Use default cpp fmt build script.

vendor/Fmt/doc/_templates/layout.html

@@ -0,0 +1,148 @@
+{% extends "!layout.html" %}
+
+{% block extrahead %}
+<meta name="description" content="Small, safe and fast formatting library">
+<meta name="keywords" content="C++, formatting, printf, string, library">
+<meta name="author" content="Victor Zverovich">
+<link rel="stylesheet" href="_static/fmt.css">
+{# Google Analytics #}
+<script async src="https://www.googletagmanager.com/gtag/js?id=UA-20116650-4"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', 'UA-20116650-4');
+</script>
+{% endblock %}
+
+{%- macro searchform(classes, button) %}
+<form class="{{classes}}" role="search" action="{{ pathto('search') }}"
+      method="get">
+  <div class="form-group">
+    <input type="text" name="q" class="form-control"
+           {{ 'placeholder="Search"' if not button }} >
+  </div>
+  <input type="hidden" name="check_keywords" value="yes" />
+  <input type="hidden" name="area" value="default" />
+  {% if button %}
+    <input type="submit" class="btn btn-default" value="search">
+  {% endif %}
+</form>
+{%- endmacro %}
+
+{% block header %}
+<nav class="navbar navbar-inverse">
+  <div class="tb-container">
+    <div class="row">
+      <div class="navbar-content">
+        {# Brand and toggle get grouped for better mobile display #}
+        <div class="navbar-header">
+          <button type="button" class="navbar-toggle collapsed"
+                  data-toggle="collapse" data-target=".navbar-collapse">
+            <span class="sr-only">Toggle navigation</span>
+            <span class="icon-bar"></span>
+            <span class="icon-bar"></span>
+            <span class="icon-bar"></span>
+          </button>
+          <a class="navbar-brand" href="index.html">{fmt}</a>
+        </div>
+
+        {# Collect the nav links, forms, and other content for toggling #}
+        <div class="collapse navbar-collapse">
+          <ul class="nav navbar-nav">
+            <li class="dropdown">
+              <a href="#" class="dropdown-toggle" data-toggle="dropdown"
+                 role="button" aria-expanded="false">{{ version }}
+                <span class="caret"></span></a>
+              <ul class="dropdown-menu" role="menu">
+                {% for v in versions.split(',') %}
+                <li><a href="https://fmt.dev/{{v}}">{{v}}</a></li>
+                {% endfor %}
+              </ul>
+            </li>
+            {% for name in ['Contents', 'Usage', 'API', 'Syntax'] %}
+              {% if pagename == name.lower() %}
+              <li class="active"><a href="{{name.lower()}}.html">{{name}}
+                <span class="sr-only">(current)</span></a></li>
+              {%else%}
+              <li><a href="{{name.lower()}}.html">{{name}}</a></li>
+              {%endif%}
+            {% endfor %}
+          </ul>
+          {% if pagename != 'search' %}
+            {{ searchform('navbar-form navbar-right', False) }}
+          {%endif%}
+        </div> {# /.navbar-collapse #}
+      </div> {# /.col-md-offset-2 #}
+    </div> {# /.row #}
+  </div> {# /.tb-container #}
+</nav>
+{% if pagename == "index" %}
+{% set download_url = 'https://github.com/fmtlib/fmt/releases/download' %}
+<div class="jumbotron">
+  <div class="tb-container">
+    <h1>{fmt}</h1>
+    <p class="lead">A modern formatting library</p>
+    <div class="btn-group" role="group">
+      {% set name = 'fmt' if version.split('.')[0]|int >= 3 else 'cppformat' %}
+      <a class="btn btn-success"
+         href="{{download_url}}/{{version}}/{{name}}-{{version}}.zip">
+           <span class="glyphicon glyphicon-download"></span> Download
+      </a>
+      <button type="button" class="btn btn-success dropdown-toggle"
+        data-toggle="dropdown"><span class="caret"></span></button>
+      <ul class="dropdown-menu">
+      {% for v in versions.split(',') %}
+      {% set name = 'fmt' if v.split('.')[0]|int >= 3 else 'cppformat' %}
+        <li><a href="{{download_url}}/{{v}}/{{name}}-{{v}}.zip">Version {{v}}
+          </a></li>
+      {% endfor %}
+      </ul>
+    </div>
+  </div>
+</div>
+{% endif %}
+{% endblock %}
+
+{# Disable relbars. #}
+{% block relbar1 %}
+{% endblock %}
+{% block relbar2 %}
+{% endblock %}
+
+{% block content %}
+<div class="tb-container">
+  <div class="row">
+    {# Sidebar is currently disabled.
+    <div class="bs-sidebar">
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+          {%- block sidebarlogo %}
+          {%- if logo %}
+            <p class="logo"><a href="{{ pathto(master_doc) }}">
+              <img class="logo" src="{{ pathto('_static/' + logo, 1) }}"
+                   alt="Logo"/>
+            </a></p>
+          {%- endif %}
+          {%- endblock %}
+          {%- for sidebartemplate in sidebars %}
+          {%- include sidebartemplate %}
+          {%- endfor %}
+        </div>
+      </div>
+    </div>
+    #}
+
+    <div class="content">
+      {% block body %} {% endblock %}
+    </div>
+  </div>
+</div>
+{% endblock %}
+
+{% block footer %}
+{{ super() }}
+{# Placed at the end of the document so the pages load faster. #}
+<script src="_static/bootstrap.min.js"></script>
+{% endblock %}