December 22

D lang noted as having a very fast compilation time.

Playing with tiny web-interface apps I found that modern versions of dmd & vibe has such a fast compiling but a very long executable linking time.

Something like 2-3 seconds of compiling stage (with vibe prebuilt), and 24 seconds of total build time

dponyatov@i7:~/wad$ time dub build
     Pre-gen Running commands for openssl
    Starting Performing "debug" build using /usr/bin/dmd for x86_64.
  Up-to-date fswatch 0.6.1: target for configuration [library] is up to date.
  Up-to-date mir-linux-kernel 1.0.1: target for configuration [library] is up to date.
  Up-to-date taggedalgebraic 0.11.22: target for configuration [library] is up to date.
  Up-to-date eventcore 0.9.27: target for configuration [epoll] is up to date.
  Up-to-date stdx-allocator 2.77.5: target for configuration [library] is up to date.
  Up-to-date vibe-container 1.0.1: target for configuration [library] is up to date.
  Up-to-date vibe-core 2.6.0: target for configuration [epoll] is up to date.
  Up-to-date vibe-d:crypto 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:utils 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:data 0.9.7: target for configuration [library] is up to date.
  Up-to-date diet-ng 1.8.1: target for configuration [library] is up to date.
  Up-to-date vibe-d:stream 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:textfilter 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:inet 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:tls 0.9.7: target for configuration [openssl] is up to date.
  Up-to-date vibe-d:http 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:mail 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:mongodb 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:redis 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d:web 0.9.7: target for configuration [library] is up to date.
  Up-to-date vibe-d 0.9.7: target for configuration [library] is up to date.
    Building wad ~shadow: building configuration [application]
Compiling Diet HTML template index.dt...
Compiling Diet HTML template about.dt...
Compiling Diet HTML template error.dt...
     Linking wad
    Finished To force a rebuild of up-to-date targets, run again with --force
real    0m24.748s
user    0m19.133s
sys     0m2.565s
December 24

On Friday, 22 December 2023 at 19:12:14 UTC, Dmitry Ponyatov wrote:

>

D lang noted as having a very fast compilation time.

Playing with tiny web-interface apps I found that modern versions of dmd & vibe has such a fast compiling but a very long executable linking time.

Something like 2-3 seconds of compiling stage (with vibe prebuilt), and 24 seconds of total build time

Welcome to template bloat hell.

IIRC diet templates is very template heavy, it makes tons of (D) template instantiations and the linker has a lot of work because of that. It is even worse with LDC.

If there is runtime diet parser(which I doubt) instead of default render! template you can move diet to it to save on compile time.