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POC++11 standard libraries in libstdc++ on Mac
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  1. POC++11 standard libraries in libstdc++ on Mac
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    copied!<p>In a Xcode project which I currently work on, I am using C++11 with Apple LLVM 4.2 (clang) compiler, and using libstdc++ as my standard library, because I am using a library (NTL) which was not compiled with libc++ and so I must use libstdc++.</p> <p>When writing the following code:</p> <pre><code>#include &lt;regex&gt; int main() { return 0; } </code></pre> <p>It doesn't compile, by saying:</p> <p><code>'regex' file not found</code></p> <p>And so I can't use any C++11 library with my libstdc++ (Tried <code>&lt;mutex&gt;</code>, <code>&lt;thread&gt;</code> aswell).</p> <p>Another I tried to take is to recompile <code>NTL</code> with cc and libc++, but that doesn't seem much to work. The following is some of the errors that were produced:</p> <pre><code>../include/NTL/config.h:57:5: error: expected value in expression #if ^ ../include/NTL/config.h:88:5: error: expected value in expression #if ^ ../include/NTL/config.h:95:5: error: expected value in expression #if ^ ../include/NTL/config.h:112:5: error: expected value in expression #if ^ ../include/NTL/config.h:120:5: error: expected value in expression #if ^ ../include/NTL/config.h:143:7: error: expected value in expression #elif ^ ../include/NTL/config.h:168:5: error: expected value in expression #if ^ ../include/NTL/config.h:189:5: error: expected value in expression #if ^ ../include/NTL/config.h:208:5: error: expected value in expression #if ^ ../include/NTL/config.h:226:5: error: expected value in expression #if ^ ../include/NTL/config.h:248:5: error: expected value in expression #if ^ ../include/NTL/config.h:260:5: error: expected value in expression #if ^ ../include/NTL/config.h:273:5: error: expected value in expression #if ^ ../include/NTL/config.h:289:5: error: expected value in expression #if ^ ../include/NTL/config.h:309:5: error: expected value in expression #if ^ ../include/NTL/config.h:326:7: error: expected value in expression #elif ^ In file included from FFT.c:3: In file included from ../include/NTL/FFT.h:6: In file included from ../include/NTL/ZZ.h:19: ../include/NTL/tools.h:21:10: fatal error: 'iostream.h' file not found` </code></pre> <p>It seems that the configuration header was somehow "damaged" and that libc++ doesn't have <code>&lt;iostream.h&gt;</code> and old c++ headers. And so, recompiling <code>NTL</code> was a bit of trouble for me. </p> <p>And so, how can I fix it? How can I still use libstdc++ on my project and have C++11 Libraries? If that helps, I have g++-4.8 installed with brew. Is there a way to map libstdc++ that clang uses to a new one?</p>
 

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