C++ error : Member declaration not found

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I have a windows c++ code i want to port on Linux

MyClass.h

C++

class MyClass
{
private:
	#ifdef WIN32
		CRITICAL_SECTION _mutex_obj_;
	#else
		pthread_mutex_t _mutex_obj_;
		pthread_mutexattr_t _mutex_obj__attr_;
	#endif
protected:

public:
	MyClass();
	virtual ~MyClass();

};

MyClass.cpp

C++

MyClass::MyClass()
{
	#ifdef WIN32
		InitializeCriticalSection(&_mutex_obj_);
	#else
		pthread_mutexattr_init(&_mutex_obj__attr_);
		pthread_mutex_init(&_mutex_obj_, &_mutex_obj__attr_);
		pthread_mutexattr_destroy(&_mutex_obj__attr_);
	#endif

}

MyClass::~MyClass()
{

}

when compiled i get this error Member declaration not found

Thanks in advanced

Posted 21-Sep-14 21:40pm

User 8950785

Updated 21-Sep-14 22:12pm

v2

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Comments

Sergey Alexandrovich Kryukov 22-Sep-14 3:52am

This message looks weird. In what line? And what's the point to have constructor and destructor doing nothing? (If this is just for showing a problem, it's perfectly fine.)
Are you saying you have the code compiling on Windows, but failing with GCC?
—SA

[no name] 22-Sep-14 4:05am

i did not add the rest of the code since the error only appear on MyClass::MyClass() , and yes the code run on windows but failing with GCC.

Sergey Alexandrovich Kryukov 22-Sep-14 4:08am

It would be fine, but it's hard to imagine that such simple code can cause such problem. So, are you sure that's it? You did not answer my question...
—SA

[no name] 22-Sep-14 4:14am

i updated the code.

Richard MacCutchan 22-Sep-14 4:51am

Which line does the error occur on, and what is the exact text of the message?

[no name] 22-Sep-14 5:46am

here is screenshot for the code with the error
http://imgur.com/qs4zQ3v

Richard MacCutchan 22-Sep-14 5:52am

That does not match what you have shown above. However, judging by the 184 errors, you have something fairly fundamental missing from your header file.

[no name] 22-Sep-14 6:27am

most of the errors because windows header files, so i'm working for the linux equivalent. but for the above error i change the path for header file and it seem to be working now. thank you @Richard ,@Sergey for you time =)

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CPallini · Answer 1 · 2014-09-21T23:14:00

This code:

C++

#ifndef WIN32
#include <pthread.h>
#endif

class MyClass
{
private:
  #ifdef WIN32
    CRITICAL_SECTION _mutex_obj_;
  #else
    pthread_mutex_t _mutex_obj_;
    pthread_mutexattr_t _mutex_obj__attr_;
  #endif
protected:

public:
  MyClass();
  virtual ~MyClass();

};

MyClass::MyClass()
{
  #ifdef WIN32
    InitializeCriticalSection(&_mutex_obj_);
  #else
    pthread_mutexattr_init(&_mutex_obj__attr_);
    pthread_mutex_init(&_mutex_obj_, &_mutex_obj__attr_);
    pthread_mutexattr_destroy(&_mutex_obj__attr_);
  #endif

}

MyClass::~MyClass()
{

}

int main()
{
  MyClass mc;
}

compiles (and runs) fine on my Ubuntu box (don't forget to link with pthread library).