building boost libraries

[Erasme Beck]

Hello!

I'm trying to compile the boost libraries with emscripten.

The turorial for building projects says: 

emconfigure ./configure
   emmake make
   emcc [-Ox] project.bc -o project.js

Unfortunately, boost doesn't use configure and make but jam instead.

I found this thread talking about using boost with Emscripten: http://stackoverflow.com/questions/15724357/using-boost-with-emscripten/15732854#15732854

After the following change in the project-config.jam, he managed to compile boost:

if ! gcc in [ feature.values <toolset> ]
{
    using gcc : : "/full/path/to/em++" ;
}

I doesn't work for me.

I have too many errors to be pasted here but here are the first I run into:

erasme$ ./b2

ERROR    root: no input files

...

WARNING  root: emcc: cannot find library "rt"

...

libs/context/src/unsupported.cpp:7:2: error: "platform not supported"

#error "platform not supported"

 ^

1 error generated.

ERROR    root: compiler frontend failed to generate LLVM bitcode, halting

    "em++"  -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -fPIC  -DBOOST_ALL_NO_LIB=1 -DBOOST_CONTEXT_DYN_LINK=1 -DBOOST_CONTEXT_SOURCE -DNDEBUG  -I"." -c -o "bin.v2/libs/context/build/gcc/release/threading-multi/unsupported.o" "libs/context/src/unsupported.cpp"

...failed gcc.compile.c++ bin.v2/libs/context/build/gcc/release/threading-multi/unsupported.o...

...skipped <pbin.v2/libs/context/build/gcc/release/threading-multi>libboost_context.so.1.55.0 for lack of <pbin.v2/libs/context/build/gcc/release/threading-multi>unsupported.o...

...skipped <pstage/lib>libboost_context.so.1.55.0 for lack of <pbin.v2/libs/context/build/gcc/release/threading-multi>libboost_context.so.1.55.0...

...skipped <pstage/lib>libboost_context.so for lack of <pstage/lib>libboost_context.so.1.55.0...

Thank you for your help.

[Alon Zakai]

"platform not supported" is due to an ifdef in that file. You need to see what is going on there, and perhaps add an #ifdef EMSCRIPTEN alongside the other OSes that are  supported there.

- Alon

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