diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 3f30230..c290b6f 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -9606,14 +9606,15 @@ possible. @itemx -gdwarf-@var{version} @opindex gdwarf Produce debugging information in DWARF format (if that is supported). -The value of @var{version} may be either 2, 3, 4 or 5; the default version -for most targets is 4. DWARF Version 5 is only experimental. +The value of @var{version} may be either 2, 3, 4 or 5; the default +version for most targets is 5 (with the exception of VxWorks and +Darwin/Mac OS X which default to version 2). Note that with DWARF Version 2, some ports require and always use some non-conflicting DWARF 3 extensions in the unwind tables. Version 4 may require GDB 7.0 and @option{-fvar-tracking-assignments} -for maximum benefit. +for maximum benefit. Version 5 requires GDB 8.0 or higher. GCC no longer supports DWARF Version 1, which is substantially different than Version 2 and later. For historical reasons, some |