создавать и поддерживать архивы библиотеки (create and maintain library archives)
Описание (Description)
The ar utility is part of the Software Development Utilities
option.
The ar utility can be used to create and maintain groups of files
combined into an archive. Once an archive has been created, new
files can be added, and existing files in an archive can be
extracted, deleted, or replaced. When an archive consists
entirely of valid object files, the implementation shall format
the archive so that it is usable as a library for link editing
(see c99 and fort77). When some of the archived files are not
valid object files, the suitability of the archive for library
use is undefined. If an archive consists entirely of printable
files, the entire archive shall be printable.
When ar creates an archive, it creates administrative information
indicating whether a symbol table is present in the archive. When
there is at least one object file that ar recognizes as such in
the archive, an archive symbol table shall be created in the
archive and maintained by ar; it is used by the link editor to
search the archive. Whenever the ar utility is used to create or
update the contents of such an archive, the symbol table shall be
rebuilt. The -s option shall force the symbol table to be
rebuilt.
All file operands can be pathnames. However, files within
archives shall be named by a filename, which is the last
component of the pathname used when the file was entered into the
archive. The comparison of file operands to the names of files in
archives shall be performed by comparing the last component of
the operand to the name of the file in the archive.
It is unspecified whether multiple files in the archive may be
identically named. In the case of such files, however, each file
and posname operand shall match only the first file in the
archive having a name that is the same as the last component of
the operand.
