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Hi, I am trying to install ROOT 6.20.00 behind proxy. So in order to build ‘imt’ features, I installed tbb and its headers system wide and then configured cmake build with tbb paths like
cmake -Dcxx14=ON -Dbuiltin_tbb=OFF -DTBB_LIBRARY=/usr/lib/x86_64-linux-gnu/libtbb.so -DTBB_INCLUDE_DIR=/usr/include/tbb/ -Dvdt=OFF -DCMAKE_INSTALL_PREFIX=/home/sagar/Software/ROOT/root-6.20.00/INSTALLATION/ /home/sagar/Software/ROOT/root-6.20.00/
Now the compilation fails at 70% with error
Scanning dependencies of target Imt
[ 79%] Building CXX object core/imt/CMakeFiles/Imt.dir/src/base.cxx.o
[ 79%] Building CXX object core/imt/CMakeFiles/Imt.dir/src/TTaskGroup.cxx.o
[ 79%] Building CXX object core/imt/CMakeFiles/Imt.dir/src/TImplicitMT.cxx.o
[ 79%] Building CXX object core/imt/CMakeFiles/Imt.dir/src/TPoolManager.cxx.o
[ 79%] Building CXX object core/imt/CMakeFiles/Imt.dir/src/TThreadExecutor.cxx.o
/home/sagar/Software/ROOT/root-6.20.00/core/imt/src/TThreadExecutor.cxx: In function ‘T ROOT::Internal::ParallelReduceHelper(const std::vector<T>&, const std::function<T(T, T)>&)’:
/home/sagar/Software/ROOT/root-6.20.00/core/imt/src/TThreadExecutor.cxx:122:33: error: ‘isolate’ is not a member of ‘tbb::this_task_arena’
return tbb::this_task_arena::isolate([&]{
^~~~~~~
/home/sagar/Software/ROOT/root-6.20.00/core/imt/src/TThreadExecutor.cxx: In member function ‘void ROOT::TThreadExecutor::ParallelFor(unsigned int, unsigned int, unsigned int, const std::function<void(unsigned int)>&)’:
/home/sagar/Software/ROOT/root-6.20.00/core/imt/src/TThreadExecutor.cxx:149:29: error: ‘isolate’ is not a member of ‘tbb::this_task_arena’
tbb::this_task_arena::isolate([&]{
^~~~~~~
core/imt/CMakeFiles/Imt.dir/build.make:158: recipe for target 'core/imt/CMakeFiles/Imt.dir/src/TThreadExecutor.cxx.o' failed
make[2]: *** [core/imt/CMakeFiles/Imt.dir/src/TThreadExecutor.cxx.o] Error 1
CMakeFiles/Makefile2:18784: recipe for target 'core/imt/CMakeFiles/Imt.dir/all' failed
make[1]: *** [core/imt/CMakeFiles/Imt.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
Whats the problem. My libtbb version is 2.0 (from one of the header files in tbb-dev)
ROOT Version: 6.20.00
Platform: mint 19.2 x86_64
Compiler: gcc 7.5.0