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1,641 bytes removed ,  16:11, 22 October 2020
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or similar for libQtCore.so.4 or libQtOpenGL.so.4 .
 
or similar for libQtCore.so.4 or libQtOpenGL.so.4 .
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Generally, if in case of RHEL or related distributions you don't know the name of the package, e.g.
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RedHat Enterprise Linux 8 (CentOS 8) does not provide the needed libraries for the Qt4-based xdsgui binary (which is still the default). For such new distributions, you should install the new Qt5 xdsgui binary linked above.
  yum provides "*/libQtCore.so.4"
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would tell you what the name of the corresponding RPM is.
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RedHat Enterprise Linux 8 (CentOS 8) does not provide the needed libraries for the Qt4-based xdsgui binary (which is still the default). Qt4 libraries can be installed using the Fedora 29 packages:
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wget https://archives.fedoraproject.org/pub/archive/fedora/linux/releases/29/Everything/x86_64/os/Packages/q/qt-4.8.7-41.fc29.x86_64.rpm
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wget https://archives.fedoraproject.org/pub/archive/fedora/linux/releases/29/Everything/x86_64/os/Packages/q/qt-common-4.8.7-41.fc29.noarch.rpm
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wget https://archives.fedoraproject.org/pub/archive/fedora/linux/releases/29/Everything/x86_64/os/Packages/q/qt-x11-4.8.7-41.fc29.x86_64.rpm
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wget https://archives.fedoraproject.org/pub/archive/fedora/linux/releases/29/Everything/x86_64/os/Packages/q/qt-settings-29.0-1.fc29.noarch.rpm
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dnf install mesa-libGLU qt-4.8.7-41.fc29.x86_64.rpm qt-common-4.8.7-41.fc29.noarch.rpm qt-x11-4.8.7-41.fc29.x86_64.rpm qt-settings-29.0-1.fc29.noarch.rpm
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The qt-settings RPM is also available from EPEL. Alternatively, a non-default repository can be installed:
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dnf install https://extras.getpagespeed.com/redhat/8/noarch/RPMS/getpagespeed-extras-release-8-6.el8.gps.noarch.rpm
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dnf install mesa-libGLU qt-x11
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and answering "y" to all questions. However, using the FC29 packages is recommended. Even better, use the experimental Qt5 xdsgui binary linked above.
      
'''Ubuntu''' needs the libglu1-mesa package if you get the error message
 
'''Ubuntu''' needs the libglu1-mesa package if you get the error message
 
  xdsgui: error while loading shared libraries: libGLU.so.1: cannot open shared object file: No such file or directory
 
  xdsgui: error while loading shared libraries: libGLU.so.1: cannot open shared object file: No such file or directory
If in the case of Ubuntu you don't know the name of the package that provides a certain library, the
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  sudo apt-file search <name-of-library>
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command would find it for you (where <code><name-of-library></code> could e.g. be <code>libGLU.so.1</code>). This needs a one-time installation by
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  sudo apt install apt-file
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  sudo apt-file update
   
On the '''Mac''' (e.g. Yosemite) one needs [https://itunes.apple.com/us/app/xcode/id497799835?ls=1&mt=12 Xcode] installed. Otherwise one may obtain a popup error “You can’t open the application because it is not supported on this type of Mac.” After installation of Xcode, run the <code>strings</code> command (once) and accept the license agreement!
 
On the '''Mac''' (e.g. Yosemite) one needs [https://itunes.apple.com/us/app/xcode/id497799835?ls=1&mt=12 Xcode] installed. Otherwise one may obtain a popup error “You can’t open the application because it is not supported on this type of Mac.” After installation of Xcode, run the <code>strings</code> command (once) and accept the license agreement!
  
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