deploy: be717ce5f3a72ff270e9ffe87add9356c8ec5a1e

.gitignore

@@ -34,5 +34,3 @@ rln
 package-lock.json
 node_modules/
 /.update.timestamp
-
-libwaku

Makefile

@@ -29,6 +29,8 @@ DOCKER_IMAGE_NIM_PARAMS ?= -d:chronicles_colors:none -d:insecure
 	bridge \
 	test \
 	clean \
+	libwaku.so \
+	wrappers \
 	libbacktrace
 
 ifeq ($(NIM_PARAMS),)
@@ -128,7 +130,7 @@ rlnlib:
 ifeq ($(RLN), true)
 	cargo build --manifest-path vendor/rln/Cargo.toml
 endif
-	
+
 test2: | build deps installganache
 	echo -e $(BUILD_MSG) "build/$@" && \
 		$(ENV_SCRIPT) nim test2 $(NIM_PARAMS) waku.nims
@@ -185,3 +187,17 @@ ifneq ($(USE_LIBBACKTRACE), 0)
 endif
 
 endif # "variables.mk" was not included
+
+libwaku.so: | build deps
+	echo -e $(BUILD_MSG) "build/$@" && \
+		$(ENV_SCRIPT) nim c --app:lib --noMain --nimcache:nimcache/libwaku $(NIM_PARAMS) -o:build/$@.0 wrappers/libwaku.nim && \
+		rm -f build/$@ && \
+		ln -s $@.0 build/$@
+
+# libraries for dynamic linking of non-Nim objects
+EXTRA_LIBS_DYNAMIC := -L"$(CURDIR)/build" -lwaku -lm
+wrappers: | build deps libwaku.so
+	echo -e $(BUILD_MSG) "build/C_wrapper_example" && \
+		 $(CC) wrappers/wrapper_example.c -Wl,-rpath,'$$ORIGIN' $(EXTRA_LIBS_DYNAMIC) -g -o build/C_wrapper_example
+	echo -e $(BUILD_MSG) "build/go_wrapper_example" && \
+		go build -ldflags "-linkmode external -extldflags '$(EXTRA_LIBS_DYNAMIC)'" -o build/go_wrapper_example wrappers/wrapper_example.go #wrappers/cfuncs.go

vendor/nim-libbacktrace/vendor/libbacktrace-upstream/libtool

@@ -2,7 +2,7 @@
 
 # libtool - Provide generalized library-building support services.
 # Generated automatically by config.status (libbacktrace) version-unused
-# Libtool was configured on host fv-az190-125:
+# Libtool was configured on host fv-az129-187:
 # NOTE: Changes made to this file will be lost: look at ltmain.sh.
 #
 #   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,

wrappers/README.md

@@ -0,0 +1,9 @@
+# libwaku
+
+Exposes a C API that can be used by other environments other than C.
+
+## Running
+
+```
+make wrappers
+```

wrappers/libwaku.h

@@ -0,0 +1,14 @@
+#ifndef __LIBWAKU_H__
+#define __LIBWAKU_H__
+
+#include <stdint.h>
+#include <stddef.h>
+
+// Initialize Nim
+void NimMain();
+
+char* info(const char* wakuNode);
+
+void echo();
+
+#endif //__LIBWAKU_H__

wrappers/libwaku.nim

@@ -0,0 +1,38 @@
+# libwaku
+#
+# Exposes a C API that can be used by other environment than C.
+
+# TODO Start a node
+# TODO Mock info call
+# TODO Write header file
+# TODO Write example C code file
+# TODO Wrap info call
+# TODO Init a node
+
+# proc info*(node: WakuNode): WakuInfo =
+proc info(foo: cstring): cstring {.exportc, dynlib.} =
+  echo "info about node"
+  echo foo
+  return foo
+
+proc echo() {.exportc.} =
+ echo "echo"
+
+# TODO Here at the moment, start the node
+# Then do info call
+# WIP
+#proc main() {.async.} =
+#  let
+#    rng = crypto.newRng()
+#    conf = WakuNodeConf.load()
+#    (extIp, extTcpPort, extUdpPort) = setupNat(conf.nat, clientId,
+#      Port(uint16(conf.tcpPort) + conf.portsShift),
+#      Port(uint16(conf.udpPort) + conf.portsShift))
+#    node = WakuNode.init(conf.nodeKey, conf.listenAddress,
+#      Port(uint16(conf.tcpPort) + conf.portsShift), extIp, extTcpPort)
+#
+#  await node.start()
+#
+#main()
+
+  # When main done stuff

wrappers/wrapper_example.c

@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <stddef.h>
+
+#include "libwaku.h"
+
+void NimMain();
+
+int main(int argc, char* argv[]) {
+  char* string;
+  NimMain();
+  //echo();
+  string = info("hello there");
+  printf("Info: %s", string);
+}

wrappers/wrapper_example.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"fmt"
+	"runtime"
+)
+
+/*
+#include <stdlib.h>
+
+// Passing "-lwaku" to the Go linker through "-extldflags" is not enough. We need it in here, for some reason.
+#cgo LDFLAGS: -Wl,-rpath,'$ORIGIN' -L${SRCDIR}/../build -lwaku
+#include "libwaku.h"
+
+*/
+import "C"
+
+// Arrange that main.main runs on main thread.
+func init() {
+	runtime.LockOSThread()
+}
+
+func Start() {
+	C.NimMain()
+
+	messageC := C.CString("Calling info")
+	fmt.Println("Start nim-waku")
+	var str = C.info(messageC)
+	fmt.Println("Info", str)
+}
+
+func main() {
+	fmt.Println("Hi main")
+	Start()
+}