On Thursday, 21 August 2025 at 13:52:32 UTC, Monkyyy wrote:
On Thursday, 21 August 2025 at 05:38:08 UTC, evilrat wrote:
On Wednesday, 20 August 2025 at 15:33:45 UTC, monkyyy wrote:
once again dconf contains people who talk about compile speed
as if it can be slow
What are they doing? Even my worse compile time abstraction
was O(n^2) or maybe some awful string concatenation of an
entire file; still effectively instant
Wheres a 1000 line file that does something meta
programmingly useful that takes 5 minutes?
Do they lose track of what the compiler is even doing? Do
they turn off the template recursion depth limit?
I have godot-dlang builds (with dub/LDC) compiling for about 3
minutes on top hardware. But this is more of a config issues
and how LDC handles all that code symbols(functions, etc...),
having to build a spaghetti templates for over 1k classes is
no joke. This is something i am planning to look into, having
a tiny WASM game scripts for 30 Mb shared library is no fun.
This is mainly because it uses dub import-paths AND
source-paths together for usability simplicity reasons. Would
be much faster to remove source-paths and properly configure
D's -i include pattern, that requires figuring dub
configuration that properly uses predefined env variables.
spaghetti template
Can you post what you believe is slow?
Can dub cause 3 minute compiles, I would've thought it would
O() based on file count (reading json badily into concat a
unnesserily complex compile commmand) is dub some how worse
then I thought possible?
Like i've said it is from the fact that the project tries to
build over 1k classes, an entire godot API.
It does templated binding calls, parameter conversions, class
registration, etc...
This is also related to LDC's way of managing symbol visibility
for shared libraries, it simply does not knows what needed,
except maybe the simplest cases, can be partially solved with
doing `dub --build-mode=allAtOnce`.
DMD on the other hand does all this in just seconds.
here is a cold full rebuild using DMD on windows
`godot-dlang> measure-command { dub build :test }`
`TotalSeconds : 13,9210259`
and a build after minor change
`TotalSeconds : 1,7115313`
