Compiling release 9.5.0

[jack urombo]

The new release has this error on compiling.

[ 10%] Building CXX object bundled/tbb-2018_U2/src/CMakeFiles/bundled_tbb_debug.dir/tbb/ar

ena.cpp.o
In file included from /home/ju.rom.bo/downloads/dealii-9.5.0/bundled/tbb-2018_U2/src/tbb/s
cheduler_common.h:43,
                from /home/ju.rom.bo/downloads/dealii-9.5.0/bundled/tbb-2018_U2/src/tbb/s
cheduler.h:24,
                from /home/ju.rom.bo/downloads/dealii-9.5.0/bundled/tbb-2018_U2/src/tbb/a
rena.cpp:23:
/home/ju.rom.bo/downloads/dealii-9.5.0/bundled/tbb-2018_U2/src/../include/tbb/task.h:266:2
0: error: declaration of ‘tbb::task& tbb::internal::task_prefix::task()’ changes meaning o
f ‘task’ [-Wchanges-meaning]
 266 |         tbb::task& task() {return *reinterpret_cast<tbb::task*>(this+1);}
     |                    ^~~~
/home/ju.rom.bo/downloads/dealii-9.5.0/bundled/tbb-2018_U2/src/../include/tbb/task.h:225:9
: note: used here to mean ‘class tbb::task’
 225 |         task* next_offloaded;
     |         ^~~~
/home/ju.rom.bo/downloads/dealii-9.5.0/bundled/tbb-2018_U2/src/../include/tbb/task.h:33:7:
note: declared here
  33 | class task;
     |       ^~~~
make[2]: *** [bundled/tbb-2018_U2/src/CMakeFiles/bundled_tbb_debug.dir/build.make:90: bund
led/tbb-2018_U2/src/CMakeFiles/bundled_tbb_debug.dir/tbb/arena.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:1782: bundled/tbb-2018_U2/src/CMakeFiles/bundled_tbb_de
bug.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

[Matthias Maier]

Hi,

Would you mind to also send us the "detailed.log" file located in your
build directory?

Best,
Matthias

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[Jack Urombo]

Here is the detailed log.

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[Matthias Maier]

I can reproduce. Thanks a lot for the bug report!

We will track this issue here

https://github.com/dealii/dealii/issues/15724

We will have a new point release very soon...

For background: we have a regression testsuite variant that should check
that we can indeed compile successfully with all bundled
dependencies. But it turns out that the testsuite is misconfigured :-(

In the meantime you can either disable tbb with "-DDEAL_II_WITH_TBB=off"
when configuring deal.II (which also means no thread/task support), or
install tbb with your distribution package manager
(apt install libtbb-dev on debian/ubuntu)
and use the external one.

Best,
Matthias