edit: fixed --with-libraries arg to bootstrap, thanks @sansumbrella
Hi all,
After a bit of elbow grease, all the changes necessary have been made for libc++ support in cinder, and I'm also happy to say that I finally figured out a decent way to build the required boost binaries for this. It's all been merged into the dev branch (thanks, Andrew!) and I'll quickly go over the process here, for anyone else wanting to experiment with the tools of new on OS X.
First, in order to utilize libc++ / C++11 in your cinder app, you first have to make some changes to the project build settings (of both cinder.xcodeproj and your app project file), since it requires minimum sdk versions above those cinder is currently targeting. You must:
- Set the Deployment Target:
- Enable C++11 / libc++. Under Apple LLVM Compiler 4.1 - Language:
- set 'C++ Language Dialect' to 'C++11'
- set C++ Standard Library' to 'libc++
To build the boost binaries, first add the following to your user-config.jam (located in cinder/boost/tools/build/v2):
- using clang : osx
- : xcrun clang -arch i386 -arch x86_64 -stdlib=libc++ -std=c++11
- ;
- using clang : ios
- : xcrun clang -arch armv7 -stdlib=libc++ -std=c++11 -miphoneos-version-min=5.0 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk
- ;
Note: the path needed by -isysroot may be different in your configuration. To find out the correct path, you can build an iOS app (best to first enable libc++ / C++) in Xcode and look at the build log for any compiled .cpp file. Within the details you will find the actual command used, which contains an '-isysroot /path/to/iphone/sdk..'.
Then run the usual bootstrap so you don't build the entire library (unless you want to..):
./bootstrap.sh -–with-libraries=filesystem,thread,system,date_time,regex
Finally, for OS X do:
./b2 -a -j4 toolset=clang-osx link=static stage
cp stage/lib/*.a ../lib/macosx
and for iOS:
./b2 -a -j4 toolset=clang-ios link=static stage
cp stage/lib/*.a ../lib/ios
For iOS Simulator, just copy the same binaries from lib/macosx to lib/ios-sim, since they are i386 compatible.
If all went well, you should be able to create a project with libc++ enabled and make something completely useless like:
#include <atomic>
void TestApp::setup()
{
std::atomic<int> its_here(11);
auto useless_func = [&its_here]()
{
std::cout << "C++" << its_here << std::endl;
};
useless_func();
}
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