NaCl multithreading support

[Uttam Gandhi]

Need Help to use boost::thread with nacl

Code fails to compile, while trying to use boost::thread with nacl
examples. The error suggests that the threading support is not on by
default for NACL.
I also had a look at pi_generator using pthreads, but found nothing
special.

So, I think, either some flag needs to be turned on or some compiler
options needs to be provided, but not sure which and how.

Following is code snippet::
   ...
   15    #include <boost/thread/thread.hpp>
   ...
   51        thread* thr=new boost::thread((&method),NULL);
   ...

Following is log snippet::

scons: Building targets ...
/Developer/nacl_sdk/pepper_15/toolchain/mac_x86_newlib/bin/i686-nacl-g+
+ -o hello_world/dbg_x86_32/helper_functions.o -c -std=gnu++98 -Wno-
long-long -Wall -Wswitch-enum -pthread -pedantic -I/Users/yogeshd/src/
officebase_qocpp/common/jdkcpp/src -I/Users/yogeshd/src/boost_1_47_0 -
O0 -g -m32 -D_GNU_SOURCE=1 -D__STDC_FORMAT_MACROS=1 -D_BSD_SOURCE=1 -
D_POSIX_C_SOURCE=199506 -D_XOPEN_SOURCE=600 -I/Developer/nacl_sdk/
pepper_15 hello_world/helper_functions.cc
In file included from /Users/yogeshd/src/boost_1_47_0/boost/thread/
detail/platform.hpp:17,
                from /Users/yogeshd/src/boost_1_47_0/boost/thread/
thread.hpp:12,
                from hello_world/helper_functions.cc:15:
/Users/yogeshd/src/boost_1_47_0/boost/config/requires_threads.hpp:
47:5: error: #error "Compiler threading support is not turned on.
Please set the correct command line options for threading: -pthread
(Linux), -pthreads (Solaris) or -mthreads (Mingw32)"
In file included from /Users/yogeshd/src/boost_1_47_0/boost/thread/
thread.hpp:12,
                from hello_world/helper_functions.cc:15:

[Evgeniy Stepanov]

Try boost from http://code.google.com/p/naclports/, it is known to work.

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[Uttam Gandhi]

I have the ported libs, the script provided in ports does not build
all libs.
Hence I tried to build using ./b2 toolset=gcc, this builds all libs
However, gives error for multithreading

./boost/config/requires_threads.hpp:47:5: error: #error "Compiler

threading support is not turned on. Please set the correct command
line options for threading: -pthread (Linux), -pthreads (Solaris) or -
mthreads (Mingw32)"

I am not sure where to set this option

On Nov 23, 7:16 pm, Evgeniy Stepanov <euge...@google.com> wrote:
> Try boost fromhttp://code.google.com/p/naclports/, it is known to work.

[Evgeniy Stepanov]

You are using newlib, then. There is a lot of feature detection C++ code in boost that does not really know about newlib. Good luck with that.

[Uttam Gandhi]

I did not get what is newlib, is there other version of naclports than
what I am using ?
or, are you referring to SDK version (I am using pepper_15)

On Nov 25, 4:12 pm, Evgeniy Stepanov <euge...@google.com> wrote:
> You are using newlib, then. There is a lot of feature detection C++ code in
> boost that does not really know about newlib. Good luck with that.
>

[Egor Pasko]

On Fri, Nov 25, 2011 at 5:06 PM, Uttam Gandhi <uttam....@gmail.com> wrote:
> I did not get what is newlib, is there other version of naclports than
> what I am using ?

You can easily find what newlib is by using your favorite search engine.

> or, are you referring to SDK version (I am using pepper_15)

There are 2 toolchains, in your case: "mac_x86" and "mac_x86_newlib".
Your pasted error message suggests that you are using the latter,
while boost in naclports only has support for the former.

--
Egor Pasko

[Uttam Gandhi]

Thanks Egor, It worked

On Nov 25, 6:38 pm, Egor Pasko <pa...@google.com> wrote:

[Victor Khimenko]

Note that GLibC requires significantly more complex manifest file:

http://www.chromium.org/nativeclient/design-documents/nacl-manifest-file-format-for-glibc

In general GLibC is more compatible wiht third-party packages then newlib, but right now harder to work with because you need to specify list of all shared libraries used by your program manually.