1 files changed, 49 insertions, 0 deletions
diff --git a/LibGit2Sharp/Core/NativeMethods.cs b/LibGit2Sharp/Core/NativeMethods.cs
index 6b1accb2..9b2f9215 100644
--- a/LibGit2Sharp/Core/NativeMethods.cs
+++ b/LibGit2Sharp/Core/NativeMethods.cs
@@ -577,6 +577,55 @@ namespace LibGit2Sharp.Core
             GitObjectSafeHandle two);
 
         [DllImport(libgit2)]
+        internal static extern int git_merge_head_from_ref(
+            out GitMergeHeadHandle mergehead,
+            RepositorySafeHandle repo,
+            ReferenceSafeHandle reference);
+
+        [DllImport(libgit2)]
+        internal static extern int git_merge_head_from_fetchhead(
+            out GitMergeHeadHandle mergehead,
+            RepositorySafeHandle repo,
+            [MarshalAs(UnmanagedType.CustomMarshaler, MarshalCookie = UniqueId.UniqueIdentifier, MarshalTypeRef = typeof(StrictUtf8Marshaler))] string branch_name,
+            [MarshalAs(UnmanagedType.CustomMarshaler, MarshalCookie = UniqueId.UniqueIdentifier, MarshalTypeRef = typeof(StrictUtf8Marshaler))] string remote_url,
+            ref GitOid oid);
+
+        [DllImport(libgit2)]
+        internal static extern int git_merge_head_from_oid(
+            out GitMergeHeadHandle mergehead,
+            RepositorySafeHandle repo,
+            ref GitOid oid);
+
+        [DllImport(libgit2)]
+        internal static extern int git_merge(
+            out GitMergeResultHandle mergeResult,
+            RepositorySafeHandle repo,
+            [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)] [In] IntPtr[] their_heads,
+            UIntPtr their_heads_len,
+            ref GitMergeOpts given_opts);
+
+        [DllImport(libgit2)]
+        internal static extern int git_merge_result_is_uptodate(
+            GitMergeResultHandle merge_result);
+
+        [DllImport(libgit2)]
+        internal static extern int git_merge_result_is_fastforward(
+            GitMergeResultHandle merge_result);
+
+        [DllImport(libgit2)]
+        internal static extern int git_merge_result_fastforward_oid(
+            out GitOid oid,
+            GitMergeResultHandle merge_result);
+
+        [DllImport(libgit2)]
+        internal static extern void git_merge_result_free(
+            IntPtr merge_result);
+
+        [DllImport(libgit2)]
+        internal static extern void git_merge_head_free(
+            IntPtr merge_head);
+
+        [DllImport(libgit2)]
         internal static extern int git_message_prettify(
             byte[] message_out, // NB: This is more properly a StringBuilder, but it's UTF8
             UIntPtr buffer_size,