Re: Perl IPC::Open3 bug, affects apt-get, compiler issue?
On Mon, Jun 17, 2002 at 02:01:36PM -0700, Tony Lindgren wrote:
> * Nicholas Clark <nick@unfortu.net> [020617 13:32]:
> No differences in compile flags for perl and debug-perl, except:
>
> nw:~# perl -V > perl.txt
> nw:~# debugperl -V > debugperl.txt
> nw:~# diff -u perl.txt debugperl.txt
> --- perl.txt Mon Jun 17 13:47:29 2002
> +++ debugperl.txt Mon Jun 17 13:47:38 2002
> @@ -28,9 +28,9 @@
>
>
> Characteristics of this binary (from libperl):
> - Compile-time options: USE_LARGE_FILES
> + Compile-time options: DEBUGGING USE_LARGE_FILES
> Built under linux
> - Compiled at Jan 17 2002 09:02:54
> + Compiled at Jan 17 2002 09:45:34
> @INC:
> /usr/local/lib/perl/5.6.1
> /usr/local/share/perl/5.6.1
>
> But maybe -DDEBUGGING includes -g?
perl -V output does have compile flags in it:
Compiler:
cc='cc', ccflags ='-DDEBIAN -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O1',
-g shows up as
optimize='-g',
so if debugperl and perl differed in optimisation I would have expected your
diff to show it up.
The perl Configure script will add -DDEBUGGING into the compiler flags for
you if you answer -g to its question about which optimiser flag to use, but
that's only logic about which default answers to prompt with at configure
time. It's quite possible to set -O, -g and -DDEBUGGING completely
independently of each other.
Does anyone know if the author of FastFPE yet knows about the problem?
[Better still, is there a solution?] I guess it's not that nice to report
at the moment as the test case is rather large and ambiguous.
Nicholas Clark
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