Including standard packages in C++ Static library

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1

Dear members,

How can I include “map” and “string” into C++ static library?

Br

2

I am using gcc V 6.3.0 and I have included all the necessary directories for map

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I have also included the headres of map and string

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but why I am still getting the following errors?

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the tool tip was showing namespace for map as __debug

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I tried using that as well

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then the error changes to

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please help me to figure this out.

Thnaks and regards
Ashamdeep Singh Saini

3

Hi @ashamdeep.saini ,

I am usually not using C++ nor doing static libs but I made your example work for me here partially. (Please note that next time posting a minimal working/non-working example code either as text or as file would help people to try to fix code instead of rewrite it from scratch :slight_smile: )

  1. Generally speaking, do not touch the automatically inserted header with it’s includes - all of your custom code follows below that
  2. You don’t need to / should not add any AS include files in the “Additional include directories” section - in my example I didn’t touch that at all, and it works

The sections in the help I used for reference:
https://help.br-automation.com/#/en/4/libraries%2Flibraries%2Fprogrammingmodel_libraries_static.html
https://help.br-automation.com/#/en/4/programming%2Fprograms%2Fansic%2Fprogrammingmodel_programs_ansicpp_specific.html

Code:


#include <bur/plctypes.h>
#ifdef __cplusplus
	extern "C"
	{
#endif
	#include "Library.h"
#ifdef __cplusplus
	};
#endif

#include <map>
#include <string>

unsigned long bur_heap_size = 0xFFFFF;

using namespace std;

/* TODO: Add your comment here */
void Encode(struct Encode* inst)
{
	/*TODO: Add your code here*/
	map<string, int> enMp;
	enMp["(sp)"] = 32;
}

Attached please find a full project export:
cpptest.zip (76.4 KB)

The only tests I did was compile testing, I did not call the function anywhere or test any more than that, but I think it does the job

Best regards
Michael

4

Dear Michael,

Thanks a lot.
Sorry about not posting the entire code it wasn’t cooked properly. but will do next time.

so silly of me :man_facepalming:, I was using extention “.c” instead of “.Cpp”.
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by default we get only option of ANSI C not for Cpp
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further when I tried to call the function block into the program (using the same project that you have sent)
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following flood of errors appeared.

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is it compiler related issue? and how to fix this?

Thanks and regards

5

Hi,

the answer to your current issue can also be found in the help (same chapter as linked already)
https://help.br-automation.com/#/en/6/libraries%2Flibraries%2Fprogrammingmodel_libraries_static.html

Quote:
Statically bound ANSI C/C++ libraries are defined as such solely by the absence of any IEC declaration files.
ANSI C++ libraries can be used exclusively from C++ programs.

Once you follow that, it compiles just fine.
Note that the bur_heap_size variable may only be defined in either the lib or the task(I kept it in the lib). Inserting a C++ Task already inserts the line, resulting in a compiler error in that regard. Delete the line - Done

Best regards

6

Thanks Michael,

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I should have read this earlier.