Fix macos compilation warnings.

crates/polkavm/src/api.rs

@@ -5,6 +5,7 @@ use alloc::vec::Vec;
 
 use polkavm_common::abi::{MemoryMap, MemoryMapBuilder, VM_ADDR_RETURN_TO_HOST};
 use polkavm_common::cast::cast;
+#[cfg_attr(not(target_os = "linux"), allow(unused_imports))]
 use polkavm_common::program::{
     build_static_dispatch_table, FrameKind, ISA32_V1_NoSbrk, ISA64_V1_NoSbrk, Imports, InstructionSet, Instructions, JumpTable, Opcode,
     ProgramBlob, Reg, ISA32_V1, ISA64_V1,
@@ -226,6 +227,7 @@ impl CompiledModuleKind {
 }
 
 pub(crate) struct ModulePrivate {
+    #[cfg_attr(not(target_os = "linux"), allow(dead_code))]
     engine_state: Option<Arc<EngineState>>,
     crosscheck: bool,
 
@@ -282,6 +284,7 @@ impl Module {
         self.state().dynamic_paging
     }
 
+    #[cfg_attr(not(target_os = "linux"), allow(dead_code))]
     pub(crate) fn compiled_module(&self) -> &CompiledModuleKind {
         &self.state().compiled_module
     }
@@ -340,6 +343,7 @@ impl Module {
         self.round_to_page_size_down(value) + (u32::from((value & self.state().page_size_mask) != 0) << self.state().page_shift)
     }
 
+    #[cfg_attr(not(target_os = "linux"), allow(dead_code))]
     pub(crate) fn address_to_page(&self, address: u32) -> u32 {
         address >> self.state().page_shift
     }
@@ -407,6 +411,7 @@ impl Module {
             }
         };
 
+        #[cfg_attr(not(target_os = "linux"), allow(unused_variables))]
         let exports = {
             log::trace!("Parsing exports...");
             let mut exports = Vec::with_capacity(1);

crates/polkavm/src/compiler.rs

@@ -151,6 +151,7 @@ where
     B: CompilerBitness,
 {
     #[allow(clippy::too_many_arguments)]
+    #[cfg(target_os = "linux")]
     pub(crate) fn new(
         cache: &CompilerCache,
         config: &'a ModuleConfig,

crates/polkavm/src/error.rs

@@ -71,6 +71,7 @@ impl Error {
     }
 
     #[cold]
+    #[cfg_attr(not(target_os = "linux"), allow(dead_code))]
     pub(crate) fn context(self, message: impl core::fmt::Display) -> Self {
         let string = match self.0 {
             ErrorKind::Owned(buffer) => format!("{}: {}", message, buffer),

crates/polkavm/src/lib.rs

@@ -59,6 +59,7 @@ mod config;
 mod gas;
 mod interpreter;
 mod linker;
+#[cfg(any(test, target_os = "linux"))]
 mod page_set;
 #[cfg(feature = "std")]
 mod source_cache;

crates/polkavm/src/mutex_std.rs

@@ -9,6 +9,7 @@ impl<T> Mutex<T> {
     }
 
     #[inline]
+    #[cfg_attr(not(target_os = "linux"), allow(dead_code))]
     pub fn lock(&self) -> std::sync::MutexGuard<T> {
         match self.0.lock() {
             Ok(mutable) => mutable,

crates/polkavm/src/page_set.rs

@@ -269,6 +269,7 @@ impl PageSet {
         }
     }
 
+    #[cfg_attr(not(target_os = "linux"), allow(dead_code))]
     pub fn clear(&mut self) {
         self.intervals.clear();
     }

crates/polkavm/src/utils.rs

@@ -60,6 +60,7 @@ where
     }
 
     #[inline]
+    #[cfg(target_os = "linux")]
     pub fn new_reusing_memory(mut memory: Self, capacity: u32) -> Self {
         memory.inner.clear();
         memory.inner.resize_with(capacity as usize, || None);
@@ -72,6 +73,7 @@ where
     }
 
     #[inline]
+    #[cfg(target_os = "linux")]
     pub fn len(&self) -> u32 {
         self.inner.len() as u32
     }
@@ -82,6 +84,7 @@ where
     }
 
     #[inline]
+    #[cfg(target_os = "linux")]
     pub fn clear(&mut self) {
         self.inner.clear();
     }