Build failed: arithm_core.hpp: No such file or directory

[francoisbecker]

[ 31%] Generating precomp.hpp.gch/opencv_core_DEBUG.gch
/[…]/modules/core/precomp.hpp:89:27: fatal error: arithm_core.hpp: No such file or directory
compilation terminated.
modules/core/CmakeFiles/pch_Generate_opencv_core.dir/build.make:62: recipe for target 'modules/core/precomp.hpp.gch/opencv_core_DEBUG.ghc' failed

System information (version)

• OpenCV => 3.4.1-dev
• Operating System / Platform => Ubuntu 16.04, amd64
• gcc 5.4.0

Detailed description

Commit 9e0dee1 and later exhibit this issue.
Commit 6e13ffe and earlier build fine.

Steps to reproduce

[alalek]

Current workaround is to disable precompiled headers:

cmake -DENABLE_PRECOMPILED_HEADERS=OFF ...

I will take a look on this.

[francoisbecker]

(in the meantime, workaround by disabling the precompiled headers: confirmed working 👍 )

[baqwas]

Same issue on Raspberry Pi Zero W and Raspberry Pi B; running workaround on both, will take a "few" hours! Thanks for the quick response. Rgds.

[francoisbecker]

@baqwas actually the build issue has been fixed, no need for the workaround anymore on the git tip.

[baqwas]

@francoisbecker My apologies for the erroneous/redundant comment. I did a clone earlier and encountered the issue. Perhaps my GitHub inexperience is showing - still learning. The workaround, however, is working on two the RPi boards - make at 20% right now as I write. :( - my problem, I know. Gaining the experience with baby steps is invaluable for me, of course.