HI Ben,
The most likely cause is that your installation of ROOT has not built the cintdlls.
In the KCC build, std::string interpreted support is built in. In all other cases the cintdlls need to be built and you need to type:
#include <string>
To check whether you have the dictionary for the string properly loaded you can do:
.files
this should list "string.dll". If you do no see "string.dll" (after doing #include <string>)
then you have no access (from the interpreter) to the compiled version of std::string and you
can NOT pass string to your compiled classes.
Note that in root 3.11.00 and above, support for std::string will be built-in on all platform
(with no need for #include <string>)
Cheers,
Philippe.
-----Original Message-----
From: owner-roottalk@pcroot.cern.ch [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Ben Kilminster
Sent: Wednesday, November 12, 2003 7:53 PM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] string in gcc
Hi,
At the ROOT prompt, I try to pass a string into an object. This works in my KCC compiled root on my linux PC, but does not work on my gcc 3.3 compiled root on my Mac. I went through a bunch of emails with similar questions on roottalk, but I didn't get anywhere. I believe this feature must be at the CINT level, since the classes do compile okay.
Here is the successful running on the kcc compiled root system:
root [0] .L test.cc++
Info in <TUnixSystem::ACLiC>: creating shared library /home/bjk/test2/./test_cc.so
root [1] test T
root [2] T.set("value")
offset is value
Here is what happens on the macosx version :
root [0] .L test.cc++
Info in <TUnixSystem::ACLiC>: creating shared library /Users/bjk/releases/4.11.1ana/test2/./test_cc.so
ld: warning -prebind has no effect with -bundle
root [1] test T
root [2] T.set("value")
Error: Can't call test::set("value") in current scope FILE:(tmpfile) LINE:1
Possible candidates are...
filename line:size busy function type and name (in test)
(compiled) 0:0 0 public: void set(string value);
Error: Symbol T is not defined in current scope FILE:(tmpfile) LINE:1
Error: Failed to evaluate T.set("value")Possible candidates are...
filename line:size busy function type and name
*** Interpreter error recovered ***
>From the threads on roottalk I have seen, I have tried a range of things to get this to work, such as :
root [0] #include <string>
root [1] using namespace std
root [2] string val = "value"
root [3] .L test.cc++
Info in <TUnixSystem::ACLiC>: creating shared library /Users/bjk/releases/4.11.1ana/test2/./test_cc.so
ld: warning -prebind has no effect with -bundle
root [4] test T
root [5] T.set(val)
Error: Can't call test::set(val) in current scope FILE:(tmpfile) LINE:1
Possible candidates are...
filename line:size busy function type and name (in test)
(compiled) 0:0 0 public: void set(string value);
Error: Symbol T is not defined in current scope FILE:(tmpfile) LINE:1
Error: Failed to evaluate T.set(val)Possible candidates are...
filename line:size busy function type and name
*** Interpreter error recovered ***
-------------------------------------------------------------------------------------------------
The code I am trying to execute is :
test.cc :
#include <iostream>
#include "test.hh"
using namespace std;
test::~test() {
}
test::test(){
}
test.hh :
#include <iostream.h>
class test {
public:
std::string Offset;
test();
~test();
inline void set(std::string value)
{Offset = value;
std::cout << "offset is " << value << std::endl; }
};
What am I doing wrong here ?
Thanks !
Ben
p.s. I am using root 3.10.1 compiled on my Mac osx 10.3 with gcc 3.3.
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