Solved

I cannot build a eclipse C++ project as teh main function is in c file

Posted on 2013-05-14
8
475 Views
Last Modified: 2013-07-08
I have 5 files in my eclipse c++ proj:
A.h , A.cpp , B.h,  B.cpp  and main.c

Build it is building  c instead of C++..
So  I get this error:
/A.h:15: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘A’
In file included from ../main.c:1:
../B.h:13: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘B’

What settings would I have to change in eclipse for this ? I tried to change the make manually  file but it does not help.
0
Comment
Question by:pvinodp
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
8 Comments
 
LVL 32

Expert Comment

by:phoffric
ID: 39165836
Does changing main.c to main.cpp help (and fixing any C++ issues that may arise)?
0
 

Author Comment

by:pvinodp
ID: 39167175
yes that works.. but there should be some option eclipse..
I want to know that configuration.
0
 
LVL 32

Expert Comment

by:phoffric
ID: 39167820
It may help to know your OS, Eclipse version, and C/C++ compiler Eclipse is using.
It may help if you post the simplest example of your 5 files.

Are you able to build outside of Eclipse the mixed C/C++ project from a command line without problems?
0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 

Author Comment

by:pvinodp
ID: 39170575
I am running it on centos 5.5
eclipse version : Eclipse IDE for C/C++ Developers
                           Version: Helios Release
I did not try to build outside eclispe.

I have 5 simple files: ClassA containing a constructor and destructor and printA() function.
Same with ClassB .
And a main.c file which creates teh obj of the two classes and calls teh function printA() respectively.
0
 
LVL 32

Accepted Solution

by:
phoffric earned 500 total points
ID: 39173675
Since changing .c to .cpp allows you to run properly, the problem may be in your code and not in Eclipse. You didn't mention what compilers (for both C and C++) you are using. (I'll take a WAG - gnu.) Try to compile the .c and .cpp files outside of Eclipse and see whether you are getting errors.

>> a main.c file which creates teh obj of the two classes
Not sure how you are doing this since C language doesn't know about C++ classes. Mixing C and C++ can be done. Are you following the directions in this link?
    http://www.parashift.com/c++-faq/mixing-c-and-cpp.html
0
 

Author Comment

by:pvinodp
ID: 39173782
I am not aware how eclipse is building the code internally.
I run eclipse on a centos system and the eclipse version is Helios Release.

I usually have all files in .cpp and everything was fine. But in this project there is a combination of c and c++  files. ANd the main function is in a c file. THats is what is causig the problem.
0
 
LVL 32

Expert Comment

by:phoffric
ID: 39176553
>> the eclipse version is Helios Release
Yep, you said that earlier. I will guess that you are using gnu compiler/linker.
FYI - Eclipse does not come with a compiler.

>> ANd the main function is in a c file. THats is what is causig the problem.
Yep, you said that earlier.

Not sure how you are doing this since C language doesn't know about C++ classes. Mixing C and C++ can be done. Are you following the directions in this link?
    http://www.parashift.com/c++-faq/mixing-c-and-cpp.html
0
 

Author Closing Comment

by:pvinodp
ID: 39306466
Thanks
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
Container Orchestration platforms empower organizations to scale their apps at an exceptional rate. This is the reason numerous innovation-driven companies are moving apps to an appropriated datacenter wide platform that empowers them to scale at a …
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.

626 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question