437 lines
17 KiB
HTML
437 lines
17 KiB
HTML
<!DOCTYPE html>
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<html lang="en" class="sidebar-visible no-js light">
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<head>
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<meta charset="utf-8">
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<title>Hitch Hiker Linux</title>
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<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
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<meta name="description" content="">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="theme-color" content="#ffffff" />
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<link rel="icon" href="/favicon.svg">
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<link rel="shortcut icon" href="/favicon.png">
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<link rel="stylesheet" href="/handbook/css/variables.css">
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<link rel="stylesheet" href="/handbook/css/general.css">
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<link rel="stylesheet" href="/handbook/css/chrome.css">
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<link rel="stylesheet" href="/handbook/css/print.css" media="print">
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<!-- Fonts -->
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<link rel="stylesheet" href="/handbook/FontAwesome/css/font-awesome.css">
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<link rel="stylesheet" href="/handbook/fonts/fonts.css">
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<!-- Highlight.js Stylesheets -->
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<link rel="stylesheet" href="/handbook/highlight.css">
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<link rel="stylesheet" href="/handbook/tomorrow-night.css">
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<link rel="stylesheet" href="/handbook/ayu-highlight.css">
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<!-- Custom Stylesheets -->
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<link rel="stylesheet" href="/hhl.css">
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</head>
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<body>
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<!-- Provide site root to javascript -->
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<script type="text/javascript">
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var path_to_root = "/handbook";
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var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
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</script>
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<!-- Work around some values being stored in localStorage wrapped in quotes -->
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<script type="text/javascript">
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try {
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var theme = localStorage.getItem('mdbook-theme');
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var sidebar = localStorage.getItem('mdbook-sidebar');
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if (theme.startsWith('"') && theme.endsWith('"')) {
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localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
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}
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if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
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localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
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}
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} catch (e) { }
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</script>
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<!-- Set the theme before any content is loaded, prevents flash -->
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<script type="text/javascript">
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var theme;
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try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
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if (theme === null || theme === undefined) { theme = default_theme; }
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var html = document.querySelector('html');
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html.classList.remove('no-js')
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html.classList.remove('light')
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html.classList.add(theme);
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html.classList.add('js');
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</script>
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<!-- Hide / unhide sidebar before it is displayed -->
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<script type="text/javascript">
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var html = document.querySelector('html');
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var sidebar = 'hidden';
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if (document.body.clientWidth >= 1080) {
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try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
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sidebar = sidebar || 'visible';
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}
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html.classList.remove('sidebar-visible');
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html.classList.add("sidebar-" + sidebar);
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</script>
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<nav id="sidebar" class="sidebar" aria-label="Table of contents">
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<div class="sidebar-scrollbox">
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<ol class="chapter">
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<li class="chapter-item affix ">
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<a href="/">Home</a>
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</li>
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<li class="chapter-item affix ">
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<a href="/news/">News</a>
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</li>
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<li class="chapter-item affix ">
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<a href="/about/">About</a>
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</li>
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<li class="chapter-item affix ">
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<a href="/pub/">Download</a>
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</li>
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<li class="chapter-item affix ">
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<a href="https://git.hitchhiker-linux.org">Source</a>
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</li>
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<li class="spacer"></li>
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<li class="chapter-item affix ">
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<a href="/handbook/">Handbook</a>
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</li>
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</ol>
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</div>
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<div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
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</nav>
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<div id="page-wrapper" class="page-wrapper">
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<div class="page">
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<div id="menu-bar-hover-placeholder"></div>
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<div id="menu-bar" class="menu-bar sticky bordered">
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<div class="left-buttons">
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<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
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<i class="fa fa-bars"></i>
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</button>
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<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
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<i class="fa fa-paint-brush"></i>
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</button>
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<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
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<li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
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<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
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<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
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<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
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<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
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</ul>
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</div>
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<h1 class="menu-title">
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Hitch Hiker Linux
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</h1>
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</div>
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<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
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<script type="text/javascript">
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document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
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document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
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Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
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link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
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});
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</script>
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<div id="content" class="content">
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<main>
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<h1><a class="header" href="#recent" id="recent">Improved porting with libbsd</a></h1>
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<p class="subtitle"><strong>2020-08-24</strong></p>
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<p>The libbsd project was begun originally by the developers of the Debian K-FreeBSD project as a means of addressing differences in the available functions, headers and c macros between BSD libc and GNU libc. I have imported the source<span id="continue-reading"></span> directly into HitchHiker and "hitchhikerized" the build process. Only the static library archives are built at this time. With a few tweaks and an additional "compat.h" header to address a few omissions, this has led to an improvement in my process of porting BSD utilities, and the vast majority of the imported utilities now link with libbsd functions. There is little measurable overhead in the resulting binaries.</p>
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<p>For those utilities that are more difficult to port I have begun porting the work already done to create lobase, a portable package of OpenBSD userland, to the hitchhiker build system. I am also pulling in sources from FreeBSD now. The first program ported from FreeBSD to HHL is the ed editor, which in this case was easier to get going than the version from the NetBSD sources.</p>
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<p>I have always enjoyed the venerable Unix fortune program, and always include a call to it in my shell profile. While I did consider the idea of including it by default in the HitchHiker base system, I decided to go another route and just implement something simpler from scratch. Hence, the small C program 42, which by just prints a random quote from the HitchHiker's guide universe. It accepts no options and can only be extended by editing the source. Just a bit of fun.
