Standard Libraries

• Any system call is not part of the C language definition

• Such system calls are defined in libraries, identified with the suffix .a

• Libraries typically contain many .o object files

• To create your own library archive file:

  ar crv mylib.a *.o
  

• Disregard “ranlib” command in Wang, p311 (no longer needed)

• Look in /usr/lib and /usr/local/lib for most system libraries

• Can list all .o files in an archive use “ar t /usr/lib/lib.a”

• More useful to see all the function names:

  /usr/ccs/bin/nm /usr/lib/libc.a | grep FUNC
  

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