example: Add shard libraries

examples/evpn_router/vendor/README.md

@@ -0,0 +1,5 @@
+Notes on Third Party Software Packages
+======================================
+
+Software packages found in this directory are not part of this example. Each software
+packages is distributed under the terms and conditions described in the package.

examples/evpn_router/vendor/libgobgp.h

@@ -0,0 +1,96 @@
+/* Code generated by cmd/cgo; DO NOT EDIT. */
+
+/* package command-line-arguments */
+
+
+#line 1 "cgo-builtin-prolog"
+
+#include <stddef.h> /* for ptrdiff_t below */
+
+#ifndef GO_CGO_EXPORT_PROLOGUE_H
+#define GO_CGO_EXPORT_PROLOGUE_H
+
+typedef struct { const char *p; ptrdiff_t n; } _GoString_;
+
+#endif
+
+/* Start of preamble from import "C" comments.  */
+
+
+#line 18 "path.go"
+ typedef struct {
+     char *value;
+     int len;
+ } buf;
+
+ typedef struct path_t {
+     buf   nlri;
+     buf** path_attributes;
+     int   path_attributes_len;
+     int   path_attributes_cap;
+ } path;
+ extern path* new_path();
+ extern void free_path(path*);
+ extern int append_path_attribute(path*, int, char*);
+ extern buf* get_path_attribute(path*, int);
+
+#line 1 "cgo-generated-wrapper"
+
+
+/* End of preamble from import "C" comments.  */
+
+
+/* Start of boilerplate cgo prologue.  */
+#line 1 "cgo-gcc-export-header-prolog"
+
+#ifndef GO_CGO_PROLOGUE_H
+#define GO_CGO_PROLOGUE_H
+
+typedef signed char GoInt8;
+typedef unsigned char GoUint8;
+typedef short GoInt16;
+typedef unsigned short GoUint16;
+typedef int GoInt32;
+typedef unsigned int GoUint32;
+typedef long long GoInt64;
+typedef unsigned long long GoUint64;
+typedef GoInt64 GoInt;
+typedef GoUint64 GoUint;
+typedef __SIZE_TYPE__ GoUintptr;
+typedef float GoFloat32;
+typedef double GoFloat64;
+typedef float _Complex GoComplex64;
+typedef double _Complex GoComplex128;
+
+/*
+  static assertion to make sure the file is being used on architecture
+  at least with matching size of GoInt.
+*/
+typedef char _check_for_64_bit_pointer_matching_GoInt[sizeof(void*)==64/8 ? 1:-1];
+
+typedef _GoString_ GoString;
+typedef void *GoMap;
+typedef void *GoChan;
+typedef struct { void *t; void *v; } GoInterface;
+typedef struct { void *data; GoInt len; GoInt cap; } GoSlice;
+
+#endif
+
+/* End of boilerplate cgo prologue.  */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+extern int get_route_family(char* p0);
+
+extern path* serialize_path(int p0, char* p1);
+
+extern char* decode_path(path* p0);
+
+extern char* decode_capabilities(buf* p0);
+
+#ifdef __cplusplus
+}
+#endif