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 .\"     @(#)intro.3	8.1 (Berkeley) 6/5/93
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-.Dd October 6, 2020
+.Dd December 18, 2021
 .Dt INTRO 3
 .Os
 .Sh NAME
 .Nm intro
 .Nd introduction to the C libraries
 .Sh SYNOPSIS
 .Nm cc
 .Op Ar flags
 .Ar
 .Op Fl llibrary
 .Sh DESCRIPTION
 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,
 .Em libc .
 Other libraries, such as the math library,
 .Em libm ,
 must be indicated at compile time with the
 .Fl l
 option of the compiler.
 .Pp
 The various libraries (followed by the loader flag):
-.Bl -tag -width "libbluetooth (-lbluetooth)"
-.It Em libbluetooth Pq Fl l Ns Ar bluetooth
+.Bl -tag -width "libbluetooth"
+.It Em libbluetooth
+.Pq Fl l Ns Ar bluetooth
 The bluetooth library.
 See
 .Xr bluetooth 3 .
-.It Em libc Pq Fl l Ns Ar c
+.It Em libc
+.Pq Fl l Ns Ar c
 Standard C library functions.
 When using the C compiler
 .Xr cc 1 ,
 it is not necessary
 to supply the loader flag
 .Fl l Ns Ar c
 for these functions.
 There are several `libraries' or groups of functions included inside of
 .Em libc :
 .Bl -tag -width "XXXXXX"
 .It standard I/O routines
 see
 .Xr stdio 3
 .It database routines
 see
 .Xr db 3
 .It bit operators
 see
 .Xr bitstring 3
 .It string operators
 see
 .Xr string 3
 .It character tests and character operators
 .It storage allocation
 see
 .Xr mpool 3
 .It regular-expressions
 see
 .Xr regex 3
 .It remote procedure calls (RPC)
 see
 .Xr rpc 3
 .It time functions
 see
 .Xr time 3
 .It signal handling
 see
 .Xr signal 3
 .El
-.It Em libcalendar Pq Fl l Ns Ar calendar
+.It Em libcalendar
+.Pq Fl l Ns Ar calendar
 The calendar arithmetic library.
 See
 .Xr calendar 3 .
-.It Em libcam Pq Fl l Ns Ar cam
+.It Em libcam
+.Pq Fl l Ns Ar cam
 The common access method user library.
 See
 .Xr cam 3 .
-.It Em libcrypt Pq Fl l Ns Ar crypt
+.It Em libcrypt
+.Pq Fl l Ns Ar crypt
 The crypt library.
 See
 .Xr crypt 3 .
-.It Em libcurses Pq Fl l Ns Ar curses Fl l Ns Ar termcap
+.It Em libcurses
+.Pq Fl l Ns Ar curses Fl l Ns Ar termcap
 Terminal independent screen management routines
 for two dimensional non-bitmap display terminals.
 See
 .Xr ncurses 3 .
-.It Em libcuse Pq Fl l Ns Ar cuse
+.It Em libcuse
+.Pq Fl l Ns Ar cuse
 The userland character device library.
 See
 .Xr cuse 3 .
-.It Em libcompat Pq Fl l Ns Ar compat
+.It Em libcompat
+.Pq Fl l Ns Ar compat
 Functions which are obsolete but are available for compatibility with
 .Bx 4.3 .
 In particular,
 a number of system call interfaces provided in previous releases of
 .Bx
 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.
-.It Em libdevinfo Pq Fl l Ns Ar devinfo
+.It Em libdevinfo
+.Pq Fl l Ns Ar devinfo
 The Device and Resource Information Utility library.
 See
 .Xr devinfo 3 .
-.It Em libdevstat Pq Fl l Ns Ar devstat
+.It Em libdevstat
+.Pq Fl l Ns Ar devstat
 The Device Statistics library.
 See
 .Xr devstat 3 .
-.It Em libdwarf Pq Fl l Ns Ar dwarf
+.It Em libdwarf
+.Pq Fl l Ns Ar dwarf
 The DWARF access library.
 See
 .Xr dwarf 3 .
-.It Em libelf Pq Fl l Ns Ar elf
+.It Em libelf
+.Pq Fl l Ns Ar elf
 The ELF access library.
 See
 .Xr elf 3 .
-.It Em libfetch Pq Fl l Ns Ar fetch
+.It Em libfetch
+.Pq Fl l Ns Ar fetch
 The file transfer library.
 See
 .Xr fetch 3 .
-.It Em libfigpar Pq Fl l Ns Ar figpar
+.It Em libfigpar
+.Pq Fl l Ns Ar figpar
 The configuration file parsing library.
