The File Extensions Database

.BOS File Extension

  • Developer by: IBM
  • Category: Developer Files
  • Format: Text

What is an .BOS file?

.BOS is Build Options Specification File

A BOS file is a build options specification file used by clearmake, a utility that comes with Rational ClearCase used to build executable programs. It contains macro definitions and ClearCase special targets saved in plain text. BOS files are commonly used to store temporary macros (like CFLAGS=/Zi) that should not be permanently included in the makefile.

The clearmake utility is a ClearCase variant of the Linux and Unix make(1) tool. It comes with Rational ClearCase, which is a collection of software tools used to manage software development projects. Several features of clearmake include derived object sharing, build avoidance, and build auditing.

Programs that open Build Options Specification File
IBM Rational ClearCase
IBM Rational ClearCase

How to solve problems with BOS files

  • Associate the BOS file extension with the correct application. On :
    Windows: Right click on any BOS file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.BOS files". Mac: Right click (or Ctrl-click) the BOS file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .BOS is Build Options Specification File. Because only the current version supports the latest BOS file format. Search, therefore, e.g. on the IBM manufacturer website after an available .BOS is Build Options Specification File update.
  • To make sure that your BOS file is not corrupted or virus-infected, get the file again and scan it with antivirus software.