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<img src="../../assets/screenshot_42.png" alt="screenshot_42.png" /></p>
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<hr>
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<p class="subtitle"><strong>Tags for this post:</strong></p>
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<a class="tags" href="/tags/porting/">Porting</a>
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<a class="tags" href="/tags/roadmap/">Roadmap</a>
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<a class="tags" href="/tags/libraries/">Libraries</a>
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<a class="tags" href="/tags/nongnu/">NonGNU</a>
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<a class="tags" href="/tags/c-programming/">C programming</a>
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</main>
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</div>
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</div>
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</div>
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<script>
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(function themes() {
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var html = document.querySelector('html');
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var themeToggleButton = document.getElementById('theme-toggle');
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var themePopup = document.getElementById('theme-list');
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var themeColorMetaTag = document.querySelector('meta[name="theme-color"]');
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var stylesheets = {
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ayuHighlight: document.querySelector("[href$='ayu-highlight.css']"),
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tomorrowNight: document.querySelector("[href$='tomorrow-night.css']"),
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highlight: document.querySelector("[href$='highlight.css']"),
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};
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function showThemes() {
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themePopup.style.display = 'block';
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themeToggleButton.setAttribute('aria-expanded', true);
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themePopup.querySelector("button#" + get_theme()).focus();
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}
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function hideThemes() {
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themePopup.style.display = 'none';
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themeToggleButton.setAttribute('aria-expanded', false);
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themeToggleButton.focus();
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}
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function get_theme() {
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var theme;
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try { theme = localStorage.getItem('mdbook-theme'); } catch (e) { }
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if (theme === null || theme === undefined) {
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return default_theme;
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} else {
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return theme;
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}
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}
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function set_theme(theme, store = true) {
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let ace_theme;
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if (theme == 'coal' || theme == 'navy') {
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stylesheets.ayuHighlight.disabled = true;
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stylesheets.tomorrowNight.disabled = false;
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stylesheets.highlight.disabled = true;
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ace_theme = "ace/theme/tomorrow_night";
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} else if (theme == 'ayu') {
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stylesheets.ayuHighlight.disabled = false;
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stylesheets.tomorrowNight.disabled = true;
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stylesheets.highlight.disabled = true;
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ace_theme = "ace/theme/tomorrow_night";
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} else {
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stylesheets.ayuHighlight.disabled = true;
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stylesheets.tomorrowNight.disabled = true;
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stylesheets.highlight.disabled = false;
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ace_theme = "ace/theme/dawn";
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}
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setTimeout(function () {
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themeColorMetaTag.content = getComputedStyle(document.body).backgroundColor;
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}, 1);
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if (window.ace && window.editors) {
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window.editors.forEach(function (editor) {
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editor.setTheme(ace_theme);
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});
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}
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var previousTheme = get_theme();
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if (store) {
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try { localStorage.setItem('mdbook-theme', theme); } catch (e) { }
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}
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html.classList.remove(previousTheme);
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html.classList.add(theme);
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}
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// Set theme
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var theme = get_theme();
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set_theme(theme, false);
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themeToggleButton.addEventListener('click', function () {
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if (themePopup.style.display === 'block') {
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hideThemes();
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} else {
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showThemes();
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}
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});
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themePopup.addEventListener('click', function (e) {
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var theme = e.target.id || e.target.parentElement.id;
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set_theme(theme);
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});
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themePopup.addEventListener('focusout', function(e) {
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// e.relatedTarget is null in Safari and Firefox on macOS (see workaround below)
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if (!!e.relatedTarget && !themeToggleButton.contains(e.relatedTarget) && !themePopup.contains(e.relatedTarget)) {
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hideThemes();
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}
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});
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// Should not be needed, but it works around an issue on macOS & iOS: https://github.com/rust-lang/mdBook/issues/628
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document.addEventListener('click', function(e) {
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if (themePopup.style.display === 'block' && !themeToggleButton.contains(e.target) && !themePopup.contains(e.target)) {
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hideThemes();
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}
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});
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document.addEventListener('keydown', function (e) {
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if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; }
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if (!themePopup.contains(e.target)) { return; }
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switch (e.key) {
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case 'Escape':
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e.preventDefault();
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hideThemes();
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break;
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case 'ArrowUp':
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e.preventDefault();
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var li = document.activeElement.parentElement;
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if (li && li.previousElementSibling) {
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li.previousElementSibling.querySelector('button').focus();
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}
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break;
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case 'ArrowDown':
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e.preventDefault();
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var li = document.activeElement.parentElement;
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if (li && li.nextElementSibling) {
