Using Boost on Xcode 5 - Apple LLVM 5.0

Question

I have a problem building Boost for Xcode 5 now that there is only one compiler LLVM 5.0.

I've tried with Homebrew using --c++11, using clang.... I've tried various ideas and scripts but none has worked so far.

Zest

Have you seen boost.sh in this SO question? #17715135 – Scribe

No I haven't seen this one... even though I search for 3 days. Will give it a try – Zest

I used the super secret magic word sequence "building boost for ios" ;-) – Scribe

The link is useful but not for XCode 5. It uses darwin and the latest XCode works only with Clang. Thanks – Zest

I've just downloaded boost.sh and it built the iOS version of the library without problem (Xcode 5 DP 6 on OSX 10.8). It failed to build for iphone simulator, but that is issue from the question I linked to. – Scribe

Answer 1

To build 32/64 bit fat static binaries for boost 1.54.0 compiled with clang/llvm, the only compiler for Xcode 5:

1. Download the unix tarball (not the ZIP! -- that has CR/LF line endings and will gack)
2. Untar it.
3. cd to boost_1_54_0/

4. Run:

   ./bootstrap.sh toolset=clang

5. Run:

   ./b2 toolset=clang --without-mpi cxxflags="-arch i386 -arch x86_64 -fvisibility=hidden -fvisibility-inlines-hidden -std=c++11 -stdlib=libc++ -ftemplate-depth=512" linkflags="-stdlib=libc++" link=static stage

...which puts the output libs in ./stage/lib

Then move the libraries where you want them.

These are release libraries, which should be all you need.

This is for OSX. You can change -arch and add other options in the cxxflags= for iOS.

If you need the message passing interface, remove --without-mpi from the b2 command.

==== Fun Facts:

• building boost seems a moving target, so these instructions will likeley break in a future release
• I tried to -Wno-xxxx the warnings off in the cxxflags= ... but it didn't work
• bjam and b2 are the same thing, b2 is the new name
• clang as a first-class toolset was added somewhere along the way, so you can ignore any instructions on the web to modify "user-config.jam" (Everything you need seems to be able to be passed on the b2 command line for these one-off builds.)

Clerk

Thanks for sharing. This is actually how we do it, put all flags in cxx flags and it works perfect. Too bad brew was not working at the time, I am not sure maybe they have update for clang 5.0. Also, your note is right this works with Boost 1.54, I had some problems with 1.49. Right Answer for questions, thanks! – Zest

it says "x86: yes", "32-bit: no", "64-bit: no". It is actually compiling with 64 bit support? I entered it exactly the way you had it. – Pembroke

And what about arm7 and arm7s? Can you please help me and type here the whole command which I have to execute to make the lib run on an device? – Euchromatin

@Euchromatin were you able to find the command for doing it on android devices ? – Ream

Actually for me it was just switch from libc++ to libstd++ in project settings and all problems disappeared. – Euchromatin