DragonFly On-Line Manual Pages
INTRO(3) DragonFly Library Functions Manual INTRO(3)
intro - introduction to the C libraries
This section provides an overview of the C library functions, their error
returns and other common definitions and concepts. Most of these
functions are available from the C library, libc. Other libraries, such
as the math library, libm, must be indicated at compile time with the -l
option of the compiler.
The various libraries (followed by the loader flag):
libc (-lc) Standard C library functions. When using the C
compiler cc(1), it is not necessary to supply
the loader flag -lc for these functions. There
are several `libraries' or groups of functions
included inside of libc: the standard I/O
routines, database routines, bit operators,
string operators, character tests and character
operators, des encryption routines, storage
allocation, time functions, signal handling and
libcurses (-lcurses -ltermcap)
Terminal independent screen management routines
for two dimensional non-bitmap display
terminals. (See ncurses(3).)
libcompat (-lcompat) Functions which are obsolete but are available
for compatibility with 4.3BSD. In particular,
a number of system call interfaces provided in
previous releases of BSD have been included for
source code compatibility. Use of these
routines should, for the most part, be avoided.
The manual page entry for each compatibility
routine indicates the proper interface to use.
libkvm (-lkvm) Functions used to access kernel memory are in
this library. They can be used against both a
running system and a crash dump. (See kvm(3).)
libl (-ll) The library for lex(1).
libm (-lm) The math library, libm.
libtermcap (-ltermcap) The terminal independent operation library
package. (See termcap(3).)
liby (-ly) The library for yacc(1).
/usr/lib/libc.a the C library
/usr/lib/profile/libc.a the C library compiled for profiling
/usr/lib/libm.a the math library
/usr/lib/profile/libm.a the math library compiled for profiling
cc(1), ld(1), nm(1), intro(2), stdio(3)
An intro manual appeared in Version 7 AT&T UNIX.
DragonFly 5.9-DEVELOPMENT March 28, 2020 DragonFly 5.9-DEVELOPMENT