Unix/Linux Go Back    


OpenDarwin 7.2.1 - man page for cmpdylib (opendarwin section 1)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)


CMPDYLIB(1)									      CMPDYLIB(1)

NAME
       cmpdylib - compare two dynamic shared libraries for compatibility

SYNOPSIS
       cmpdylib oldLibrary newLibrary

DESCRIPTION
       cmpdylib  compares  two versions of a dynamic shared library to see if they are compatible
       with each other. If the two versions are incompatible, the reason is  printed  to  stdout,
       and  the  exit status is nonzero. If they are compatible, nothing is printed, and the exit
       status is zero.

       To see if the two versions are compatible, cmpdylib first  verifies  that  newLibrary  was
       built  for  all of the architectures that oldLibrary was built for. If so, for each archi-
       tecture, it checks to see if the global symbols defined in oldLibrary are still defined in
       newLibrary.   It  then  looks  for new symbols, symbols defined in newLibrary that are not
       defined in oldLibrary.  If it finds new symbols, it  compares  the  compatibility  version
       numbers	of  the  two  libraries.   If  the  compatibility version number of newLibrary is
       greater than oldLibrary, the libraries are still compatible.  If the compatibility version
       number is the same or less, the libraries are incompatible.

OPTIONS
       oldLibrary
	      The older version of the library.

       newLibrary
	      The newer version of the library.

EXAMPLES
       This  example  shows the result of performing cmpdylib on two incompatible versions of the
       Foundation library. As stated, the versions are incompatible because the newer version was
       not built for the ppc architecture.

       cmpdylib  /System/Library/Frameworks/Foundation.framework/Foundation Foundation_proj/Foun-
       dation
       cmpdylib: file: Foundation_proj/Foundation does not contain architecture: ppc
       cmpdylib: new dynamic shared library: Foundation_proj/Foundation  does not contain  archi-
       tecture ppc

DIAGNOSTICS
       The  exit  status  is  zero if the library versions are compatible and nonzero if they are
       incompatible.

BUGS
       There are lots of other things that could be checked for that are not (such as the  Objec-
       tive C API).

Apple Computer, Inc.			 November 3, 1997			      CMPDYLIB(1)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums


All times are GMT -4. The time now is 06:16 AM.