• Ragmaanir (11/11) Nov 20 2015 Hi,
• Timo Sintonen (10/22) Nov 21 2015 You can not use D without the runtime library.
• David Nadlinger (4/10) Nov 21 2015 Try adding "pragma (LDC_no_moduleinfo);" to the modules that you
• David Nadlinger (10/12) Nov 21 2015 I should add that this will only help with the _d_dso_registry
• Kagamin (5/6) Nov 21 2015 What simple can be done in your case:
• Kagamin (5/5) Nov 21 2015 To clarify: the difference between structs and classes in D is
• Ragmaanir (8/8) Nov 23 2015 @Timo Sintonen, @David Nadlinger, @Kagamin

Ragmaanir <invalid example.com> writes:

Hi,

i want to compile D-code for an experimental OS.

But when i run the build script i get several compilation/linkage 
errors:

https://gist.github.com/Ragmaanir/17a6b49ad6c1725aafa1

It looks like this is some d-internal stuff. What can i do to fix 
this? I have written some of my experiments in c++ previously and 
that works, but i want to port it to D because i think i will be 
more productive and less annoyed by the syntax. But this problem 
blocks me from doing so and i'm not sure about how to fix that.

Thanks!

Timo Sintonen <t.sintonen luukku.com> writes:

On Friday, 20 November 2015 at 21:54:12 UTC, Ragmaanir wrote:
 Hi,

 i want to compile D-code for an experimental OS.

 But when i run the build script i get several 
 compilation/linkage errors:

 https://gist.github.com/Ragmaanir/17a6b49ad6c1725aafa1

 It looks like this is some d-internal stuff. What can i do to 
 fix this? I have written some of my experiments in c++ 
 previously and that works, but i want to port it to D because i 
 think i will be more productive and less annoyed by the syntax. 
 But this problem blocks me from doing so and i'm not sure about 
 how to fix that.

 Thanks!

You can not use D without the runtime library.

You can make an empty library and add required functions. Look at 
Mikes examples at https://github.com/jinshil. With this you can 
write C like programs but you can not for example have any oo 
related things like classes.

To use more D features you need a modified runtime, something 
like mine at https://bitbucket.org/timosi/minlibd.

These projects are both for Arm microcontrollers and gdc but you 
get the idea.

David Nadlinger <code klickverbot.at> writes:

On Friday, 20 November 2015 at 21:54:12 UTC, Ragmaanir wrote:
 It looks like this is some d-internal stuff. What can i do to 
 fix this? I have written some of my experiments in c++ 
 previously and that works, but i want to port it to D because i 
 think i will be more productive and less annoyed by the syntax. 
 But this problem blocks me from doing so and i'm not sure about 
 how to fix that.

Try adding "pragma (LDC_no_moduleinfo);" to the modules that you 
want to use without a runtime.

  — David

David Nadlinger <code klickverbot.at> writes:

On Saturday, 21 November 2015 at 12:27:22 UTC, David Nadlinger 
wrote:
 Try adding "pragma (LDC_no_moduleinfo);" to the modules that 
 you want to use without a runtime.

I should add that this will only help with the _d_dso_registry 
calls, but not the TypeInfo references.

We'd be happy to accept patches that add a command line flag or 
similar to disable all the druntime dependencies. There is no 
technical reason for not doing so (although you won't be able to 
use exceptions, garbage collection, etc.) – it's a simple case of 
the current contributors not getting around to doing so yet.

  — David

Kagamin <spam here.lot> writes:

On Friday, 20 November 2015 at 21:54:12 UTC, Ragmaanir wrote:
 https://gist.github.com/Ragmaanir/17a6b49ad6c1725aafa1

What simple can be done in your case:
1. stub _d_dso_registry
2. implement _d_assert_msg, it's useful even if it's just halts
3. don't use classes if possible, it's just easier without them

Kagamin <spam here.lot> writes:

To clarify: the difference between structs and classes in D is 
that structs can't inherit and can't have virtual methods, looks 
like you don't use polymorphism in your C++ code, so just declare 
the types as structs. BTW your String layout matches that of D 
string except that D uses size_t for string length :)

Ragmaanir <invalid example.com> writes:

 Timo Sintonen,  David Nadlinger,  Kagamin

Thank you for your comments!

I guess i will stick with C++(11/14) then for now. I dont have 
enough time/knowledge in order to submit any patches to D in this 
area. Maybe i will give D a try later, i think it has several 
very useful features that i will probably miss in C++ ^^ But for 
now i guess it is easier for me to just stick with C++.

Thanks!