在 Windows 上使用 Veins 和 OMNET++ 配置 RInside

Question

我一直在尝试使用 Veins 和 OMNET++ 配置 RInside，但发现了一些问题。

经过Is it possible to use RInside in omnet++/Veins project to benefit from rich R features和How to set up Eclipse + StatET + Rcpp on Windows的讨论后，我在omnet++中新建了一个项目（共享类型），并尝试配置RInside。我遇到了一些错误 ("undefined reference to RInside::operator[]", "undefined reference to RInside::parseEvalQ").

我知道这是一个链接错误。我对 C++ 配置和基于 Eclipse 的 IDE 相当陌生，因此很难找出问题所在。我还附上了配置的屏幕截图。如果有人可以提供帮助，我将不胜感激。

更新（在成功构建 RInside 并确保工具链正确之后）

这是makefrag文件

#
# on windows we have to link with the ws2_32 (winsock2) library as it is no longer added to the omnetpp system libraries by default (as of OMNeT++ 5.1)
# copied from INET Framework (inet-3.6.0) makefrag
#
ifeq ($(PLATFORM),win32.x86_64)
  LIBS += -lws2_32
  DEFINES += -DINET_EXPORT
  ENABLE_AUTO_IMPORT=-Wl,--enable-auto-import
  LDFLAGS := $(filter-out $(ENABLE_AUTO_IMPORT), $(LDFLAGS))

  R_HOME := $(shell R RHOME | sed -e "s|\\\\|\/|g")
  R_ARCH := --arch $(shell echo 'cat(.Platform$$r_arch)' | R --vanilla --slave)
  sources := $(wildcard *.cpp)
  programs := $(sources:.cpp=)

  ## include headers and libraries for R
  RCPPFLAGS := $(shell $(R_HOME)/bin/R $(R_ARCH) CMD config --cppflags)
  RLDFLAGS := $(shell $(R_HOME)/bin/R $(R_ARCH) CMD config --ldflags)
  RBLAS := $(shell $(R_HOME)/bin/R $(R_ARCH) CMD config BLAS_LIBS)
  RLAPACK := $(shell $(R_HOME)/bin/R $(R_ARCH) CMD config LAPACK_LIBS)


  ## include headers and libraries for Rcpp interface classes
  RCPPINCL := $(shell echo 'Rcpp:::CxxFlags()' | $(R_HOME)/bin/R $(R_ARCH) --vanilla --slave)
  RCPPLIBS := $(shell echo 'Rcpp:::LdFlags()'  | $(R_HOME)/bin/R $(R_ARCH) --vanilla --slave)


  ## include headers and libraries for RInside embedding classes
  RINSIDEINCL := $(shell echo 'RInside:::CxxFlags()' | $(R_HOME)/bin/R $(R_ARCH) --vanilla --slave)
  RINSIDELIBS := $(shell echo 'RInside:::LdFlags()'  | $(R_HOME)/bin/R $(R_ARCH) --vanilla --slave)

  #DEFINES += $(RCPPFLAGS) $(RCPPINCL) $(RINSIDEINCL) $(shell $(R_HOME)/bin/R CMD config CPPFLAGS) $(shell $(R_HOME)/bin/R CMD config CXXFLAGS)
  #LIBS += $(RLDFLAGS) $(RRPATH) $(RBLAS) $(RLAPACK) $(RCPPLIBS) $(RINSIDELIBS)

endif

Answer 1

我快速尝试了集成 RInside 和 Veins（版本 5 alpha 1），可以报告成功。

我通过运行 R 并执行 install.packages('RInside') 来安装 RInside。

然后我将以下几行（主要从 RInside 示例 GNUMakefile 复制）修改为 Veins src/makefrag 文件：

# determine flags for RInside
R_HOME := $(shell R RHOME)
RCPPFLAGS := $(shell $(R_HOME)/bin/R CMD config --cppflags)
RLDFLAGS := $(shell $(R_HOME)/bin/R CMD config --ldflags)
RBLAS := $(shell $(R_HOME)/bin/R CMD config BLAS_LIBS)
RLAPACK := $(shell $(R_HOME)/bin/R CMD config LAPACK_LIBS)
RCPPINCL := $(shell echo 'Rcpp:::CxxFlags()' | $(R_HOME)/bin/R --vanilla --slave)
RCPPLIBS := $(shell echo 'Rcpp:::LdFlags()'  | $(R_HOME)/bin/R --vanilla --slave)
RINSIDEINCL := $(shell echo 'RInside:::CxxFlags()' | $(R_HOME)/bin/R --vanilla --slave)
RINSIDELIBS := $(shell echo 'RInside:::LdFlags()'  | $(R_HOME)/bin/R --vanilla --slave)

# feed to opp_makemake
DEFINES += $(RCPPFLAGS) $(RCPPINCL) $(RINSIDEINCL) $(shell $(R_HOME)/bin/R CMD config CPPFLAGS) $(shell $(R_HOME)/bin/R CMD config CXXFLAGS)
LIBS += $(RLDFLAGS) $(RRPATH) $(RBLAS) $(RLAPACK) $(RCPPLIBS) $(RINSIDELIBS)

之后，我可以在 Veins 中使用 R。我通过将代码从 RInside rinside_sample0.cpp 复制到 Veins BaseConnectionManager.cc 来尝试此操作，如下所示：

diff --git a/src/veins/base/connectionManager/BaseConnectionManager.cc b/src/veins/base/connectionManager/BaseConnectionManager.cc
index 879e90d244..8e9eba10e8 100644
--- a/src/veins/base/connectionManager/BaseConnectionManager.cc
+++ b/src/veins/base/connectionManager/BaseConnectionManager.cc
@@ -1,3 +1,5 @@
+#include <RInside.h>
+
 #include "veins/base/connectionManager/BaseConnectionManager.h"

 #include "veins/base/connectionManager/NicEntryDebug.h"
@@ -42,6 +44,12 @@ void BaseConnectionManager::initialize(int stage)
     // BaseModule::initialize(stage);

     if (stage == 0) {
+
+        // Hello R!
+        RInside R;
+        R["txt"] = "Hello, world!\n";
+        R.parseEvalQ("cat(txt)");
+
         drawMIR = hasPar("drawMaxIntfDist") ? par("drawMaxIntfDist").boolValue() : false;

         EV_TRACE << "initializing BaseConnectionManager\n";

编译 Veins（./configure 后跟 make）并运行教程示例（cd examples/veins 后跟 ./run -u Cmdenv）产生了所需的输出：

OMNeT++ Discrete Event Simulation  (C) 1992-2018 Andras Varga, OpenSim Ltd.
Version: 5.4.1, build: 180629-5e28390, edition: Academic Public License -- NOT FOR COMMERCIAL USE
See the license for distribution terms and warranty disclaimer

Setting up Cmdenv...

Loading NED files from ../../src/veins:  41
Loading NED files from .:  1
Loading NED files from /Users/sommer/src/veins/examples/veins:  1

Preparing for running configuration General, run #0...
Assigned runID=General-0-20190308-18:16:24-23603
Setting up network "RSUExampleScenario"...
Initializing...
Hello, world!

Running simulation...

（注意模拟初始化期间的Hello, world! 输出。）

在 Windows 上构建可能意味着从 RInside 示例 Makefile.win 文件中复制行。