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C89(1) FreeBSD General Commands Manual C89(1)
NAME
c89 - POSIX.2 C language compiler
SYNOPSIS
c89 [-cEgOs] [-D name[=value]] ... [-I directory] ... [-L directory] ...
[-o outfile] [-U name] ... operand ...
DESCRIPTION
This is the name of the C language compiler as required by the IEEE Std
1003.2 ("POSIX.2") standard.
The c89 compiler accepts the following options:
-c Suppress the link-edit phase of the compilation, and do not
remove any object files that are produced.
-D name[=value]
Define name as if by a C-language #define directive. If no
"=value" is given, a value of 1 will be used. Note that in order
to request a translation as specified by IEEE Std 1003.2
("POSIX.2") you need to define _POSIX_SOURCE either in the source
or using this option. The -D option has lower precedence than
the -U option. That is, if name is used in both a -U and a -D
option, name will be undefined regardless of the order of the
options. The -D option may be specified more than once.
-E Copy C-language source files to the standard output, expanding
all preprocessor directives; no compilation will be performed.
-g Produce symbolic information in the object or executable files.
-I directory
Change the algorithm for searching for headers whose names are
not absolute pathnames to look in the directory named by the
directory pathname before looking in the usual places. Thus,
headers whose names are enclosed in double-quotes ("") will be
searched for first in the directory of the file with the #include
line, then in directories named in -I options, and last in the
usual places. For headers whose names are enclosed in angle
brackets (<>), the header will be searched for only in
directories named in -I options and then in the usual places.
Directories named in -I options shall be searched in the order
specified. The -I option may be specified more than once.
-L directory
Change the algorithm of searching for the libraries named in the
-l objects to look in the directory named by the directory
pathname before looking in the usual places. Directories named
in -L options will be searched in the order specified. The -L
option may be specified more than once.
-o outfile
Use the pathname outfile, instead of the default a.out, for the
executable file produced.
-O Optimize the compilation.
An operand is either in the form of a pathname or the form -l library.
At least one operand of the pathname form needs to be specified.
Supported operands are of the form:
file.c A C-language source file to be compiled and
optionally linked. The operand must be of this form
if the -c option is used.
file.a A library of object files, as produced by ar(1),
passed directly to the link editor.
file.o An object file produced by c89 -c, and passed
directly to the link editor.
-l library Search the library named liblibrary.a. A library
will be searched when its name is encountered, so the
placement of a -l operand is significant.
SEE ALSO
ar(1), c99(1), cc(1)
STANDARDS
The c89 utility is believed to comply with IEEE Std 1003.2 ("POSIX.2").
FreeBSD 14.0-RELEASE-p6 September 17, 1997 FreeBSD 14.0-RELEASE-p6