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My linux environment is 

pi64 /home/demouser # uname -a
Linux pi64 4.14.31-v8-b36f4e9e1984+ #1 SMP PREEMPT Sun Apr 1 14:15:34 BST 2018 aarch64 GNU/Linux

First time, I use Porthole to emerge opencv-3.3.0-r5, but twice stuck at 96%. Then I use command line

# emerge --noreplace media-libs/opencv

The error message are as follows:

 * Messages for package media-libs/opencv-3.3.0-r5:

 * ERROR: media-libs/opencv-3.3.0-r5::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=media-libs/opencv-3.3.0-r5::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=media-libs/opencv-3.3.0-r5::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/media-libs/opencv-3.3.0-r5/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/media-libs/opencv-3.3.0-r5/temp/environment'.
 * Working directory: '/var/tmp/portage/media-libs/opencv-3.3.0-r5/work/opencv-3.3.0-.arm64'
 * S: '/var/tmp/portage/media-libs/opencv-3.3.0-r5/work/opencv-3.3.0'

Please help. Thank you very much in advance.

sliawatimena
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  • Could you provide the outputs listed in the error message please so we can try and help? emerge --info ... and so on? – Rob Bricheno May 26 '18 at 11:15
  • Package: media-libs/opencv-3.3.0-r5
    • Repository: gentoo
    • Maintainer: amynka@gentoo.org dilfridge@gentoo.org

    • [code] * USE: arm64 eigen elibc_glibc ffmpeg gtk jpeg kernel_linux opengl openmp png python python_targets_python2_7 python_targets_python3_5 qt5 tiff userland_GNU

    • FEATURES: preserve-libs sandbox userpriv usersandbox

    Unpacking opencv-3.3.0.tar.gz to /var/tmp/portage/media-libs/opencv-3.3.0-r5/work Preparing source in /var/tmp/portage/media-libs/opencv-3.3.0-r5/work/opencv-3.3.0 ...

    – sliawatimena May 26 '18 at 13:51
  • [ 8%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/matop.cpp.o {standard input}: Error: open CFI at the end of file; missing .cfi_endproc directive {standard input}:938: Error: undefined symbol x used as an immediate value aarch64-unknown-linux-gnu-g++: internal compiler error: Killed (program cc1plus) – sliawatimena May 26 '18 at 13:58
  • do you have email, i can send the complete /var/tmp/portage/media-libs/opencv-3.3.0-r5/temp/build.log. thanks in advance. – sliawatimena May 26 '18 at 14:01