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| 1 | +// https://github.com/xamarin/xamarin-android/blob/34acbbae6795854cc4e9f8eb7167ab011e0266b4/src/Xamarin.Android.Build.Tasks/Utilities/MonoAndroidHelper.cs#L251 |
| 2 | + |
| 3 | +using System; |
| 4 | +using System.IO; |
| 5 | +using System.Linq; |
| 6 | +using Microsoft.Build.Framework; |
| 7 | + |
| 8 | +namespace Microsoft.Android.Build.Tasks |
| 9 | +{ |
| 10 | + public static class AndroidRidAbiHelper |
| 11 | + { |
| 12 | + static readonly string[] ValidAbis = new[]{ |
| 13 | + "arm64-v8a", |
| 14 | + "armeabi-v7a", |
| 15 | + "x86", |
| 16 | + "x86_64", |
| 17 | + }; |
| 18 | + |
| 19 | + public static string GetNativeLibraryAbi (string lib) |
| 20 | + { |
| 21 | + // The topmost directory the .so file is contained within |
| 22 | + var dir = Path.GetFileName (Path.GetDirectoryName (lib)).ToLowerInvariant (); |
| 23 | + if (dir.StartsWith ("interpreter-", StringComparison.Ordinal)) { |
| 24 | + dir = dir.Substring (12); |
| 25 | + } |
| 26 | + if (ValidAbis.Contains (dir)) { |
| 27 | + return dir; |
| 28 | + } |
| 29 | + return null; |
| 30 | + } |
| 31 | + |
| 32 | + public static string GetNativeLibraryAbi (ITaskItem lib) |
| 33 | + { |
| 34 | + // If Abi is explicitly specified, simply return it. |
| 35 | + var lib_abi = lib.GetMetadata ("Abi"); |
| 36 | + |
| 37 | + if (!string.IsNullOrWhiteSpace (lib_abi)) |
| 38 | + return lib_abi; |
| 39 | + |
| 40 | + // Try to figure out what type of abi this is from the path |
| 41 | + // First, try nominal "Link" path. |
| 42 | + var link = lib.GetMetadata ("Link"); |
| 43 | + if (!string.IsNullOrWhiteSpace (link)) { |
| 44 | + var linkdirs = link.ToLowerInvariant ().Split ('/', '\\'); |
| 45 | + lib_abi = ValidAbis.Where (p => linkdirs.Contains (p)).FirstOrDefault (); |
| 46 | + } |
| 47 | + |
| 48 | + // Check for a RuntimeIdentifier |
| 49 | + var rid = lib.GetMetadata ("RuntimeIdentifier"); |
| 50 | + if (!string.IsNullOrWhiteSpace (rid)) { |
| 51 | + lib_abi = RuntimeIdentifierToAbi (rid); |
| 52 | + } |
| 53 | + |
| 54 | + if (!string.IsNullOrWhiteSpace (lib_abi)) |
| 55 | + return lib_abi; |
| 56 | + |
| 57 | + // If not resolved, use ItemSpec |
| 58 | + return GetNativeLibraryAbi (lib.ItemSpec); |
| 59 | + } |
| 60 | + |
| 61 | + /// <summary> |
| 62 | + /// Converts .NET 5 RIDs to Android ABIs or an empty string if no match. |
| 63 | + /// |
| 64 | + /// Known RIDs: |
| 65 | + /// "android.21-arm64" -> "arm64-v8a" |
| 66 | + /// "android.21-arm" -> "armeabi-v7a" |
| 67 | + /// "android.21-x86" -> "x86" |
| 68 | + /// "android.21-x64" -> "x86_64" |
| 69 | + /// "android-arm64" -> "arm64-v8a" |
| 70 | + /// "android-arm" -> "armeabi-v7a" |
| 71 | + /// "android-x86" -> "x86" |
| 72 | + /// "android-x64" -> "x86_64" |
| 73 | + /// </summary> |
| 74 | + public static string RuntimeIdentifierToAbi (string runtimeIdentifier) |
| 75 | + { |
| 76 | + if (string.IsNullOrEmpty (runtimeIdentifier) || !runtimeIdentifier.StartsWith ("android", StringComparison.OrdinalIgnoreCase)) { |
| 77 | + return ""; |
| 78 | + } |
| 79 | + if (runtimeIdentifier.EndsWith ("-arm64", StringComparison.OrdinalIgnoreCase)) { |
| 80 | + return "arm64-v8a"; |
| 81 | + } |
| 82 | + if (runtimeIdentifier.EndsWith ("-arm", StringComparison.OrdinalIgnoreCase)) { |
| 83 | + return "armeabi-v7a"; |
| 84 | + } |
| 85 | + if (runtimeIdentifier.EndsWith ("-x86", StringComparison.OrdinalIgnoreCase)) { |
| 86 | + return "x86"; |
| 87 | + } |
| 88 | + if (runtimeIdentifier.EndsWith ("-x64", StringComparison.OrdinalIgnoreCase)) { |
| 89 | + return "x86_64"; |
| 90 | + } |
| 91 | + return ""; |
| 92 | + } |
| 93 | + } |
| 94 | +} |
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