build error:threadediter.h:326:37: error: no matching function for call to ‘std::condition_variable::notify_all() const’

[unityunreal]

After execute make on terminal, such error happens:

g++ -std=c++0x -c -DMSHADOW_FORCE_STREAM -Wall -O3 -I./mshadow/ -I/usr/local/opt/openblas/include -I./dmlc-core/include -fPIC -Iinclude -msse3 -funroll-loops -Wno-unused-parameter -Wno-unknown-pragmas -DMSHADOW_USE_CUDA=0 -DMSHADOW_USE_CBLAS=1 -DMSHADOW_USE_MKL=0 -DMSHADOW_RABIT_PS=0 -DMSHADOW_DIST_PS=0 -DMXNET_USE_OPENCV=1 `pkg-config --cflags opencv` -fopenmp  -c src/io/io.cc -o build/io/io.o
In file included from src/io/./iter_prefetcher.h:13:0,
                 from src/io/io.cc:8:
./dmlc-core/include/dmlc/threadediter.h: In lambda function:
./dmlc-core/include/dmlc/threadediter.h:326:37: error: no matching function for call to ‘std::condition_variable::notify_all() const’
           consumer_cond_.notify_all();
                                     ^
./dmlc-core/include/dmlc/threadediter.h:326:37: note: candidate is:
In file included from ./dmlc-core/include/dmlc/threadediter.h:15:0,
                 from src/io/./iter_prefetcher.h:13,
                 from src/io/io.cc:8:
/home/rescape/lib/include/c++/4.8.0/condition_variable:83:5: note: void std::condition_variable::notify_all() <near match>
     notify_all() noexcept;
     ^
/home/rescape/lib/include/c++/4.8.0/condition_variable:83:5: note:   no known conversion for implicit ‘this’ parameter from ‘const std::condition_variable*’ to ‘std::condition_variable*’
In file included from src/io/./iter_prefetcher.h:13:0,
                 from src/io/io.cc:8:
./dmlc-core/include/dmlc/threadediter.h:333:37: error: no matching function for call to ‘std::condition_variable::notify_all() const’
           consumer_cond_.notify_all();
                                     ^
./dmlc-core/include/dmlc/threadediter.h:333:37: note: candidate is:
In file included from ./dmlc-core/include/dmlc/threadediter.h:15:0,
                 from src/io/./iter_prefetcher.h:13,
                 from src/io/io.cc:8:
/home/rescape/lib/include/c++/4.8.0/condition_variable:83:5: note: void std::condition_variable::notify_all() <near match>
     notify_all() noexcept;
     ^
/home/rescape/lib/include/c++/4.8.0/condition_variable:83:5: note:   no known conversion for implicit ‘this’ parameter from ‘const std::condition_variable*’ to ‘std::condition_variable*’
In file included from src/io/./iter_prefetcher.h:13:0,
                 from src/io/io.cc:8:
./dmlc-core/include/dmlc/threadediter.h:352:45: error: no matching function for call to ‘std::condition_variable::notify_all() const’
       if (notify) consumer_cond_.notify_all();

Any suggestions of how to solve this? Thanks!

[unityunreal]

Perhaps my gcc versions causes? my gcc version is gcc version 4.8.0 (GCC)

[winstywang]

A similar issue is reported in previous project with GCC 4.8.0: dmlc/cxxnet#221 Could you please try to upgrade it? At least 4.8.4 is good to go.

[unityunreal]

Yes, I upgrade gcc version and this message disappear, perhaps the minimum version of gcc of the requirement to build mxnet should be updated on the doc site.

[winstywang]

Happy to hear that. Thanks for the advice.