gex/README.md

gex = gajumaru exchange

Currently there is only one thing, which is the Gajumaru HTTP Daemon.

How to run gex_httpd

Last updated: September 23, 2025 (PRH).

1. Install Erlang and zx/zomp

   Source: Building Erlang 26.2.5 on Ubuntu 24.04

   Adapt this to your Linux distribution.

   1.a. Install necessary build tools

       ```bash
       sudo apt update
       sudo apt upgrade
       sudo apt install \
           gcc curl g++ dpkg-dev build-essential automake autoconf \
           libncurses-dev libssl-dev flex xsltproc libwxgtk3.2-dev \
           wget vim git
       ```
   

   1.b. Put Kerl somewhere in your $PATH. This is a tool to build Erlang releases.

       ```bash
       wget -O ~/bin/kerl https://raw.githubusercontent.com/kerl/kerl/master/kerl
       chmod u+x ~/bin/kerl
       ```
   

   1.c. Build Erlang from source using Kerl

       ```bash
       kerl update releases
       ## use the most recent one that looks stable
       ## you do need to type the number twice, that's not a typo
       kerl build 28.1 28.1
       kerl install 28.1 ~/.erts/28.1
       ```
   

   1.d. Put Erlang in your $PATH

       Update .bashrc or .zshrc or whatever with the following line:
   
       ```bash
       . $HOME/.erts/28.1/activate
       ```
   

   1.e. Install zx

       ```bash
       wget -q https://zxq9.com/projects/zomp/get_zx && bash get_zx
       ```
   

   1.f. Test zx works

       zx installs itself to `~/bin`, so make sure that's in your
       `$PATH`.
   
       ```bash
       zx run erltris
       ```