 See
 .Xr figpar 3 .
-.It Em libgpio Pq Fl l Ns Ar gpio
+.It Em libgpio
+.Pq Fl l Ns Ar gpio
 The general-purpose input output library (GPIO).
 See
 .Xr gpio 3 .
-.It Em libgssapi Pq Fl l Ns Ar gssapi
+.It Em libgssapi
+.Pq Fl l Ns Ar gssapi
 The generic security service application programming
 interface.
 See
 .Xr gssapi 3 .
-.It Em libjail Pq Fl l Ns Ar jail
+.It Em libjail
+.Pq Fl l Ns Ar jail
 The jail library.
 See
 .Xr jail 3 .
-.It Em libkvm Pq Fl l Ns Ar kvm
+.It Em libkvm
+.Pq Fl l Ns Ar kvm
 Functions used to access kernel memory are in this library.
 They can be used
 against both a running system and a crash dump.
 See
 .Xr kvm 3 .
-.It Em libl Pq Fl l Ns Ar l
+.It Em libl
+.Pq Fl l Ns Ar l
 The library for
 .Xr lex 1 .
-.It Em libm Pq Fl l Ns Ar m
+.It Em libm
+.Pq Fl l Ns Ar m
 The math library.
 See
 .Xr math 3 .
-.It Em libmd Pq Fl l Ns Ar md
+.It Em libmd
+.Pq Fl l Ns Ar md
 The message digest library.
 See
 .Xr md4 3 ,
 .Xr md5 3 ,
 .Xr sha 3 ,
 .Xr sha256 3 ,
 .Xr sha512 3 ,
 .Xr ripemd 3 ,
 .Xr skein 3 .
-.It Em libmp Pq Fl l Ns Ar mp
-.It Em libpam Pq Fl l Ns Ar pam
+.It Em libmp
+.Pq Fl l Ns Ar mp
+.It Em libpam
+.Pq Fl l Ns Ar pam
 The pluggable authentication module library.
 See
 .Xr pam 3 .
-.It Em libpcap Pq Fl l Ns Ar pcap
+.It Em libpcap
+.Pq Fl l Ns Ar pcap
 The packet capture library.
 See
 .Xr pcap 3 .
-.It Em libpmc Pq Fl l Ns Ar pmc
+.It Em libpmc
+.Pq Fl l Ns Ar pmc
 The performance counters library.
 See
 .Xr pmc 3 .
-.It Em libpthread Pq Fl l Ns Ar pthread
+.It Em libpthread
+.Pq Fl l Ns Ar pthread
 The POSIX threads library.
 See
 .Xr pthread 3 .
-.It Em libsysdecode Pq Fl l Ns Ar sysdecode
+.It Em libsysdecode
+.Pq Fl l Ns Ar sysdecode
 The system argument decoding library.
 See
 .Xr sysdecode 3 .
-.It Em libtermcap Pq Fl l Ns Ar termcap
+.It Em libtermcap
+.Pq Fl l Ns Ar termcap
 The terminal independent operation library package.
 See
 .Xr termcap 3 .
-.It Em libusb Pq Fl l Ns Ar usb
+.It Em libusb
+.Pq Fl l Ns Ar usb
 The USB access library.
 See
 .Xr usb 3 .
-.It Em libvgl Pq Fl l Ns Ar vgl
+.It Em libvgl
+.Pq Fl l Ns Ar vgl
 The video graphics library.
 See
 .Xr vgl 3 .
-.It Em liby Pq Fl l Ns Ar y
+.It Em liby
+.Pq Fl l Ns Ar y
 The library for
 .Xr yacc 1 .
-.It Em libz Pq Fl l Ns Ar z
+.It Em libz
+.Pq Fl l Ns Ar z
 The general-purpose data compression library.
 See
 .Xr zlib 3 .
 .El
 .Sh FILES
 .Bl -tag -width /usr/lib/libm_p.a -compact
 .It Pa /usr/lib/libc.a
 the C library
 .It Pa /usr/lib/libc_p.a
 the C library compiled for profiling
 .It Pa /usr/lib/libm.a
 the math library
 .It Pa /usr/lib/libm_p.a
 the math library compiled for profiling
 .El
 .Sh SEE ALSO
 .Xr cc 1 ,
 .Xr ld 1 ,
 .Xr nm 1 ,
 .Xr intro 2 ,
 .Xr math 3 ,
 .Xr stdio 3
 .Sh HISTORY
 An
 .Nm
 manual appeared in
 .At v7 .