On 10/19/10 11:19 PM, Segher Boessenkool wrote:
I've got some code written by someone else, which has
g++ -W -Wall foobar.cc
gcc is not indicting -W is an unknown option. The gcc documentation says
-w
(lower case) is to suppress all warnings, but I can't find -W (upper case)
documented.
The index gets you to
http://gcc.gnu.org/onlinedocs/gcc-4.5.1/gcc/Warning-Options.html#index-W-236
-Wextra
This enables some extra warning flags that are not enabled by -Wall.
(This option used to be called -W. The older name is still supported,
but the newer name is more descriptive.)
Most people still use -W, it's so nice and short ;-)
Segher
Thank you. That could certainly be better documented. I searched for what I
thought was the obvious thing "-W ", but of course here there's no space "-W."
Do you think two RFEs sensible RFE's would be
1) Make a note by "-w" that's it not to be confused with -W, since the two
options are almost opposite of each other.
2) Document -W to say it's a depreciated option - one should use -Werror instead?
Dave
