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27 .\" Id: dwarf_def_macro.3 2122 2011-11-09 15:35:14Z jkoshy
34 .Nd add a macro definition to a DWARF producer instance
41 .Fa "Dwarf_P_Debug dbg"
42 .Fa "Dwarf_Unsigned lineno"
45 .Fa "Dwarf_Error *err"
50 adds a macro definition to a DWARF producer instance.
54 should reference a DWARF producer instance allocated using
55 .Xr dwarf_producer_init 3
57 .Xr dwarf_producer_init_b 3 .
61 specifies the line number of the source line where the macro is
63 A line number of zero is used for macros that are defined
64 before any source file is read.
68 should point to a NUL-terminated string containing the name
70 For function-like macros this parameter should also include
71 parentheses and parameter names if any.
75 should point to a NUL-terminated string containing the value
77 If the macro doesn't have a value, argument
79 should be set to NULL.
83 is not NULL, it will be used to store error information in case of an
90 In case of an error, function
97 To record the fact that a macro named
99 was defined at line 20 of the current macro file, use:
100 .Bd -literal -offset indent
104 /* ... Assume 'dbg' refers to a DWARF producer instance... */
105 if (dwarf_def_macro(dbg, 20, "_STDIO_H_", NULL, &de) != DW_DLV_OK)
106 errx(EXIT_FAILURE, "dwarf_def_macro failed: %s",
113 .Bl -tag -width ".Bq Er DW_DLE_ARGUMENT"
114 .It Bq Er DW_DLE_ARGUMENT
120 .It Bq Er DW_DLE_MEMORY
121 An out of memory condition was encountered during the execution of the
126 .Xr dwarf_end_macro_file 3 ,
127 .Xr dwarf_producer_init 3 ,
128 .Xr dwarf_producer_init_b 3 ,
129 .Xr dwarf_start_macro_file 3 ,
130 .Xr dwarf_undef_macro 3 ,
131 .Xr dwarf_vendor_ext 3