Fix build for Linux (#2257)

* Fix build for Linux.

* Fix Linux runtime issues.

* PR review + fix for Windows.

LibreHardwareMonitorLib/Hardware/Battery/BatteryGroup.cs

@@ -28,6 +28,7 @@ internal class BatteryGroup : IGroup
         if (Software.OperatingSystem.IsUnix)
             return;
 
+#if WINDOWS
         SetupDiDestroyDeviceInfoListSafeHandle hdev = PInvoke.SetupDiGetClassDevs(PInvoke.GUID_DEVICE_BATTERY,
                                                                                   null,
                                                                                   HWND.Null,
@@ -129,11 +130,13 @@ internal class BatteryGroup : IGroup
 
             hdev.Dispose();
         }
+#endif
     }
 
     /// <inheritdoc />
     public IReadOnlyList<IHardware> Hardware => _hardware;
 
+#if WINDOWS
     private static unsafe bool QueryStringFromBatteryInfo(SafeFileHandle battery, BATTERY_QUERY_INFORMATION bqi, out string value)
     {
         value = null;
@@ -161,6 +164,7 @@ internal class BatteryGroup : IGroup
 
         return result;
     }
+#endif
 
     /// <inheritdoc />
     public void Close()

LibreHardwareMonitorLib/Hardware/Computer.cs

@@ -512,7 +512,9 @@ public class Computer : IComputer
 
         _smbios = new SMBios();
 
-        Mutexes.Open();
+        if (Software.OperatingSystem.IsWindows8OrGreater)
+            Mutexes.Open();
+
         OpCode.Open();
 
         AddGroups();

LibreHardwareMonitorLib/Hardware/Cpu/IntelCpu.cs

@@ -38,6 +38,9 @@ internal sealed class IntelCpu : GenericCpu
 
     public IntelCpu(int processorIndex, CpuId[][] cpuId, ISettings settings) : base(processorIndex, cpuId, settings)
     {
+        if (Software.OperatingSystem.IsUnix)
+            return;
+
         _pawnModule = new IntelMsr();
 
         uint eax;
@@ -569,7 +572,7 @@ internal sealed class IntelCpu : GenericCpu
         float coreAvg = 0;
         uint eax;
 
-        for (int i = 0; i < _coreTemperatures.Length; i++)
+        for (int i = 0; i < _coreTemperatures?.Length; i++)
         {
             // if reading is valid
             if (_pawnModule.ReadMsr(IA32_THERM_STATUS_MSR, out eax, out _, _cpuId[i][0].Affinity) && (eax & 0x80000000) != 0)
@@ -704,7 +707,7 @@ internal sealed class IntelCpu : GenericCpu
             _coreVoltage.Value = ((edx >> 32) & 0xFFFF) / (float)(1 << 13);
         }
 
-        for (int i = 0; i < _coreVIDs.Length; i++)
+        for (int i = 0; i < _coreVIDs?.Length; i++)
         {
             if (_pawnModule.ReadMsr(IA32_PERF_STATUS, out _, out edx, _cpuId[i][0].Affinity) && ((edx >> 32) & 0xFFFF) > 0)
             {

LibreHardwareMonitorLib/Interop/PowerMonitor/Stm32PortFinder.cs

@@ -51,6 +51,7 @@ public static class Stm32PortFinder
     {
         var result = new List<string>();
 
+#if WINDOWS
         //Setup
         SetupDiDestroyDeviceInfoListSafeHandle devInfo = PInvoke.SetupDiGetClassDevs(PInvoke.GUID_DEVCLASS_PORTS, null, HWND.Null, SETUP_DI_GET_CLASS_DEVS_FLAGS.DIGCF_PRESENT);
 
@@ -102,8 +103,6 @@ public static class Stm32PortFinder
             devInfo.Dispose();
         }
 
-        return result;
-
         static string GetProperty(SafeHandle hDevInfo, SETUP_DI_REGISTRY_PROPERTY property, SP_DEVINFO_DATA devInfoData)
         {
             byte[] buffer = new byte[BufferSize];
@@ -116,6 +115,9 @@ public static class Stm32PortFinder
 
             return null;
         }
+#endif
+
+        return result;
     }
 
     private static string NormalizeString(string str)

LibreHardwareMonitorLib/LibreHardwareMonitorLib.csproj

@@ -2,7 +2,7 @@
   <PropertyGroup>
     <TargetFrameworks>net472;netstandard2.0;net8.0;net9.0;net10.0</TargetFrameworks>
     <Platforms>x64;x86;ARM64</Platforms>
-    <RuntimeIdentifiers>win-x64;win-x86;win-arm64</RuntimeIdentifiers>
+    <RuntimeIdentifiers>win-x64;win-x86;win-arm64;linux-x64;linux-arm64</RuntimeIdentifiers>
     <AssemblyName>LibreHardwareMonitorLib</AssemblyName>
     <RootNamespace>LibreHardwareMonitor</RootNamespace>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
@@ -38,6 +38,14 @@
     <OutputPath>..\bin\Release\$(Platform)\</OutputPath>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(OS)' == 'Windows_NT'">
+    <DefineConstants>$(DefineConstants);WINDOWS</DefineConstants>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(OS)' != 'Windows_NT'">
+    <DefineConstants>$(DefineConstants);LINUX</DefineConstants>
+  </PropertyGroup>
+
   <ItemGroup>
     <EmbeddedResource Include="Resources\PawnIo\AMDFamily0F.bin" />
     <EmbeddedResource Include="Resources\PawnIo\AMDFamily10.bin" />