Added reading of dependencies of ELF libraries.

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

src/CppParser/Parser.cpp

@@ -3015,6 +3015,14 @@ ParserResultKind Parser::ParseArchive(llvm::StringRef File,
     return ParserResultKind::Success;
 }
 
+template<class ELFT>
+void ReadELFDependencies(const llvm::object::ELFFile<ELFT>* ELFFile, CppSharp::CppParser::NativeLibrary*& NativeLib)
+{
+    for (const auto &Entry : ELFFile->dynamic_table())
+        if (Entry.d_tag == llvm::ELF::DT_NEEDED)
+            NativeLib->Dependencies.push_back(ELFFile->getDynamicString(Entry.d_un.d_val));
+}
+
 ParserResultKind Parser::ParseSharedLib(llvm::StringRef File,
                                         llvm::object::ObjectFile* ObjectFile,
                                         CppSharp::CppParser::NativeLibrary*& NativeLib)
@@ -3038,6 +3046,22 @@ ParserResultKind Parser::ParseSharedLib(llvm::StringRef File,
             if (!Sym.empty())
                 NativeLib->Symbols.push_back(Sym);
         }
+        if (auto ELFObjectFile = llvm::dyn_cast<llvm::object::ELF32LEObjectFile>(ObjectFile))
+        {
+            ReadELFDependencies(ELFObjectFile->getELFFile(), NativeLib);
+        }
+        else if (auto ELFObjectFile = llvm::dyn_cast<llvm::object::ELF32BEObjectFile>(ObjectFile))
+        {
+            ReadELFDependencies(ELFObjectFile->getELFFile(), NativeLib);
+        }
+        else if (auto ELFObjectFile = llvm::dyn_cast<llvm::object::ELF64LEObjectFile>(ObjectFile))
+        {
+            ReadELFDependencies(ELFObjectFile->getELFFile(), NativeLib);
+        }
+        else if (auto ELFObjectFile = llvm::dyn_cast<llvm::object::ELF64BEObjectFile>(ObjectFile))
+        {
+            ReadELFDependencies(ELFObjectFile->getELFFile(), NativeLib);
+        }
     }
     else
     {

src/Generator.Tests/ParseELFTest.cs

@@ -0,0 +1,24 @@
+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]);
+        }
+    }
+}