esp-wifi: other crates also provide strchr (littlefs2-sys) (#2096)

* esp-wifi: other crates also provide strchr (littlefs2-sys) * esp-wifi: other crates also provide strchr (littlefs2-sys) * changelog * fmt :-(
esp-rs · Sep 6, 2024 · 492e35a · 492e35a
1 parent 17daa46
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diff --git a/esp-wifi/CHANGELOG.md b/esp-wifi/CHANGELOG.md
@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Added `have-strchr` feature to disable including `strchr` (#2096)
+
 ### Changed
 
 ### Fixed

diff --git a/esp-wifi/Cargo.toml b/esp-wifi/Cargo.toml
@@ -133,6 +133,7 @@ wifi-default = ["ipv4", "tcp", "udp", "icmp", "igmp", "dns", "dhcpv4"]
 defmt = ["dep:defmt", "smoltcp?/defmt", "esp-hal/defmt"]
 log = ["dep:log", "esp-hal/log"]
 sniffer = ["wifi"]
+have-strchr = []
 
 [package.metadata.docs.rs]
 features = [

diff --git a/esp-wifi/src/compat/misc.rs b/esp-wifi/src/compat/misc.rs
@@ -46,6 +46,12 @@ unsafe extern "C" fn strcmp(str1: *const i8, str2: *const i8) -> i32 {
     }
 }
 
+#[cfg(feature = "have-strchr")]
+extern "C" {
+    fn strchr(str: *const i8, c: i32) -> *const i8;
+}
+
+#[cfg(not(feature = "have-strchr"))]
 #[no_mangle]
 unsafe extern "C" fn strchr(str: *const i8, c: i32) -> *const i8 {
     trace!("strchr {:?} {}", str, c);