I am trying to compile some code and it takes around 6 seconds.
Even if I change one line in one module, it takes the same time.
There are about 20 different d modules.
I used to get around 1-2 second compile times several months ago
on different projects.
I did upgrade a few things and it seems that something has made
things slow.
Can we ask the compiler what seems to be taking the most time(a
module, a template, etc...)?
If the compiler can profile itself then it would be very easy to
figure out what is slowing things down in compilation.
I feel that I should be able to compile all the modules
separately and only have to recompile the module that I
changed... and that it should be quite fast(e.g., if the module
contains nothing but the main and a write statement, regardless
of all the other stuff in the project, I'd expect that to be
fast).
For example, If I do the
import std.stdio;
int main(string[] argv)
{
writeln("Hello D-World!");
return 0;
}
it takes <1s.
Yet if I import a bunch of modules it takes 6+s and the time
never reduces on subsequent builds.
I am using Visual D.
Visual D has a separate compile and link feature but when I try
it for dmdx64 I get
Internal error: backend\mscoffobj.c 2016
It does work for x32 but the speed does not change.
I'm convinved that dmd is recompiling everything each time... and
this doesn't seem very fast IMO when less than 0.1% of the
project has changed.
