dongdigua/mirror.dongdigua.github.io
1
0
Fork 0
mirror of https://github.com/dongdigua/dongdigua.github.io synced 2024-11-23 23:53:10 +08:00
Code Issues Packages Projects Releases Wiki Activity
268a489a37
mirror.dongdigua.github.io/gentoo_llvm_targets.html
dongdigua e32c37e449 new post: damn tencent meeting 
fix post.md <br>
Merge branch 'main' into site
2022-12-03 12:03:32 +08:00

284 lines
12 KiB
HTML
Raw Blame History

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<!-- 2022-12-03 六 12:02 -->
<meta http-equiv="Content-Type" content="text/html;charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Gentoo LLVM_TARGETS not Working?</title>
<meta name="author" content="dongdigua" />
<meta name="generator" content="Org Mode" />
<style>
#content { max-width: 60em; margin: auto; }
.title { text-align: center;
margin-bottom: .2em; }
.subtitle { text-align: center;
font-size: medium;
font-weight: bold;
margin-top:0; }
.todo { font-family: monospace; color: red; }
.done { font-family: monospace; color: green; }
.priority { font-family: monospace; color: orange; }
.tag { background-color: #eee; font-family: monospace;
padding: 2px; font-size: 80%; font-weight: normal; }
.timestamp { color: #bebebe; }
.timestamp-kwd { color: #5f9ea0; }
.org-right { margin-left: auto; margin-right: 0px; text-align: right; }
.org-left { margin-left: 0px; margin-right: auto; text-align: left; }
.org-center { margin-left: auto; margin-right: auto; text-align: center; }
.underline { text-decoration: underline; }
#postamble p, #preamble p { font-size: 90%; margin: .2em; }
p.verse { margin-left: 3%; }
pre {
border: 1px solid #e6e6e6;
border-radius: 3px;
background-color: #f2f2f2;
padding: 8pt;
font-family: monospace;
overflow: auto;
margin: 1.2em;
}
pre.src {
position: relative;
overflow: auto;
}
pre.src:before {
display: none;
position: absolute;
top: -8px;
right: 12px;
padding: 3px;
color: #555;
background-color: #f2f2f299;
}
pre.src:hover:before { display: inline; margin-top: 14px;}
/* Languages per Org manual */
pre.src-asymptote:before { content: 'Asymptote'; }
pre.src-awk:before { content: 'Awk'; }
pre.src-authinfo::before { content: 'Authinfo'; }
pre.src-C:before { content: 'C'; }
/* pre.src-C++ doesn't work in CSS */
pre.src-clojure:before { content: 'Clojure'; }
pre.src-css:before { content: 'CSS'; }
pre.src-D:before { content: 'D'; }
pre.src-ditaa:before { content: 'ditaa'; }
pre.src-dot:before { content: 'Graphviz'; }
pre.src-calc:before { content: 'Emacs Calc'; }
pre.src-emacs-lisp:before { content: 'Emacs Lisp'; }
pre.src-fortran:before { content: 'Fortran'; }
pre.src-gnuplot:before { content: 'gnuplot'; }
pre.src-haskell:before { content: 'Haskell'; }
pre.src-hledger:before { content: 'hledger'; }
pre.src-java:before { content: 'Java'; }
pre.src-js:before { content: 'Javascript'; }
pre.src-latex:before { content: 'LaTeX'; }
pre.src-ledger:before { content: 'Ledger'; }
pre.src-lisp:before { content: 'Lisp'; }
pre.src-lilypond:before { content: 'Lilypond'; }
pre.src-lua:before { content: 'Lua'; }
pre.src-matlab:before { content: 'MATLAB'; }
pre.src-mscgen:before { content: 'Mscgen'; }
pre.src-ocaml:before { content: 'Objective Caml'; }
pre.src-octave:before { content: 'Octave'; }
pre.src-org:before { content: 'Org mode'; }
pre.src-oz:before { content: 'OZ'; }
pre.src-plantuml:before { content: 'Plantuml'; }
pre.src-processing:before { content: 'Processing.js'; }
pre.src-python:before { content: 'Python'; }
pre.src-R:before { content: 'R'; }
pre.src-ruby:before { content: 'Ruby'; }
pre.src-sass:before { content: 'Sass'; }
pre.src-scheme:before { content: 'Scheme'; }
pre.src-screen:before { content: 'Gnu Screen'; }
pre.src-sed:before { content: 'Sed'; }
pre.src-sh:before { content: 'shell'; }
pre.src-sql:before { content: 'SQL'; }
pre.src-sqlite:before { content: 'SQLite'; }
/* additional languages in org.el's org-babel-load-languages alist */
