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<div id="content">
<h1 class="title">level</h1>
<div id="table-of-contents">
<h2>Table of Contents</h2>
<div id="text-table-of-contents">
<ul>
<li><a href="#sec-1">1. Kiindulo allapot</a></li>
<li><a href="#sec-2">2. Alapbol rendelkezesre allo fajlok ellenorzese</a></li>
<li><a href="#sec-3">3. Probaljuk meg leforditani az alabbi C++98 kodot:</a></li>
<li><a href="#sec-4">4. Mi a helyzet a C++11 tamogatassal?</a></li>
<li><a href="#sec-5">5. Valtas clang-ra</a></li>
</ul>
</div>
</div>
<div id="outline-container-sec-1" class="outline-2">
<h2 id="sec-1"><span class="section-number-2">1</span> Kiindulo allapot</h2>
<div class="outline-text-2" id="text-1">
<ul class="org-ul">
<li>OpenBSD-5.8
</li>
<li>amd64
</li>
<li>comp58 set telepitve
</li>
</ul>
</div>
</div>
<div id="outline-container-sec-2" class="outline-2">
<h2 id="sec-2"><span class="section-number-2">2</span> Alapbol rendelkezesre allo fajlok ellenorzese</h2>
<div class="outline-text-2" id="text-2">
<div class="org-src-container">
<pre class="src src-ksh">$ ls /usr/include/g++ | grep vector
vector
</pre>
</div>
</div>
</div>
<div id="outline-container-sec-3" class="outline-2">
<h2 id="sec-3"><span class="section-number-2">3</span> Probaljuk meg leforditani az alabbi C++98 kodot:</h2>
<div class="outline-text-2" id="text-3">
<div class="org-src-container">
<pre class="src src-C++" id="cpp98.cpp">#include <vector>
#include <iterator>
#include <iostream>
int main(void)
{
std::vector<int> v;
v.push_back(42);
std::copy(v.begin(), v.end(),
std::ostream_iterator<int>(std::cout));
std::cout << std::endl;
return v.size();
}
</pre>
</div>
<div class="org-src-container">
<pre class="src src-ksh">$ g++ -o cpp98 cpp98.cpp
$ ./cpp98
42
</pre>
</div>
</div>
</div>
<div id="outline-container-sec-4" class="outline-2">
<h2 id="sec-4"><span class="section-number-2">4</span> Mi a helyzet a C++11 tamogatassal?</h2>
<div class="outline-text-2" id="text-4">
<div class="org-src-container">
<pre class="src src-C++" id="cpp11.cpp">#include <array>
#include <iterator>
#include <iostream>
int main(void)
{
std::array<int, 2> a{{1,2}};
std::copy(begin(a), end(a),
std::ostream_iterator<int>(std::cout, " "));
return a.size();
}
</pre>
</div>
<div class="org-src-container">
<pre class="src src-ksh">$ g++ -o cpp11 cpp11.cpp
cpp11.cpp:1:17: error: array: No such file or directory
cpp11.cpp: In function 'int main()':
cpp11.cpp:7: error: 'array' is not a member of 'std'
cpp11.cpp:7: error: expected primary-expression before 'int'
cpp11.cpp:7: error: expected `;' before 'int'
cpp11.cpp:14: error: expected `}' at end of input
</pre>
</div>
<p>
Ez persze nem kell, hogy meglepjen minket, hiszen a g++ 4.2-es
verzioja nem tamogatja a C++11-et
</p>
</div>
</div>
<div id="outline-container-sec-5" class="outline-2">
<h2 id="sec-5"><span class="section-number-2">5</span> Valtas clang-ra</h2>
<div class="outline-text-2" id="text-5">
<p>
Telepitsuk az llvm csomagot, nezzuk meg, hogy ebben van-e megfelelo header:
</p>
<div class="org-src-container">
<pre class="src src-ksh">$ pkg_info -L llvm | grep array
$
</pre>
</div>
<p>
Sajnos ebben sincsenek meg a C++11-ben bemutatott STL header
fajlok. Igy a fordito hiaba kepes C++11 kodot forditani, sajnos az
STL C++11 kiterjeszteset nem tudom hasznalni.
</p>
<p>
Gyozodjunk is meg errol
</p>
<div class="org-src-container">
<pre class="src src-ksh">$ clang -o cpp11 cpp11.cpp
cpp11.cpp:1:10: fatal error: 'array' file not found
#include <array>
^
1 error generated.
</pre>
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<p class="date">Created: 2016-03-25 Fri 07:45</p>
<p class="creator"><a href="http://www.gnu.org/software/emacs/">Emacs</a> 24.5.1 (<a href="http://orgmode.org">Org</a> mode 8.2.10)</p>
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