Advent of Code

Advent of Code solutions by myself (Sijmen).

Building

There's a top-level Makefile to build and/or run all solutions. It requires a BSD make. For Debian/Ubuntu/etc:

sudo apt install bmake

Then from the top level:

bmake        # build
bmake run

Note that not all languages and years are integrated into the make tree. There are a bunch of project files for various tools scattered around, such as Visual C++ 6 projects, Makefiles targeting Turbo C and the odd Rust project.

Build targets

It's also possible to build/run just a single year or year/language. Often those have additional targets, e.g. vis:

cd 2023/c
bmake run
bmake bench  # benchmark with /usr/bin/time
bmake vis    # generate some visualisations with ffmpeg or dot

To run specific days or with other input files:

cd 2023/c
bmake run DAYS=day12 INPUT=../data/12-sample.txt
bmake run DAYS=day15 INPUT=/path/to/my/inputs.txt
bmake run DAYS="day12 day15" INPUT.day12=... INPUT.day15=...

Inputs

Without input overrides, the Makefiles expect inputs at inputs/YYYY/DD-input.txt from the repository root, e.g. inputs/2023/15-input.txt. Apart from some samples, no inputs are provided in the repo as per Advent of Code guidelines. The inputs submodule referenced in this repository is private.

Build options

Since there are solutions in various languages this requires a selection of different build tools, runtimes, etc. The following flags can be passed to make to disable languages/tools that are enabled by default:

• WITH_DOTNET=0 for 'modern' .NET with dotnet
• WITH_MONO=0 for .NET 4 with Mono (mcs)
• WITH_CPP17=0 for code using C++17 features
• WITH_DOT=0 for visualisations using dot form Graphviz

The following flags enable languages that are disabled by default:

• WITH_BASIC=1 for cbmbasic

For example:

bmake run WITH_DOTNET=0 WITH_BASIC=1

Standard build variables are mostly honored, e.g. CC and CFLAGS.

Score card

2023

                     1---------2-----
            1234567890123456789012345
C           *******************1****
C (DOS)     ** *  * *
C++                      *
C#          *
Python      ****          *         *
Kotlin      ****
manually                       2

2022

                     1---------2-----
            1234567890123456789012345
C           *************************
C#          ***
AWK         ** *
Rust        *

2021

                     1---------2-----
            1234567890123456789012345
C           ***********************1*
C++         ***
C#          **** ***    **
C64 BASIC   **              *
AWK          *                     1
Excel       **                     1
manually                          22
armv6 asm   **

2020

                     1---------2-----
            1234567890123456789012345
C           *************************
C#           ** **   1
JavaScript                        *
C64 BASIC   *
awk          *1        **1
sh          *

2015

                     1---------2-----
            1234567890123456789012345
C           ******************
C#                  *
awk                *
sh