build: disable kawa default features on non x86_64

e2e/src/mock/sync_backend.rs

@@ -48,7 +48,7 @@ impl Backend {
         let timeout = Duration::from_millis(100);
         let timeout = libc::timeval {
             tv_sec: 0,
-            tv_usec: timeout.subsec_micros().into(),
+            tv_usec: timeout.subsec_micros().try_into().unwrap_or(0),
         };
         let listener = unsafe {
             let fd = listener.into_raw_fd();

lib/Cargo.toml

@@ -65,13 +65,16 @@ serial_test = "^3.1.1"
 tiny_http = "^0.12.0"
 
 [features]
-default = ["simd"]
+default = []
 logs-debug = []
 logs-trace = []
 simd = ["kawa/simd"]
 splice = []
 tolerant-http1-parser = ["kawa/tolerant-parsing"]
 unstable = []
 
+[target.'cfg(target_arch = "x86_64")'.features]
+default = ["simd"]
+
 [badges]
 travis-ci = { repository = "sozu-proxy/sozu" }

lib/README.md

@@ -26,16 +26,3 @@ to force that connection to close if too many of those are lingering.
 - `lib/src/{http|https|tcp}.rs`: proxies for HTTP, HTTPS and TCP
 - `lib/src/server.rs`: the main event loop shared by all proxies
 - `lib/src/socket.rs`: abstraction over normal sockets
-
-## Build with or without SIMD
-
-SIMD stands for Single Instruction Multiple Data, and is used within the Kawa
-dependency to accelerate parsing.
-
-Kawa implements SIMD with the SSE instruction set, which is specific to intel.
-If you wish to use Sōzu on another architecture (MacOS for instance), you
-can disable this feature by doing:
-
-```
-cargo build --no-default-features
-```