Merge pull request RustPython#3802 from youknowone/fix-musl

disable schedparam from musl

Author: youknowone

.github/workflows/ci.yaml

@@ -89,8 +89,8 @@ jobs:
         with:
           target: i686-unknown-linux-gnu
 
-      - name: Install gcc-multilib
-        run: sudo apt-get update && sudo apt-get install gcc-multilib
+      - name: Install gcc-multilib and musl-tools
+        run: sudo apt-get update && sudo apt-get install gcc-multilib musl-tools
       - name: Check compilation for x86 32bit
         uses: actions-rs/cargo@v1
         with:
@@ -107,6 +107,16 @@ jobs:
           command: check
           args: --target aarch64-linux-android
 
+      - uses: actions-rs/toolchain@v1
+        with:
+          target: i686-unknown-linux-musl
+
+      - name: Check compilation for musl
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --target i686-unknown-linux-musl
+
       - uses: actions-rs/toolchain@v1
         with:
           target: wasm32-unknown-unknown

vm/src/stdlib/posix.rs

@@ -556,6 +556,7 @@ pub mod module {
             target_os = "freebsd",
             target_os = "android"
         ))]
+        #[cfg(not(target_env = "musl"))]
         fn try_to_libc(&self, vm: &VirtualMachine) -> PyResult<libc::sched_param> {
             use crate::AsObject;
             let priority_class = self.sched_priority.class();
@@ -625,6 +626,7 @@ pub mod module {
         target_os = "freebsd",
         target_os = "android"
     ))]
+    #[cfg(not(target_env = "musl"))]
     #[pyfunction]
     fn sched_setscheduler(args: SchedSetschedulerArgs, vm: &VirtualMachine) -> PyResult<i32> {
         let libc_sched_param = args.sched_param_obj.try_to_libc(vm)?;
@@ -675,6 +677,7 @@ pub mod module {
         target_os = "freebsd",
         target_os = "android"
     ))]
+    #[cfg(not(target_env = "musl"))]
     #[pyfunction]
     fn sched_setparam(args: SchedSetParamArgs, vm: &VirtualMachine) -> PyResult<i32> {
         let libc_sched_param = args.sched_param_obj.try_to_libc(vm)?;