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(gcc-295.info)SDB and DWARF

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Macros for SDB and DWARF Output
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   Here are macros for SDB and DWARF output.

`SDB_DEBUGGING_INFO'
     Define this macro if GNU CC should produce COFF-style debugging
     output for SDB in response to the `-g' option.

`DWARF_DEBUGGING_INFO'
     Define this macro if GNU CC should produce dwarf format debugging
     output in response to the `-g' option.

`DWARF2_DEBUGGING_INFO'
     Define this macro if GNU CC should produce dwarf version 2 format
     debugging output in response to the `-g' option.

     To support optional call frame debugging information, you must also
     define `INCOMING_RETURN_ADDR_RTX' and either set
     `RTX_FRAME_RELATED_P' on the prologue insns if you use RTL for the
     prologue, or call `dwarf2out_def_cfa' and `dwarf2out_reg_save' as
     appropriate from `FUNCTION_PROLOGUE' if you don't.

`DWARF2_FRAME_INFO'
     Define this macro to a nonzero value if GNU CC should always output
     Dwarf 2 frame information.  If `DWARF2_UNWIND_INFO' (Note:
     Exception Region Output. is nonzero, GNU CC will output this
     information not matter how you define `DWARF2_FRAME_INFO'.

`LINKER_DOES_NOT_WORK_WITH_DWARF2'
     Define this macro if the linker does not work with Dwarf version 2.
     Normally, if the user specifies only `-ggdb' GNU CC will use Dwarf
     version 2 if available; this macro disables this.  See the
     description of the `PREFERRED_DEBUGGING_TYPE' macro for more
     details.

`PUT_SDB_...'
     Define these macros to override the assembler syntax for the
     special SDB assembler directives.  See `sdbout.c' for a list of
     these macros and their arguments.  If the standard syntax is used,
     you need not define them yourself.

`SDB_DELIM'
     Some assemblers do not support a semicolon as a delimiter, even
     between SDB assembler directives.  In that case, define this macro
     to be the delimiter to use (usually `\n').  It is not necessary to
     define a new set of `PUT_SDB_OP' macros if this is the only change
     required.

`SDB_GENERATE_FAKE'
     Define this macro to override the usual method of constructing a
     dummy name for anonymous structure and union types.  See
     `sdbout.c' for more information.

`SDB_ALLOW_UNKNOWN_REFERENCES'
     Define this macro to allow references to unknown structure, union,
     or enumeration tags to be emitted.  Standard COFF does not allow
     handling of unknown references, MIPS ECOFF has support for it.

`SDB_ALLOW_FORWARD_REFERENCES'
     Define this macro to allow references to structure, union, or
     enumeration tags that have not yet been seen to be handled.  Some
     assemblers choke if forward tags are used, while some require it.