xref: /dragonfly/usr.bin/c89/c89.1 (revision 36a3d1d6)
1.\"
2.\" Copyright (c) 1997 Joerg Wunsch
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26.\" $FreeBSD: src/usr.bin/c89/c89.1,v 1.11 2007/03/10 07:10:01 ru Exp $
27.\" $DragonFly: src/usr.bin/c89/c89.1,v 1.3 2007/09/22 21:13:47 pavalos Exp $
28.\"
29.Dd September 17, 1997
30.Os
31.Dt C89 1
32.Sh NAME
33.Nm c89
34.Nd POSIX.2 C language compiler
35.Sh SYNOPSIS
36.Nm
37.Op Fl cEgOs
38.Oo Fl D Ar name Ns Oo = Ns Ar value Oc Oc ...
39.Oo Fl I Ar directory Oc ...
40.Oo Fl L Ar directory Oc ...
41.Op Fl o Ar outfile
42.Oo Fl U Ar name Oc ...
43.Ar operand ...
44.Sh DESCRIPTION
45This is the name of the C language compiler as required by the
46.St -p1003.2
47standard.
48.Pp
49The
50.Nm
51compiler accepts the following options:
52.Bl -tag -width indent
53.It Fl c
54Suppress the link-edit phase of the compilation, and do not remove any
55object files that are produced.
56.It Fl D Ar name Ns Op = Ns Ar value
57Define name as if by a C-language
58.Ic #define
59directive.
60If no
61.Dq = Ns Ar value
62is given, a value of 1 will be used.
63Note that in order to request a
64translation as specified by
65.St -p1003.2
66you need to define
67.Dv _POSIX_SOURCE
68either in the source or using this option.
69The
70.Fl D
71option has lower precedence than the
72.Fl U
73option.
74That is, if
75.Ar name
76is used in both a
77.Fl U
78and a
79.Fl D
80option,
81.Ar name
82will be undefined regardless of the order of the options.
83The
84.Fl D
85option may be specified more than once.
86.It Fl E
87Copy C-language source files to the standard output, expanding all
88preprocessor directives; no compilation will be performed.
89.It Fl g
90Produce symbolic information in the object or executable files.
91.It Fl I Ar directory
92Change the algorithm for searching for headers whose names are not
93absolute pathnames to look in the directory named by the
94.Ar directory
95pathname before looking in the usual places.
96Thus, headers whose
97names are enclosed in double-quotes
98.Pq Qq
99will be searched for first
100in the directory of the file with the
101.Ic #include
102line, then in
103directories named in
104.Fl I
105options, and last in the usual places.
106For headers whose names are enclosed in angle brackets
107.Pq Aq ,
108the header
109will be searched for only in directories named in
110.Fl I
111options and then in the usual places.
112Directories named in
113.Fl I
114options shall be searched in the order specified.
115The
116.Fl I
117option may be specified more than once.
118.It Fl L Ar directory
119Change the algorithm of searching for the libraries named in the
120.Fl l
121objects to look in the directory named by the
122.Ar directory
123pathname before looking in the usual places.
124Directories named in
125.Fl L
126options will be searched in the order specified.
127The
128.Fl L
129option may be specified more than once.
130.It Fl o Ar outfile
131Use the pathname
132.Ar outfile ,
133instead of the default
134.Pa a.out ,
135for the executable file produced.
136.It Fl O
137Optimize the compilation.
138.It Fl s
139Produce object and/or executable files from which symbolic and other
140information not required for proper execution has been removed
141(stripped).
142.It Fl U Ar name
143Remove any initial definition of
144.Ar name .
145The
146.Fl U
147option may be specified more than once.
148.El
149.Pp
150An operand is either in the form of a pathname or the form
151.Fl l
152library.
153At least one operand of the pathname form needs to be specified.
154Supported operands are of the form:
155.Bl -tag -offset indent -width ".Fl l Ar library"
156.It Ar file Ns Pa .c
157A C-language source file to be compiled and optionally linked.
158The operand must be of this form if the
159.Fl c
160option is used.
161.It Ar file Ns Pa .a
162A library of object files, as produced by
163.Xr ar 1 ,
164passed directly to the link editor.
165.It Ar file Ns Pa .o
166An object file produced by
167.Nm Fl c ,
168and passed directly to the link editor.
169.It Fl l Ar library
170Search the library named
171.Pa lib Ns Ar library Ns Pa .a .
172A library will be searched when its name is encountered, so the
173placement of a
174.Fl l
175operand is significant.
176.El
177.Sh SEE ALSO
178.Xr ar 1 ,
179.Xr c99 1 ,
180.Xr cc 1
181.Sh STANDARDS
182The
183.Nm
184utility is believed to comply with
185.St -p1003.2 .
186