'bits/c++config.h' not found when cross-compiling boost 1.60.0 for android

[Peter Gusev]

Trying to cross-compile boost for android. Using stand-alone toolchain, generated as:

    make_standalone_toolchain.py --arch arm64 --api 21 --unified-headers --install-dir ~/Documents/Work/ndnrtc-android/toolchain --force

However, when building boost, I'm getting lots of errors like:

    /toolchain/include/c++/4.9.x/cstddef:44:10: fatal error: 'bits/c++config.h' file not found

    #include <bits/c++config.h>

             ^

    1 error generated.

This file is indeed absent from the toolchain's include path, I'm wondering, however, why other files still reference it and how one may fix it?

[AppCoder]

I'm guessing that you deleted the ~/Documents/Work/ndnrtc-android/toolchain
prefix from the error (and it's not really trying to read files from the
root /toolchain/include, if not, that might be a hint.)

NDK version would be handy, and your host os.  Also the bjam file, and b2
command options are other places that issues can slip in with the wrong
include paths.

As an "it's not impossible" type of encouragement, I've got boost 1.62.0 building
with a standalone clang from NDK 13.1.3345770.   I'm not using the unified
headers stuff (so that might be the version issue)...  

[Alex Cohn]

I believe this is NDK r15. The standalone toolchain has 'bits/c++config.h' file in 

include/c++/4.9.x/aarch64-linux-android

Maybe you must add this directory to include path manually.

BR,

Alex

[Dan Albert]

Maybe you must add this directory to include path manually.

Shouldn't need to, and I'm fairly sure we do test the cross product of ABI * toolchain * STL for this.

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