$ env OPENCV_DUMP_CONFIG=1 nomacs

OpenCV build configuration is:

General configuration for OpenCV 3.4.1 =====================================
  Version control:               unknown

  Extra modules:
    Location (extra):            /var/calculate/tmp/portage/media-libs/opencv-3.4.1-r1/work/opencv_contrib-3.4.1/modules
    Version control (extra):     unknown

  Platform:
    Timestamp:                   2018-05-29T08:23:27Z
    Host:                        Linux 4.14.19-calculate x86_64
    CMake:                       3.9.6
    CMake generator:             Unix Makefiles
    CMake build tool:            /usr/bin/gmake
    Configuration:               Gentoo

  CPU/HW features:
    Baseline:                    SSE SSE2 SSE3 SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
      requested:                 SSE3
      required:                  SSE SSE2 SSE3 SSSE3 SSE4_1 SSE4_2 POPCNT AVX AVX2 FMA3

  C/C++:
    Built as dynamic libs?:      YES
    C++11:                       YES
    C++ Compiler:                /usr/lib64/ccache/bin/x86_64-pc-linux-gnu-g++  (ver 6.4.0)
    C++ flags (Release):         -O2 -march=x86-64 -pipe   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -mssse3 -msse4.1 -mpopcnt -msse4.2 -mf16c -mfma -mavx -mavx2 -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp -O3 -DNDEBUG  -DNDEBUG
    C++ flags (Debug):           -O2 -march=x86-64 -pipe   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -mssse3 -msse4.1 -mpopcnt -msse4.2 -mf16c -mfma -mavx -mavx2 -fvisibility=hidden -fvisibility-inlines-hidden -fopenmp -g  -DDEBUG -D_DEBUG
    C Compiler:                  /usr/lib64/ccache/bin/x86_64-pc-linux-gnu-gcc
    C flags (Release):           -O2 -march=x86-64 -pipe   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -mssse3 -msse4.1 -mpopcnt -msse4.2 -mf16c -mfma -mavx -mavx2 -fvisibility=hidden -fopenmp -O3 -DNDEBUG  -DNDEBUG
    C flags (Debug):             -O2 -march=x86-64 -pipe   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -mssse3 -msse4.1 -mpopcnt -msse4.2 -mf16c -mfma -mavx -mavx2 -fvisibility=hidden -fopenmp -g  -DDEBUG -D_DEBUG
    Linker flags (Release):      -Wl,--as-needed   
    Linker flags (Debug):        -Wl,--as-needed   
    ccache:                      YES
    Precompiled headers:         NO
    Extra dependencies:          dl m pthread rt /usr/lib64/libGLU.so /usr/lib64/libGL.so /usr/lib64/libtbb.so
    3rdparty dependencies:

  OpenCV modules:
    To be built:                 aruco bgsegm bioinspired calib3d ccalib core datasets dpm face features2d flann freetype fuzzy hdf hfs highgui img_hash imgcodecs imgproc java_bindings_generator line_descriptor ml objdetect optflow phase_unwrapping photo plot python3 python_bindings_generator reg rgbd saliency shape stereo stitching structured_light superres surface_matching tracking video videoio videostab ximgproc xobjdetect xphoto
    Disabled:                    cvv dnn js world xfeatures2d
    Disabled by dependency:      dnn_objdetect text
    Unavailable:                 cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev dnn_modern java matlab ovis python2 sfm ts viz
    Applications:                apps
    Documentation:               NO
    Non-free algorithms:         NO

  GUI: 
    QT:                          YES (ver 5.9.4)
      QT OpenGL support:         YES (Qt5::OpenGL 5.9.4)
    GTK+:                        NO
    OpenGL support:              YES (/usr/lib64/libGLU.so /usr/lib64/libGL.so)

  Media I/O: 
    ZLib:                        /usr/lib64/libz.so (ver 1.2.11)
    JPEG:                        /usr/lib64/libjpeg.so (ver )
    WEBP:                        /usr/lib64/libwebp.so (ver encoder: 0x0209)
    PNG:                         /usr/lib64/libpng.so (ver 1.6.34)
    TIFF:                        /usr/lib64/libtiff.so (ver 42 / 4.0.9)
    JPEG 2000:                   /usr/lib64/libjasper.so (ver 2.0.14)
    OpenEXR:                     /usr/lib64/libImath.so /usr/lib64/libIlmImf.so /usr/lib64/libIex.so /usr/lib64/libHalf.so /usr/lib64/libIlmThread.so (ver 2.2.0)

  Video I/O:
    DC1394:                      YES (ver 2.2.5)
    FFMPEG:                      YES
      avcodec:                   YES (ver 57.89.100)
      avformat:                  YES (ver 57.71.100)
      avutil:                    YES (ver 55.58.100)
      swscale:                   YES (ver 4.6.100)
      avresample:                YES (ver 3.5.0)
    GStreamer:                   
      base:                      YES (ver 1.12.4)
      video:                     YES (ver 1.12.4)
      app:                       YES (ver 1.12.4)
      riff:                      YES (ver 1.12.4)
      pbutils:                   YES (ver 1.12.4)
    libv4l/libv4l2:              1.10.1 / 1.10.1
    v4l/v4l2:                    linux/videodev2.h
    gPhoto2:                     YES

  Parallel framework:            TBB (ver 2017.0 interface 9103)

  Trace:                         YES (built-in)

  Other third-party libraries:
    VA:                          YES
    Intel VA-API/OpenCL:         NO
    Eigen:                       YES (ver 3.2.8)
    Custom HAL:                  NO
    Protobuf:                    /usr/lib64/libprotobuf.so (3.5.1)

  Python 3:
    Interpreter:                 /var/calculate/tmp/portage/media-libs/opencv-3.4.1-r1/temp/python3.5/bin/python3 (ver 3.5.5)
    Libraries:                   /usr/lib64/libpython3.5m.so (ver 3.5.5)
    numpy:                       /usr/lib64/python3.5/site-packages/numpy/core/include (ver 1.10.4)
    packages path:               lib/python3.5/site-packages

  Python (for build):            /var/calculate/tmp/portage/media-libs/opencv-3.4.1-r1/temp/python3.5/bin/python3

  Install to:                    /usr
-----------------------------------------------------------------

******************************************************************
* FATAL ERROR:                                                   *
* This OpenCV build doesn't support current CPU/HW configuration *
*                                                                *
* Use OPENCV_DUMP_CONFIG=1 environment variable for details      *
******************************************************************

Required baseline features:
SSE - OK
SSE2 - OK
SSE3 - OK
SSSE3 - OK
SSE4.1 - OK
POPCNT - OK
SSE4.2 - OK
FP16 - NOT AVAILABLE
FMA3 - NOT AVAILABLE
AVX - OK
AVX2 - NOT AVAILABLE
OpenCV(3.4.1) Error: Assertion failed (Missing support for required CPU baseline features. Check OpenCV build configuration and required CPU/HW setup.) in initialize, file /var/calculate/tmp/portage/media-libs/opencv-3.4.1-r1/work/opencv-3.4.1/modules/core/src/system.cpp, line 487
terminate called after throwing an instance of 'cv::Exception'
  what():  OpenCV(3.4.1) /var/calculate/tmp/portage/media-libs/opencv-3.4.1-r1/work/opencv-3.4.1/modules/core/src/system.cpp:487: error: (-215) Missing support for required CPU baseline features. Check OpenCV build configuration and required CPU/HW setup. in function initialize

Аварийный останов

У меня nomacs запускается без ошибок.
Спасибо.

Fixed.