Page "LibcxxOnOlderSystems" was changed by ryandesign@macports.org Diff URL: <https://trac.macports.org/wiki/LibcxxOnOlderSystems?action=diff&version=20> Revision 20 Comment: rewrite introduction Changes: -------8<------8<------8<------8<------8<------8<------8<------8<-------- Index: LibcxxOnOlderSystems ========================================================================= --- LibcxxOnOlderSystems (version: 19) +++ LibcxxOnOlderSystems (version: 20) @@ -1,8 +1,16 @@ = Using libc++ on older system = -More and more C++ software is being written using the C++11 standard. The default C++ runtime on OS X 10.9 and later is libc++ which supports C++11 but on OS X 10.8 and earlier the default C++ runtime is a version of libstdc++ based on GCC 4.2.1 which does not support C++11. If you wish to build C++11-using software on 10.8 or earlier, you can switch MacPorts to use libc++ instead of libstdc++, but this must be done for MacPorts as a whole; it can't be done for individual ports. +More and more C++ software is being written using the C++11 standard. +If you have been referred to this page, you are trying to build software that uses C++11 on OS X 10.8 or earlier. +The default C++ runtime on OS X 10.8 and earlier is a version of libstdc++ based on GCC 4.2.1 which does not support C++11. +The default C++ runtime on OS X 10.9 and later is libc++ which does support C++11. -At this time the MacPorts project does not build binary packages for libc++ on systems older than 10.9, so if you make this change, MacPorts will be building all ports from source. +The recommended solution, if your computer supports it, is to upgrade to OS X 10.9 or later. If you do this, you can ignore the rest of this article, and should instead see the [wiki:Migration migration instructions]. + +Alternately, you can switch MacPorts on OS X 10.8 or earlier to use libc++ instead of libstdc++. +This must be done for MacPorts as a whole; it can't be done for individual ports. + +At this time the MacPorts project does not build binary packages for libc++ on OS X 10.8 or earlier, so if you make this change, MacPorts will be building all ports from source. If you use MacPorts C++-using ports as dependencies for C++-using software that you compile outside of MacPorts, you must compile that software using libc++ as well. -------8<------8<------8<------8<------8<------8<------8<------8<-------- -- Page URL: <https://trac.macports.org/wiki/LibcxxOnOlderSystems> MacPorts <https://www.macports.org/> Ports system for OS X This is an automated message. Someone added your email address to be notified of changes on 'LibcxxOnOlderSystems' page. If it was not you, please report to .