Add epics role for KARA/base

* Add a role for EPICS base on Fedora
* Add basic support for talking to KARA's PVs
* Neither support for all further packages used at KARA nor any used for
the Jena-project

epics.yml

+---
+- hosts: localhost
+  roles:
+    - epics

hosts

@@ -96,6 +96,9 @@ las120.las.kit.edu
 las126.las.kit.edu
 las-gethmann.las.kit.edu
 
+[epics]
+las113.las.kit.edu
+
 [ripgrep]
 las113.las.kit.edu
 las-gethmann.las.kit.edu

roles/epics/tasks/main.yml

+---
+- name: unarchived
+  become: yes
+  unarchive:
+    src: "https://www.aps.anl.gov/epics/download/base/base-{{ version }}.tar.gz"
+    dest: "/usr/local/share/"
+    creates: "/usr/local/share/base-{{ version }}/Makefile"
+    remote_src: yes
+
+- name: copy environment variables
+  become: yes
+  template:
+    src: DOTepics
+    dest: /etc/profile.d/epics.sh
+
+- name: ensure gcc is installed
+  become: yes
+  dnf:
+    name: "{{ item }}"
+    state: installed
+  with_items:
+          - gcc
+          - gcc-c++
+          - readline-devel
+          - perl-ExtUtils-ParseXS
+          - perl-Pod-Checker
+          - perl-devel
+
+- name: make links
+  become: yes
+  file:
+    state: link
+    src: /usr/bin/xsubpp
+    dest: /usr/share/perl5/ExtUtils/xsubpp
+
+- name: compile epics
+  become: yes
+  make:
+    chdir: "/usr/local/share/base-{{ version }}"
+    target: "{{ item }}"
+  with_items:
+    - install
+
+- name: test epics on your own
+  debug:
+    msg: Please run 'caget -a A:SR:BeamInfo:01:Energy' from inside IBPT's office network

roles/epics/templates/DOTepics

+# export EPICS base path and configuration to interact with KARA's IOCs
+export LD_LIBRARY_PATH=/usr/local/share/base-{{version}}/lib/linux-x86_64:$LD_LIBRARY_PATH
+export EPICS_CA_ADDR_LIST=$(dig +short ankasr-appcache.anka.kit.edu)
+export PATH=/usr/local/share/base-{{version}}/bin/linux-x86_64:$PATH
+export EPICS_BASE=/usr/local/share/base-{{version}}

roles/epics/vars/main.yml

+---
+version: 3.15.5

sites.yml

@@ -31,3 +31,5 @@
   tags: jabref
 - import_playbook: ripgrep.yml
   tags: ripgrep
+- import_playbook: epics.yml
+  tags: epics