INTRO(3) BSD Library Functions Manual INTRO(3)NAMEintro — introduction to the C libraries
DESCRIPTION
This section provides an overview of the C library functions, their error
returns and other common definitions and concepts. Most of these func‐
tions are available from the System library, libSystem. Other libraries
must be indicated at compile time with the -l option of the compiler.
The various libraries (followed by the loader flag):
libSystem (-lSystem) Standard C library functions. When using the C
compiler cc(1), it is not necessary to supply the
loader flag -lSystem for these functions. There
are several `libraries' or groups of functions
included inside of libSystem: the standard I/O rou‐
tines, database routines, bit operators, string
operators, character tests and character operators,
des encryption routines, storage allocation, time
functions, signal handling and more.
For compatibility with other systems, which provide
these capabilities in separate libraries (such as
libc), symbolic links are provided for -lc, -ldbm,
-ldl, -linfo, -lm, -lpoll, -lpthread and -lrpcsvc;
they all point to libSystem.
libcurses (-lcurses -ltermcap)
Terminal independent screen management routines for
two dimensional non-bitmap display terminals. (See
ncurses(3).)
libl (-ll) The library for lex(1).
libtermcap (-ltermcap)
The terminal independent operation library package.
(See termcap(3).)
liby (-ly) The library for yacc(1).
FILES
/usr/lib/libSystem.dylib the main System library
/usr/lib/libSystem_debug.dylib the main System library compiled with
debug support
/usr/lib/libSystem_profile.dylib the main System library compiled for
profiling
SEE ALSOcc(1), ld(1), nm(1), intro(2), stdio(3)HISTORY
An intro manual appeared in Version 7 AT&T UNIX.
BSD Aug 17, 2006 BSD
