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Added ELF shared library support to LinkImportsTransformation.
Relates to #108
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| using System; | ||
| using System.ComponentModel; | ||
| using System.Diagnostics; | ||
| using System.IO; | ||
|
|
||
| namespace Biohazrd.Tests.Common | ||
| { | ||
| public static partial class LlvmTools | ||
| { | ||
| private static string? ClangPath = null; | ||
| private static Exception? LlvmToolchainRootLocationFailureException = null; | ||
|
|
||
| private static string? TryFindClang(out Exception? exception) | ||
| { | ||
| if (ClangPath is not null) | ||
| { | ||
| exception = null; | ||
| return ClangPath; | ||
| } | ||
|
|
||
| if (LlvmToolchainRootLocationFailureException is not null) | ||
| { | ||
| exception = LlvmToolchainRootLocationFailureException; | ||
| return null; | ||
| } | ||
|
|
||
| // It's not super clear if Win32Exception.NativeErrorCode is actually errno on Unix-like systems when Process.Start fails due to a missing executable, | ||
| // but it doesn't actually matter since ERROR_FILE_NOT_FOUND and ENOENT are both 2. | ||
| const int ERROR_FILE_NOT_FOUND = 2; | ||
|
|
||
| // Check if Clang is present on the system PATH | ||
| try | ||
| { | ||
| using Process clang = Process.Start("clang", "--version"); | ||
| clang.WaitForExit(); | ||
|
|
||
| if (clang.ExitCode == 0) | ||
| { | ||
| exception = null; | ||
| return ClangPath = "clang"; | ||
| } | ||
| else | ||
| { | ||
| exception = new Exception("The Clang install found on the system PATH appears to be non-functional."); | ||
| LlvmToolchainRootLocationFailureException = exception; | ||
| return null; | ||
| } | ||
| } | ||
| catch (Win32Exception ex) when (ex.NativeErrorCode == ERROR_FILE_NOT_FOUND) | ||
| { exception = new FileNotFoundException("Clang was not found on the system PATH."); } | ||
| catch (Exception ex) | ||
| { | ||
| exception = new Exception($"The Clang install found on the system PATH appears to be unusable: {ex.Message}.", ex); | ||
| LlvmToolchainRootLocationFailureException = exception; | ||
| return null; | ||
| } | ||
|
|
||
| // Find Clang from Visual Studio if the appropriate component is installed | ||
| if (OperatingSystem.IsWindows()) | ||
| { | ||
| try | ||
| { | ||
| // The other LLVM-related component (Microsoft.VisualStudio.Component.VC.Llvm.ClangToolset) is only for using clang-cl for building C++ MSBuild projects. | ||
| VisualStudioLocator locator = new("Microsoft.VisualStudio.Component.VC.Llvm.Clang"); | ||
| string visualStudioRoot = locator.LocateVisualStudio(); | ||
| string visualStudioClangPath = Path.Combine(visualStudioRoot, "VC", "Tools", "Llvm", "bin", "clang.exe"); | ||
|
|
||
| if (!File.Exists(visualStudioClangPath)) | ||
| { throw new FileNotFoundException("Visual Studio install claims to have LLVM toolchain but clang.exe was not found.", visualStudioClangPath); } | ||
|
|
||
| return ClangPath = visualStudioClangPath; | ||
| } | ||
| catch (Exception ex) | ||
| { exception = new AggregateException(exception, ex); } | ||
| } | ||
|
|
||
| // Clang is not installed | ||
| LlvmToolchainRootLocationFailureException = exception; | ||
| return null; | ||
| } | ||
|
|
||
| public static Exception? IsClangAvailable() | ||
| { | ||
| string? clangPath = TryFindClang(out Exception? exception); | ||
| Debug.Assert(exception is not null || clangPath is not null); | ||
| return exception; | ||
| } | ||
|
|
||
| public static string GetClangPath() | ||
| { | ||
| string? clangPath = TryFindClang(out Exception? exception); | ||
|
|
||
| if (exception is not null) | ||
| { | ||
| Debug.Assert(clangPath is null); | ||
| throw exception; | ||
| } | ||
|
|
||
| Debug.Assert(clangPath is not null); | ||
| return clangPath; | ||
| } | ||
| } | ||
| } |
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