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li.nextElementSibling.querySelector('button').focus();
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}
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break;
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case 'Home':
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e.preventDefault();
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themePopup.querySelector('li:first-child button').focus();
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break;
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case 'End':
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e.preventDefault();
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themePopup.querySelector('li:last-child button').focus();
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break;
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}
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});
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})();
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(function sidebar() {
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var html = document.querySelector("html");
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var sidebar = document.getElementById("sidebar");
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var sidebarLinks = document.querySelectorAll('#sidebar a');
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var sidebarToggleButton = document.getElementById("sidebar-toggle");
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var sidebarResizeHandle = document.getElementById("sidebar-resize-handle");
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var firstContact = null;
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function showSidebar() {
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html.classList.remove('sidebar-hidden')
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html.classList.add('sidebar-visible');
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Array.from(sidebarLinks).forEach(function (link) {
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link.setAttribute('tabIndex', 0);
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});
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sidebarToggleButton.setAttribute('aria-expanded', true);
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sidebar.setAttribute('aria-hidden', false);
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try { localStorage.setItem('mdbook-sidebar', 'visible'); } catch (e) { }
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}
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var sidebarAnchorToggles = document.querySelectorAll('#sidebar a.toggle');
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function toggleSection(ev) {
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ev.currentTarget.parentElement.classList.toggle('expanded');
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}
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Array.from(sidebarAnchorToggles).forEach(function (el) {
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el.addEventListener('click', toggleSection);
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});
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function hideSidebar() {
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html.classList.remove('sidebar-visible')
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html.classList.add('sidebar-hidden');
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Array.from(sidebarLinks).forEach(function (link) {
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link.setAttribute('tabIndex', -1);
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});
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sidebarToggleButton.setAttribute('aria-expanded', false);
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sidebar.setAttribute('aria-hidden', true);
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try { localStorage.setItem('mdbook-sidebar', 'hidden'); } catch (e) { }
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}
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// Toggle sidebar
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sidebarToggleButton.addEventListener('click', function sidebarToggle() {
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if (html.classList.contains("sidebar-hidden")) {
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var current_width = parseInt(
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document.documentElement.style.getPropertyValue('--sidebar-width'), 10);
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if (current_width < 150) {
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document.documentElement.style.setProperty('--sidebar-width', '150px');
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}
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showSidebar();
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} else if (html.classList.contains("sidebar-visible")) {
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hideSidebar();
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} else {
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if (getComputedStyle(sidebar)['transform'] === 'none') {
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hideSidebar();
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} else {
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showSidebar();
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}
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}
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});
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sidebarResizeHandle.addEventListener('mousedown', initResize, false);
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function initResize(e) {
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window.addEventListener('mousemove', resize, false);
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window.addEventListener('mouseup', stopResize, false);
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html.classList.add('sidebar-resizing');
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}
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function resize(e) {
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var pos = (e.clientX - sidebar.offsetLeft);
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if (pos < 20) {
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hideSidebar();
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} else {
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if (html.classList.contains("sidebar-hidden")) {
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showSidebar();
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}
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pos = Math.min(pos, window.innerWidth - 100);
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document.documentElement.style.setProperty('--sidebar-width', pos + 'px');
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}
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}
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//on mouseup remove windows functions mousemove & mouseup
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function stopResize(e) {
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html.classList.remove('sidebar-resizing');
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window.removeEventListener('mousemove', resize, false);
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window.removeEventListener('mouseup', stopResize, false);
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}
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document.addEventListener('touchstart', function (e) {
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firstContact = {
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x: e.touches[0].clientX,
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time: Date.now()
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};
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}, { passive: true });
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document.addEventListener('touchmove', function (e) {
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if (!firstContact)
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return;
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var curX = e.touches[0].clientX;
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var xDiff = curX - firstContact.x,
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tDiff = Date.now() - firstContact.time;
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if (tDiff < 250 && Math.abs(xDiff) >= 150) {
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if (xDiff >= 0 && firstContact.x < Math.min(document.body.clientWidth * 0.25, 300))
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showSidebar();
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else if (xDiff < 0 && curX < 300)
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hideSidebar();
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firstContact = null;
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}
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}, { passive: true });
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// Scroll sidebar to current active section
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var activeSection = document.getElementById("sidebar").querySelector(".active");
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if (activeSection) {
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// https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView
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activeSection.scrollIntoView({ block: 'center' });
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}
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})();
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</script>
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</body>
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</html>
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