building problem.

[joapatter]

Hi, i have followed the instrucctions for building openMVS in my sistem, but i have a problem in this step:
cmake --build . -j4

this is the problem that im having:
[ 1%] Building CXX object libs/Common/CMakeFiles/Common.dir/cmake_pch.hxx.gch
In file included from /usr/local/include/eigen3/Eigen/Core:163,
from /home/jpaton/openMVS/libs/Common/Types.h:127,
from /home/jpaton/openMVS/libs/Common/Common.h:176,
from /home/jpaton/openMVS/make/libs/Common/CMakeFiles/Common.dir/cmake_pch.hxx:5,
from :
/usr/local/include/eigen3/Eigen/src/Core/util/Meta.h: In function ‘constexpr auto Eigen::internal::index_list_size(T&&)’:
/usr/local/include/eigen3/Eigen/src/Core/util/Meta.h:482:14: error: ‘std::ssize’ has not been declared
482 | using std::ssize;
| ^~~~~
make[2]: *** [libs/Common/CMakeFiles/Common.dir/build.make:64: libs/Common/CMakeFiles/Common.dir/cmake_pch.hxx.gch] Error 1
make[1]: *** [CMakeFiles/Makefile2:475: libs/Common/CMakeFiles/Common.dir/all] Error 2
make: *** [Makefile:141: all] Error 2

it seems that something is wrong with the compiler, but i cant solve it...

[cdcseacave]

all I know it works fine with the setup described in build readme and wiki, and the CI file
pls try following those steps

[hhl134]

@joapatter bro, did you solve this problem? I happened to it too

[ChunqiDai]

It is because ssize() is supported by gcc10. You should upgrade the version of gcc and g++.

[cdcseacave]

thank you