Added reading of dependencies of Mach-O (OS X) binaries.

Signed-off-by: Dimitar Dobrev <dpldobrev@protonmail.com>

src/CppParser/Parser.cpp

@@ -19,6 +19,7 @@
 #include <llvm/Object/COFF.h>
 #include <llvm/Object/ObjectFile.h>
 #include <llvm/Object/ELFObjectFile.h>
+#include <llvm/Object/MachO.h>
 #include <llvm/Option/ArgList.h>
 #include <llvm/IR/LLVMContext.h>
 #include <llvm/IR/Module.h>
@@ -3302,31 +3303,48 @@ ParserResultKind Parser::ParseSharedLib(llvm::StringRef File,
         {
             ReadELFDependencies(ELFObjectFile->getELFFile(), NativeLib);
         }
+        return ParserResultKind::Success;
     }
-    else
+
+    if (ObjectFile->isCOFF())
     {
-        if (auto COFFObjectFile = llvm::dyn_cast<llvm::object::COFFObjectFile>(ObjectFile))
+        auto COFFObjectFile = static_cast<llvm::object::COFFObjectFile*>(ObjectFile);
+        for (auto ExportedSymbol : COFFObjectFile->export_directories())
         {
-            for (auto ExportedSymbol : COFFObjectFile->export_directories())
-            {
-                llvm::StringRef Symbol;
-                if (!ExportedSymbol.getSymbolName(Symbol))
-                    NativeLib->Symbols.push_back(Symbol);
-            }
-            for (auto ImportedSymbol : COFFObjectFile->import_directories())
-            {
-                llvm::StringRef Name;
-                if (!ImportedSymbol.getName(Name) && (Name.endswith(".dll") || Name.endswith(".DLL")))
-                    NativeLib->Dependencies.push_back(Name);
-            }
+            llvm::StringRef Symbol;
+            if (!ExportedSymbol.getSymbolName(Symbol))
+                NativeLib->Symbols.push_back(Symbol);
         }
-        else
+        for (auto ImportedSymbol : COFFObjectFile->import_directories())
         {
-            return ParserResultKind::Error;
+            llvm::StringRef Name;
+            if (!ImportedSymbol.getName(Name) && (Name.endswith(".dll") || Name.endswith(".DLL")))
+                NativeLib->Dependencies.push_back(Name);
         }
+        return ParserResultKind::Success;
     }
 
-    return ParserResultKind::Success;
+    if (ObjectFile->isMachO())
+    {
+        auto MachOObjectFile = static_cast<llvm::object::MachOObjectFile*>(ObjectFile);
+        for (const auto &Load : MachOObjectFile->load_commands())
+        {
+            if (Load.C.cmd == llvm::MachO::LC_ID_DYLIB ||
+                Load.C.cmd == llvm::MachO::LC_LOAD_DYLIB ||
+                Load.C.cmd == llvm::MachO::LC_LOAD_WEAK_DYLIB ||
+                Load.C.cmd == llvm::MachO::LC_REEXPORT_DYLIB ||
+                Load.C.cmd == llvm::MachO::LC_LAZY_LOAD_DYLIB ||
+                Load.C.cmd == llvm::MachO::LC_LOAD_UPWARD_DYLIB)
+            {
+                auto dl = MachOObjectFile->getDylibIDLoadCommand(Load);
+                auto lib = llvm::sys::path::filename(Load.Ptr + dl.dylib.name);
+                NativeLib->Dependencies.push_back(lib);
+            }
+        }
+        return ParserResultKind::Success;
+    }
+
+    return ParserResultKind::Error;
 }
 
 ParserResultKind Parser::ReadSymbols(llvm::StringRef File,

src/Generator.Tests/ParseELFTest.cs

@@ -1,24 +0,0 @@
-using CppSharp.Utils;
-using NUnit.Framework;
-
-namespace CppSharp.Generator.Tests
-{
-    [TestFixture]
-    public class ParseELFTest
-    {
-        [Test]
-        public void TestParseELF()
-        {
-            var driverOptions = new DriverOptions();
-            driverOptions.addLibraryDirs(GeneratorTest.GetTestsDirectory("Native"));
-            driverOptions.Libraries.Add("ls");
-            var driver = new Driver(driverOptions, new TextDiagnosticPrinter());
-            Assert.IsTrue(driver.ParseLibraries());
-            var dependencies = driver.Symbols.Libraries[0].Dependencies;
-            Assert.AreEqual("libselinux.so.1", dependencies[0]);
-            Assert.AreEqual("librt.so.1", dependencies[1]);
-            Assert.AreEqual("libacl.so.1", dependencies[2]);
-            Assert.AreEqual("libc.so.6", dependencies[3]);
-        }
-    }
-}

src/Generator.Tests/ReadNativeDependenciesTest.cs

@@ -0,0 +1,52 @@
+using CppSharp.Utils;
+using NUnit.Framework;
+
+namespace CppSharp.Generator.Tests
+{
+    [TestFixture]
+    public class ReadNativeDependenciesTest
+    {
+        [Test]
+        public void TestReadDependenciesWindows()
+        {
+            var driverOptions = new DriverOptions();
+            driverOptions.addLibraryDirs(GeneratorTest.GetTestsDirectory("Native"));
+            driverOptions.Libraries.Add("ls-windows");
+            var driver = new Driver(driverOptions, new TextDiagnosticPrinter());
+            Assert.IsTrue(driver.ParseLibraries());
+            var dependencies = driver.Symbols.Libraries[0].Dependencies;
+            Assert.AreEqual("msys-intl-8.dll", dependencies[0]);
+            Assert.AreEqual("msys-2.0.dll", dependencies[1]);
+            Assert.AreEqual("KERNEL32.dll", dependencies[2]);
+        }
+
+        [Test]
+        public void TestReadDependenciesLinux()
+        {
+            var driverOptions = new DriverOptions();
+            driverOptions.addLibraryDirs(GeneratorTest.GetTestsDirectory("Native"));
+            driverOptions.Libraries.Add("ls-linux");
+            var driver = new Driver(driverOptions, new TextDiagnosticPrinter());
+            Assert.IsTrue(driver.ParseLibraries());
+            var dependencies = driver.Symbols.Libraries[0].Dependencies;
+            Assert.AreEqual("libselinux.so.1", dependencies[0]);
+            Assert.AreEqual("librt.so.1", dependencies[1]);
+            Assert.AreEqual("libacl.so.1", dependencies[2]);
+            Assert.AreEqual("libc.so.6", dependencies[3]);
+        }
+
+        [Test]
+        public void TestReadDependenciesOSX()
+        {
+            var driverOptions = new DriverOptions();
+            driverOptions.addLibraryDirs(GeneratorTest.GetTestsDirectory("Native"));
+            driverOptions.Libraries.Add("ls-osx");
+            var driver = new Driver(driverOptions, new TextDiagnosticPrinter());
+            Assert.IsTrue(driver.ParseLibraries());
+            var dependencies = driver.Symbols.Libraries[0].Dependencies;
+            Assert.AreEqual("libutil.dylib", dependencies[0]);
+            Assert.AreEqual("libncurses.5.4.dylib", dependencies[1]);
+            Assert.AreEqual("libSystem.B.dylib", dependencies[2]);
+        }
+    }
+}