pre.src-forth:before { content: 'Forth'; }
pre.src-io:before { content: 'IO'; }
pre.src-J:before { content: 'J'; }
pre.src-makefile:before { content: 'Makefile'; }
pre.src-maxima:before { content: 'Maxima'; }
pre.src-perl:before { content: 'Perl'; }
pre.src-picolisp:before { content: 'Pico Lisp'; }
pre.src-scala:before { content: 'Scala'; }
pre.src-shell:before { content: 'Shell Script'; }
pre.src-ebnf2ps:before { content: 'ebfn2ps'; }
/* additional language identifiers per "defun org-babel-execute"
in ob-*.el */
pre.src-cpp:before { content: 'C++'; }
pre.src-abc:before { content: 'ABC'; }
pre.src-coq:before { content: 'Coq'; }
pre.src-groovy:before { content: 'Groovy'; }
/* additional language identifiers from org-babel-shell-names in
ob-shell.el: ob-shell is the only babel language using a lambda to put
the execution function name together. */
pre.src-bash:before { content: 'bash'; }
pre.src-csh:before { content: 'csh'; }
pre.src-ash:before { content: 'ash'; }
pre.src-dash:before { content: 'dash'; }
pre.src-ksh:before { content: 'ksh'; }
pre.src-mksh:before { content: 'mksh'; }
pre.src-posh:before { content: 'posh'; }
/* Additional Emacs modes also supported by the LaTeX listings package */
pre.src-ada:before { content: 'Ada'; }
pre.src-asm:before { content: 'Assembler'; }
pre.src-caml:before { content: 'Caml'; }
pre.src-delphi:before { content: 'Delphi'; }
pre.src-html:before { content: 'HTML'; }
pre.src-idl:before { content: 'IDL'; }
pre.src-mercury:before { content: 'Mercury'; }
pre.src-metapost:before { content: 'MetaPost'; }
pre.src-modula-2:before { content: 'Modula-2'; }
pre.src-pascal:before { content: 'Pascal'; }
pre.src-ps:before { content: 'PostScript'; }
pre.src-prolog:before { content: 'Prolog'; }
pre.src-simula:before { content: 'Simula'; }
pre.src-tcl:before { content: 'tcl'; }
pre.src-tex:before { content: 'TeX'; }
pre.src-plain-tex:before { content: 'Plain TeX'; }
pre.src-verilog:before { content: 'Verilog'; }
pre.src-vhdl:before { content: 'VHDL'; }
pre.src-xml:before { content: 'XML'; }
pre.src-nxml:before { content: 'XML'; }
/* add a generic configuration mode; LaTeX export needs an additional
(add-to-list 'org-latex-listings-langs '(conf " ")) in .emacs */
pre.src-conf:before { content: 'Configuration File'; }
table { border-collapse:collapse; }
caption.t-above { caption-side: top; }
caption.t-bottom { caption-side: bottom; }
td, th { vertical-align:top; }
th.org-right { text-align: center; }
th.org-left { text-align: center; }
th.org-center { text-align: center; }
td.org-right { text-align: right; }
td.org-left { text-align: left; }
td.org-center { text-align: center; }
dt { font-weight: bold; }
.footpara { display: inline; }
.footdef { margin-bottom: 1em; }
.figure { padding: 1em; }
.figure p { text-align: center; }
.equation-container {
display: table;
text-align: center;
width: 100%;
}
.equation {
vertical-align: middle;
}
.equation-label {
display: table-cell;
text-align: right;
vertical-align: middle;
}
.inlinetask {
padding: 10px;
border: 2px solid gray;
margin: 10px;
background: #ffffcc;
}
#org-div-home-and-up
{ text-align: right; font-size: 70%; white-space: nowrap; }
textarea { overflow-x: auto; }
.linenr { font-size: smaller }
.code-highlighted { background-color: #ffff00; }
.org-info-js_info-navigation { border-style: none; }
#org-info-js_console-label
{ font-size: 10px; font-weight: bold; white-space: nowrap; }
.org-info-js_search-highlight
{ background-color: #ffff00; color: #000000; font-weight: bold; }
.org-svg { width: 90%; }
</style>
<link rel='stylesheet' type='text/css' href='css/main.css' />
</head>
<body>
<div id="org-div-home-and-up">
<a accesskey="h" href="./../posts"> UP </a>
|
<a accesskey="H" href="https://dongdigua.github.io"> HOME </a>
</div><div id="content" class="content">
<h1 class="title">Gentoo LLVM_TARGETS not Working?</h1>
<p>
