-bound-check = []
 llvmjit = []
 multi-module = []
 name-section = [ "custom-section" ]
 shared-memory = []
 std = []
+wasi-threads = ["shared-memory"]

crates/wamr-sys/build.rs

@@ -56,6 +56,8 @@ struct FeatureFlags {
     disable_hw_bound_check: String,
     enable_exception_handling: String,
     enable_shared_memory: String,
+    enable_wasi_threads: String,
+    enable_fast_interp: String,
 }
 
 fn get_feature_flags() -> FeatureFlags {
@@ -68,6 +70,8 @@ fn get_feature_flags() -> FeatureFlags {
         disable_hw_bound_check: if cfg!(feature = "hw-bound-check") { "0" } else { "1" }.to_string(),
         enable_exception_handling: if cfg!(feature = "exception-handling") { "1" } else { "0" }.to_string(),
         enable_shared_memory: if cfg!(feature = "shared-memory") { "1" } else { "0" }.to_string(),
+        enable_wasi_threads: if cfg!(feature = "wasi-threads") { "1" } else { "0" }.to_string(),
+        enable_fast_interp: if cfg!(feature = "fast-interp") { "1" } else { "0" }.to_string(),
     }
 }
 
@@ -102,7 +106,7 @@ fn setup_config(
     let mut cfg = Config::new(wamr_root);
     cfg.define("WAMR_BUILD_AOT", "1")
         .define("WAMR_BUILD_INTERP", "1")
-        .define("WAMR_BUILD_FAST_INTERP", "1")
+        .define("WAMR_BUILD_FAST_INTERP", &feature_flags.enable_fast_interp)
         .define("WAMR_BUILD_JIT", &feature_flags.enable_llvm_jit)
         .define("WAMR_BUILD_BULK_MEMORY", "1")
         .define("WAMR_BUILD_REF_TYPES", "1")
@@ -117,6 +121,7 @@ fn setup_config(
         .define("WAMR_BUILD_LOAD_CUSTOM_SECTION", &feature_flags.enable_custom_section)
         .define("WAMR_BUILD_EXCE_HANDLING", &feature_flags.enable_exception_handling)
         .define("WAMR_BUILD_SHARED_MEMORY", &feature_flags.enable_shared_memory)
+        .define("WAMR_BUILD_LIB_WASI_THREADS", &feature_flags.enable_wasi_threads)
         .define("WAMR_BUILD_THREAD_MGR", &feature_flags.enable_shared_memory);
 
     // always assume non-empty strings for these environment variables