Computer Learning, My Free Writing on Computer and Information technology

Read the steps below on How to install application/program on Linux without error:

1. As a root, install gcc by executing (example Mandriva):

   $ urpmi gcc gcc-cpp gcc-c++

2. Enter the CD/DVDs if requested.
3. If gcc is not installed perfectly, you will find error message below when installing apps:

   $ C++ preprocessor “/lib/cpp” fails sanity check

4. Now, find the installer of the apps you like to install. If the installer is available on the Net (and most installer usually available on the Net), then download it by executing:

   $wget file’s_uRL

5. The files usually archieved by using extensions, such as: tar.gz, tar.bz or tar.bz2. So unarchieve those files first, by executing:

   $tar-xvf file_name.

6. Unarchieving command above will create a folder, go to that folder by executing:

   #cd folder_name.

7. Configure:

   $./configure

8. Make the installer:

   $make

9. perform the installation:

   $make install

QT Designer is a RAD Environment that can be used to make computer program analogue to those Visual Basic, Borland Delphi, Power Builder etc. If those RAD Environments are only working for Windows platform, QT Designer runs on Linux, Windows, Mac OS and many commercial UNIX variants.

QT Designer is developed by TrollTech. TrollTech is a corporation with headquarter in Oslo, the capital of Norway and has several subsidiaries in Australia and Palo Alto California.

To activate QT Designer, do steps below:

1. Click Application Kicker > Development > QT Designer menus.
2. Or by executing the command

   designer-qt3