Re: undefined CPP constants

[Joerg Sommer <joerg@xxxxxxxxxxxx>]

Hello John,

"John E. Davis" <davis@xxxxxxxxxxxxx> wrote:
> Joerg Sommer <joerg@xxxxxxxxxxxx> wrote:
>>I would suggest these compiler flags for gcc: -Wformat=2 -Wunused -Wundef
>>-Wextra
>
> The -Wextra does not work with my version of gcc (3.3.5).

It was named -W before. With the version 3.4 it was renamed to -Wextra.

`-Wextra'
     (This option used to be called `-W'.  The older name is still
     supported, but the newer name is more descriptive.)  Print extra

> I usually compile with these flags:
>
>    -Wall -W -pedantic -Wno-long-long -Winline \
>      -Wmissing-prototypes -Wnested-externs -Wpointer-arith \
>      -Wcast-align -Wshadow -Wstrict-prototypes
>
> I will also start using -Wunused and -Wundef.

The warning you get with -Wformat=2 is easily fixable with "%*d".

Regards, Jörg.
-- 
$ cat /dev/random
#!/usr/bin/perl -WT
print "hello world\n";

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