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32 .Nd get preferred object file format
38 .Fn getobjformat "char *buf" "size_t bufsize" "int *argcp" "char **argv"
43 queries several sources to determine the preferred object file
44 format, and copies its name into a buffer provided by the caller.
46 The object file format is determined as follows.
51 and an explicit command line argument such as
55 is present, then that determines the object file format.
57 Otherwise, if the variable
59 is set in the environment, the object file format is taken from its
62 Otherwise, if the file
64 is readable and contains a line of the form
66 the object file format is taken from there.
68 Otherwise, a built-in system default object file format is returned.
71 points to a user-supplied buffer into which the name of the object
72 file format is copied.
74 gives the size of the buffer in bytes.
77 is always null-terminated.
78 It is an error if the buffer is too
79 small to hold the null-terminated name.
83 .Dv NULL Ns -terminated
84 argument vector to be scanned for object
89 in which case the argument vector is not scanned.
93 is non-NULL, any object format options are deleted from the
94 argument vector, and the updated argument count is stored into
95 the integer referenced by
101 the argument vector is left unchanged.
105 returns the length of the object file format name, not counting the
107 If the supplied buffer is too small to hold the object file format
108 and its null terminator,
111 In that case, the contents of the buffer and argument
112 vector supplied by the caller are indeterminate.
114 .Bl -tag -width OBJFORMAT
116 If the environment variable
118 is set, it overrides the default object file format.
120 takes precedence over
124 .Bl -tag -width /etc/objformat -compact
125 .It Pa /etc/objformat
126 If present, specifies the object file format to use.
135 function first appeared in