rs, sys: document build feature

Author: jiegec

CHANGELOG.md

@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Expose `CS_OPT_UNSIGNED` via `Capstone::set_unsigned`
 - Expose `CS_OPT_MNEMONIC` via `Capstone::set_mnemonic`
 - Expose `cs_disasm_iter` via `Capstone::disasm_iter`
+- Add `build` feature to speed up `cargo check` by building without native code
 
 ### Changed
 - `InsnDetail::regs_read()`/`InsnDetail::regs_write()` return more of the accessed registers

README.md

@@ -121,11 +121,13 @@ More complex demos welcome!
 - `std`<sup>&dagger;</sup>: enable `std`-only features, such as the
   [`Error` trait](https://doc.rust-lang.org/std/error/trait.Error.html)
 - `use_bindgen`: run `bindgen` to generate Rust bindings to Capstone C library
-  instead of using pre-generated bindings (not recommended).
+  instead of using pre-generated bindings (not recommended)
 - `arch_$ARCH`<sup>&dagger;</sup>: enable arch `$ARCH` support in capstone,
-  e.g. `arch_arm64` enables arch arm64 support.
+  e.g. `arch_arm64` enables arch arm64 support
 - `support_all_archs`<sup>&dagger;</sup>: enable all archs available
-  in capstone, imply all `arch_$ARCH` features.
+  in capstone, imply all `arch_$ARCH` features
+- `build`<sup>&dagger;</sup>: compile and link capstone C library,
+  you can disable it to speed up `cargo check` by 5x
 
 <sup>&dagger;</sup>: enabled by default
 

capstone-sys/CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Support for MOS65XX arch
 - Support for SH arch
 - Arch-specific features flags to enable/disable arch support
+- Add `build` feature to speed up `cargo check` by building without native code
 
 ### Changed
 - Bump bundled capstone to 5.0.6