Re: [Boost-users] Context and coroutine for ARM

Try compiling it with '-v' (g++ -v t.cpp) so that the include search paths are printed ('#include <...> search starts here: ...'), and examine them to see if there is some other implementation (which presumably does not implement std::exception_ptr) of STL is included and takes precedence over the libstdc++ coming with GCC 6.3. If there is, I suggest you do a clean build of your cross-compiling toolchain. I also noticed that this time you're using `arm-unknown-linux-gnueabihf-gcc` (an unknown version) instead of `arm-unknown-linux-gnueabi-gcc` (which should be 6.3.0 from your previous post), and they seems to be two different installations. I'm not sure if this is related, but there's a chance that the two installations are messed together in some way, which may cause some problems.

On 14 May 2017, at 00:11, Daniel Estermann via Boost-users wrote:

Thanks for the minimal example hint. Here is what I get:

$ arm-unknown-linux-gnueabihf-gcc -xc++ - <

...

#include <exception>

std::exception_ptr x;

int main() {}

EOF <stdin>:3:6: error: 'exception_ptr' in namespace 'std' does not name a type

2017-05-13 17:05 GMT+02:00 d25fe0be@outlook.com : It may be worth to try to compile the following code snippet to see if your compiler is working as expected:

$ cat t.cpp #include <exception>

std::exception_ptr x;

int main() {} $ g++-6 ./t.cpp $

Perhaps your compiler (or libstdc++) is broken in some way.

...

On 13 May 2017, at 21:17, Daniel Estermann via Boost-users wrote:

No matter if I add -std=c++11 to the flags, I still get the error message: http://sprunge.us/gSXb This is my compiler's configuration: http://sprunge.us/iaWZ I'm not sure how to check why C++11 code is used though.

2017-05-13 15:02 GMT+02:00 Oliver Kowalke via Boost-users : exception_ptr is part of C++11 but not used in boost.coroutine (and the fcontext-API of boost.context) - you could apply -std=c++11(cxxflags) or check why C++11 code is used

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