CODEWITHSUNDEEP
c++c++11c++98
Xu Hui
Xu Hui

Reputation: 1265

Strategy of converting code from C++11 to C++98?

I have a project written in C++11. As C++11 is widely accepted, the project works well up to now, until I have to run it in a environment which not support C++11.

I have already used std::shared_ptr, auto, std::intializer_list, nullptr enum class,chrono, std::vector<int> x{1,2,3,4} and many other C++11 technique everywhere in the project.

How can I move the big project in C++11 to C++98?

I apologize if it is a stupid problem, Thanks for your time.

Upvotes: 2

Views: 694

Answers (4)

user11422223
user11422223

Reputation:

One solution is to try looking for C++ external libraries such as Boost and Qt, which could cover half of your requisites.

However some things are implementation-specific and upto you, such as the auto keyword, which you may choose to not use. (In fact if your using a proper debugger cum IDE, you'll get to check even complex data types in an instance)

Another alternative to that is replacing auto by templates, as pointed out here. (without boost)

Similarly, stuff like macros and variadic templates shouldn't be hard to cover.

Upvotes: 1

Maciej Krzyszton
Maciej Krzyszton

Reputation: 21

I had to do something similar, but my challenge was co convert it from C++17 to C which was present on customer CentOS 7 (they used custom CentOS Image, and we were not allowed to install any new packages).

What I did was to throw out step by step all dependencies which used C++ elements and replace them with C variants. It took some time but it worked. Also looked after some other solution, but I was not able to find any.

You could always rewrite shared pointer, vector etc. in C.

Upvotes: 2

Che Huu
Che Huu

Reputation: 163

Maybe not exactly what you ask but when I want to run code to another computer without support C++11 I will create docker with C++11 inside this computer. Hope this helps!

Upvotes: 1

Alex Guteniev
Alex Guteniev

Reputation: 13679

Decide about each piece separately.

If that platform can run at least a subset of boost, you can probably just replace std::chrono and std::shared_ptr. You can also replace lambdas with BOOST_LOCAL_FUNCTION

Upvotes: 2

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