Recently, I would like to test switching from <code>gcc</code> to <a href="https://wiki.gentoo.org/wiki/Clang">clang</a> on my Gentoo VM.<br />
<del>warning: you will be crazy to have too many packages can't be build with clang</del><br />
</p>
<div class="outline-2">
<h2><span class="section-number-2">1.</span> problem</h2>
<div class="outline-text-2" id="text-1">
<p>
First I want to make <a href="https://llvm.org">LLVM</a> not targeting too many platform, but changing <code>LLVM_TARGETS</code> don't work<br />
</p>
<div class="org-src-container">
<pre class="src src-shell">[ebuild N ] sys-devel/llvm-15.0.3:15::gentoo <span style="font-weight: bold; font-style: italic;">USE</span>=<span style="font-style: italic;">"binutils-plugin libffi</span>
<span style="font-style: italic;">ncurses -debug -doc -exegesis -libedit -test -verify-sig -xar -xml -z3 -zstd"</span>
<span style="font-weight: bold; font-style: italic;">LLVM_TARGETS</span>=<span style="font-style: italic;">"(AArch64) (AMDGPU) (ARM) (AVR) (BPF) (Hexagon) (Lanai) (MSP430)</span>
<span style="font-style: italic;">(Mips) (NVPTX) (PowerPC) (RISCV) (Sparc) (SystemZ) (VE) (WebAssembly) (X86)</span>
<span style="font-style: italic;">(XCore) (-ARC) (-CSKY) (-DirectX) (-LoongArch) (-M68k) (-SPIRV)"</span> 241 KiB
</pre>
</div>
</div>
</div>
<div class="outline-2">
<h2><span class="section-number-2">2.</span> and I found <a href="https://forums.gentoo.org/viewtopic.php?p=8694331">[solved] LLVM_TARGETS not respected?</a>(Mar 2022) on gentoo forum</h2>
<div class="outline-text-2" id="text-2">
<p>
It seems that global <code>LLVM_TARGETS</code> setting is not respected,<br />
and flags such as <code>llvm_targets_AArch64</code>, <code>llvm_targets_ARM</code>, are no longer there.<br />
They're now forced by default as a precaution.<br />
</p>
</div>
</div>
<div class="outline-2">
<h2><span class="section-number-2">3.</span> <i><b>solution</b></i></h2>
<div class="outline-text-2" id="text-3">
</div>
<div class="outline-3">
<h3><span class="section-number-3">3.1.</span> add something like <code>*/* -llvm_targets_AArch64</code> into <code>/etc/portage/profile/package.use.force</code></h3>
<div class="outline-text-3" id="text-3-1">
<p>
I excluded all targets exept for X86, but still 3 left: AMDGPU, BPF, NVPTX<br />
</p>
</div>
</div>
<div class="outline-3">
<h3><span class="section-number-3">3.2.</span> so I also add <code>sys-devel/llvm -llvm_targets_AMDGPU -llvm_targets_BPF -llvm_targets_NVPTX</code> in <code>/etc/portage/package.use/</code></h3>
</div>
<div class="outline-3">
<h3><span class="section-number-3">3.3.</span> and don't forget to add that three excluder to clang or other compiler that uses llvm</h3>
</div>
</div>
<div class="outline-2">
<h2><span class="section-number-2">4.</span> finally I got this:</h2>
<div class="outline-text-2" id="text-4">
<div class="org-src-container">
<pre class="src src-shell">[ebuild N ] sys-devel/llvm-15.0.3:15::gentoo <span style="font-weight: bold; font-style: italic;">USE</span>=<span style="font-style: italic;">"binutils-plugin libffi</span>
<span style="font-style: italic;">ncurses -debug -doc -exegesis -libedit -test -verify-sig -xar -xml -z3 -zstd"</span>
<span style="font-weight: bold; font-style: italic;">LLVM_TARGETS</span>=<span style="font-style: italic;">"(X86) -AArch64 -AMDGPU (-ARC) -ARM -AVR -BPF (-CSKY) (-DirectX)</span>
<span style="font-style: italic;">-Hexagon -Lanai (-LoongArch) (-M68k) -MSP430 -Mips -NVPTX -PowerPC -RISCV</span>
<span style="font-style: italic;">(-SPIRV) -Sparc -SystemZ -VE -WebAssembly -XCore"</span> 241 KiB
</pre>
</div>
</div>
</div>
</div>
<div id="postamble" class="status">
<p class="author">Author: dongdigua</p>
<p class="date">Date: 2022-10-29 六 00:00</p>
<p class="date">Build: 2022-12-03 六 12:02</p>
<p>LICENCE: CC BY-NC-SA</p>
<p>If you have any idea, please contact me! I may add your comment</p>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink