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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: I want to use the g++ template in the "C" gcc software
Date: Thu, 12 Dec 2024 13:58:22 -0800
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On 12/12/2024 7:17 AM, aotto1968 wrote:
> On 12.12.24 11:24, David Brown wrote:
>> On 12/12/2024 09:37, aotto1968 wrote:
>>> Hi,
>>>
>>> I create a C software and there is a requirement to use the g++ 
>>> template *in* the gcc.
>>> I do *not* want to use all the g++ "boilerplate" like special syntax, 
>>> classes etc
>>> I just want to use the template.
>>>
>>> goal:
>>>
>>> 1. I already use "inline" code to replace "cpp-macro-like" syntax in 
>>> the header.
>>> 2. NOW I *want* to replace a "cpp-macro" which use the *data-type* as 
>>> an argument with a template.
>>>
>>> question.
>>>
>>> 1. Is there a g++ switch to disable all the g++ features except of C 
>>> source and template feature ?
>>> 2. Is there a gcc switch to add g++-template feature into gcc ?
>>> 3. is there an external software to add the c++-template feature into 
>>> an existing C software ?
>>>
>>> thanks.
>>
>> It might help if you give an example of what you are trying to achieve 
>> - it doesn't have to be valid code that can be compiled.
>>
>> gcc has command-line options to disable some features of C and C++, 
>> but not like you are describing.  And C++ without classes is not the 
>> same as C anyway.  But you might find you can write your code in C++ 
>> and simply not use the features you don't want to use.
>>
>> If you are trying to make type-generic function-like "things" in C, 
>> then you have to use macros.  But you can use modern features of C11 
>> and C23 to make this safer and neater than in older C standards.  gcc 
>> also provides extensions that can help, if you are happy writing gcc- 
>> specific code.
>>
>> You should do your own googling for information, tutorials and 
>> examples here, but these links will give you some starting points:
>>
>> C11 _Generic selections:
>> <https://en.cppreference.com/w/c/language/generic>
>>
>> C23 "typeof" and "auto" type inference:
>> <https://en.cppreference.com/w/c/language/typeof>
>> <https://en.cppreference.com/w/c/language/auto>
>>
>> gcc extensions:
>> <https://gcc.gnu.org/onlinedocs/gcc/Statement-Exprs.html>
>> <https://gcc.gnu.org/onlinedocs/gcc/Typeof.html>
>>
> 
> Thanks for your links but I already know "feature" of gcc etc…
> 
> I still want to get better "macro" code use template like c++ has
> 
> example: (the 'cls' is a type and the `pBufferInit_T` create a type 
> specific "inline"
> -> this I want to replace with an template.[...]

ot, but some fun with macros:

https://github.com/rofl0r/chaos-pp

;^)