Initial commit for D language

[cyrusmsk]

GCC-family compiler is used (GDC). Currently non-optimal compilation flags are using (without static and lto) as used by C. After checking the possibility to run static and lto build in Alpine - the flags for compilation could be improved.

Also if the comparison with LLVM-based will be accepted it is possible to add LDC compiler (LLVM-based D compiler)

[niklas-heer]

@cyrusmsk I would add a LLVM version as a second entry. Then there is also the comparison possible between the different compilers.

[niklas-heer]

@cyrusmsk I didn't see it at frist, but you probably need to rebase. I rewrote how I do the tests. I'm now using hyperfine instead of my custom scbench tool, and create the needed metadata with a new scmeta tool. Furthermore, I've also introduced "functions" to the Earthfile. (see #66)

This should work for your scenario:

d:
  FROM +alpine
  # RUN apk add --no-cache ldc gcc ldc-static binutils-gold
  RUN apk add --no-cache gcc-gdc

  COPY ./src/leibniz.cpp ./
  # RUN --no-cache cc=gcc ldc2 -O3 -release -mcpu=native -flto=full -linker=gold -flto-binary=/usr/bin/ld.gold -defaultlib=phobos2-ldc-lto,druntime-ldc-lto -m64 -static leibniz.d
  RUN --no-cache gdc leibniz.d -o leibniz -O3 -frelease -march=native
  DO +BENCH --name="d" --lang="D (GDC)" --version="gdc --version" --cmd="./leibniz"

[cyrusmsk]

@niklas-heer Thanks for pointing out on the update of bench system. Now the PR should be inline with the master. Actually it is exactly how you propose in your comment

[niklas-heer]

@cyrusmsk you are very welcome 👍 Thank you for updating it. Glad to hear that it worked as intended 🙂

[niklas-heer]

@cyrusmsk thank you very much for your contribution! 👍