Add support for Visual Studio 2019

external/libelf/src/getarhdr.c

@@ -0,0 +1,37 @@
+/*
+getarhdr.c - implementation of the elf_getarhdr(3) function.
+Copyright (C) 1995 - 1998 Michael Riepe
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+*/
+
+#include <private.h>
+
+#ifndef lint
+static const char rcsid[] = "@(#) $Id: getarhdr.c,v 1.7 2008/05/23 08:15:34 michael Exp $";
+#endif /* lint */
+
+Elf_Arhdr*
+elf_getarhdr(Elf *elf) {
+    if (!elf) {
+	return NULL;
+    }
+    elf_assert(elf->e_magic == ELF_MAGIC);
+    if (elf->e_arhdr) {
+	return elf->e_arhdr;
+    }
+    seterr(ERROR_NOTARCHIVE);
+    return NULL;
+}