• dangbinghoo (12/12) Apr 07 2022 hi,
• dangbinghoo (5/17) Apr 07 2022 PS: I need the program link Phobos statically, don't want to use
• dangbinghoo (3/9) Apr 08 2022 hi, please help with this, can we reduce the footprint?
• dangbinghoo (7/17) Apr 08 2022 OK, I just put on another git repo, which is the simpley
• dangbinghoo (6/25) Apr 08 2022 OK, talked in Discord.

dangbinghoo <dangbinghoo gmail.com> writes:

hi,

I just asked for help about this before, on that time, my 
solution is to remove whatever dub dependencies which are 
optional.

now, I'm re-examining the dlang program footprint size, and I put 
a github example repo here:

https://github.com/dangbinghoo/dlang_footprint_test.git

the example is simply a json ser/deser test depends on ASDF, on 
my machine it generates a binary about 914K using LDC2.

Note: as I'm focused on embedded system development, what I want 
help with is only for the situation using LDC compiler.

thanks!

dangbinghoo <dangbinghoo gmail.com> writes:

On Friday, 8 April 2022 at 03:20:29 UTC, dangbinghoo wrote:
 hi,

 I just asked for help about this before, on that time, my 
 solution is to remove whatever dub dependencies which are 
 optional.

 now, I'm re-examining the dlang program footprint size, and I 
 put a github example repo here:

 https://github.com/dangbinghoo/dlang_footprint_test.git

 the example is simply a json ser/deser test depends on ASDF, on 
 my machine it generates a binary about 914K using LDC2.

 Note: as I'm focused on embedded system development, what I 
 want help with is only for the situation using LDC compiler.

 thanks!

PS: I need the program link Phobos statically, don't want to use 
.so except the basic C library. so I added option 
`-link-defaultlib-shared=false` in dub.json by default, this 
should not be changed.

dangbinghoo <dangbinghoo gmail.com> writes:

On Friday, 8 April 2022 at 03:26:29 UTC, dangbinghoo wrote:
 On Friday, 8 April 2022 at 03:20:29 UTC, dangbinghoo wrote:
 [...]

 PS: I need the program link Phobos statically, don't want to 
 use .so except the basic C library. so I added option 
 `-link-defaultlib-shared=false` in dub.json by default, this 
 should not be changed.

hi, please help with this, can we reduce the footprint?

thanks!

dangbinghoo <dangbinghoo gmail.com> writes:

On Saturday, 9 April 2022 at 02:19:52 UTC, dangbinghoo wrote:
 On Friday, 8 April 2022 at 03:26:29 UTC, dangbinghoo wrote:
 On Friday, 8 April 2022 at 03:20:29 UTC, dangbinghoo wrote:
 [...]

 PS: I need the program link Phobos statically, don't want to 
 use .so except the basic C library. so I added option 
 `-link-defaultlib-shared=false` in dub.json by default, this 
 should not be changed.

 hi, please help with this, can we reduce the footprint?

 thanks!

OK, I just put on another git repo, which is the simpley 
helloworld in D, and it
generates 849KB for print a single line!

https://github.com/dangbinghoo/hello_world_d

so, maybe there's something wrong with D compiling?


thanks!

dangbinghoo <dangbinghoo gmail.com> writes:

On Saturday, 9 April 2022 at 02:56:50 UTC, dangbinghoo wrote:
 On Saturday, 9 April 2022 at 02:19:52 UTC, dangbinghoo wrote:
 On Friday, 8 April 2022 at 03:26:29 UTC, dangbinghoo wrote:
 On Friday, 8 April 2022 at 03:20:29 UTC, dangbinghoo wrote:
 [...]

 PS: I need the program link Phobos statically, don't want to 
 use .so except the basic C library. so I added option 
 `-link-defaultlib-shared=false` in dub.json by default, this 
 should not be changed.

 hi, please help with this, can we reduce the footprint?

 thanks!

 OK, I just put on another git repo, which is the simpley 
 helloworld in D, and it
 generates 849KB for print a single line!

 https://github.com/dangbinghoo/hello_world_d

 so, maybe there's something wrong with D compiling?


 thanks!

OK, talked in Discord.

answer is clear: 1. D runtime is about 400KB on amd64 stripped. 
2. phobos is set of big templates, writeln is expensive.
betterC print a helloworld only costs 6.3KB stripped.




thanks!