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Chapter 22 Linux Binary Compatibility

Restructured and parts updated by Jim Mock. Originally contributed by Brian N. Handy and Rich Murphey.

22.1 Synopsis

FreeBSD provides binary compatibility with several other UNIX® like operating systems, including Linux. At this point, you may be asking yourself why exactly, does FreeBSD need to be able to run Linux binaries? The answer to that question is quite simple. Many companies and developers develop only for Linux, since it is the latest ``hot thing'' in the computing world. That leaves the rest of us FreeBSD users bugging these same companies and developers to put out native FreeBSD versions of their applications. The problem is, that most of these companies do not really realize how many people would use their product if there were FreeBSD versions too, and most continue to only develop for Linux. So what is a FreeBSD user to do? This is where the Linux binary compatibility of FreeBSD comes into play.

In a nutshell, the compatibility allows FreeBSD users to run about 90% of all Linux applications without modification. This includes applications such as StarOffice, the Linux version of Netscape®, Adobe® Acrobat®, RealPlayer® 5 and 7, VMware, Oracle®, WordPerfect®, Doom, Quake, and more. It is also reported that in some situations, Linux binaries perform better on FreeBSD than they do under Linux.

There are, however, some Linux-specific operating system features that are not supported under FreeBSD. Linux binaries will not work on FreeBSD if they overly use the Linux /proc file system (which is different from FreeBSD's /proc file system), or i386™ specific calls, such as enabling virtual 8086 mode.

After reading this chapter, you will know:

  • How to enable Linux binary compatibility on your system.

  • How to install additional Linux shared libraries.

  • How to install Linux applications on your FreeBSD system.

  • The implementation details of Linux compatibility in FreeBSD.

Before reading this chapter, you should:

  • Know how to install additional third-party software (Chapter 4).

 

  

 

 

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