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[Dmitry Shachnev <mitya57@xxxxxxxxx>]

Hi!

It looks like you are quoting wrong debian/rules. Mine (5.5.1+dfsg-
16ubuntu7.5) have:

gles2_architectures := armel armhf

And arm64 was added to this list only in Yakkety and later versions. So
not having OpenGL ES on arm64 is intentional in Xenial.

** Changed in: qtbase-opensource-src (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1709881

Title:
  [xenial] QT5 gles support for arm64 architecture

Status in qtbase-opensource-src package in Ubuntu:
  Invalid

Bug description:
  According to the Xenial's build log, it did not build as gles for the
  arm64 even though it should be built with -opengl es2 option.

  > debian/rules
  gles2_architectures := armel armhf arm64                                                                                                                                                      
  ifeq ($(DEB_HOST_ARCH),$(findstring $(DEB_HOST_ARCH), $(gles2_architectures)))                                                                                                                
          extra_configure_opts += -opengl es2                                                                                                                                                   
  else                                                                                                                                                                                          
          extra_configure_opts += -opengl desktop                                 
  endif 

  Here is the xenial's build log and it shows OpenGL as Desktop version.

  - Xenial build log: https://launchpadlibrarian.net/319422529/buildlog_ubuntu-xenial-arm64.qtbase-opensource-src_5.5.1+dfsg-16ubuntu7.5_BUILDING.txt.gz
    OpenGL / OpenVG: 
      EGL .................. yes
      OpenGL ............... desktop

  However, the zesty's build log shows OpenGL as ES2.

  - Zesty build log: https://launchpadlibrarian.net/328680692/buildlog_ubuntu-zesty-arm64.qtbase-opensource-src_5.7.1+dfsg-2ubuntu4~1.17.04.1_BUILDING.txt.gz
    OpenGL / OpenVG: 
      EGL .................. yes
      OpenGL ............... yes (OpenGL ES 2.0+)

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