Hi everyone,
I have been attempting to build a very simple R package interfacing with
some very simple C++ code. Everything I try though results in the
function working but on return it produces a memory error. Here is the
output:
***********OUTPUT***************************
> library(MyPackage)
> hello();
*** caught segfault ***
address 0x3, cause 'memory not mapped'
**********END OUTPUT*************************
I have read that some time this occurs because it cannot find the function
in the shared library but I have tested this theory with a simple text
message and this is displayed but again the memory error occurs.
The C++ code has been reduced to the simplest possible:
*** helloworld.h
extern "C" void helloworld(void);
*** helloworld.cpp
#include <iostream>
#include "helloworld.h"
void helloworld(void) {
// This was my test line that was displayed as described above.
// std::cout << "My first R Package Test." << std::endl;
}
I also wrote an R wrapper called hello as follows:
*** helloworld.R
hello <- function()
{
.Call("helloworld", PACKAGE="MyPackage");
}
The namespaces file (NAMESPACE) is as follows:
useDynLib(MyPackage)
export(hello)
I have compared mine against other package sources available that do the
same thing and cannot find the key difference.
Thank you for your help in advance,
Tom
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