Brett Cannon wrote:
I finally realized why clang has not been silencing its warnings about
unused return values: I have -Wno-unused-value set in CFLAGS which
comes before OPT (which defines -Wall) as set in PY_CFLAGS in
Makefile.pre.in.
I could obviously set OPT in my environment, but that would
On Wed, Jun 23, 2010 at 14:53, Brett Cannon wrote:
> I finally realized why clang has not been silencing its warnings about
> unused return values: I have -Wno-unused-value set in CFLAGS which
> comes before OPT (which defines -Wall) as set in PY_CFLAGS in
> Makefile.pre.in.
>
> I could obviously
Brett Cannon wrote:
> On Wed, Jun 23, 2010 at 14:53, Brett Cannon wrote:
>> I finally realized why clang has not been silencing its warnings about
>> unused return values: I have -Wno-unused-value set in CFLAGS which
>> comes before OPT (which defines -Wall) as set in PY_CFLAGS in
>> Makefile.pre.
On Sat, Jun 26, 2010 at 16:37, M.-A. Lemburg wrote:
> Brett Cannon wrote:
>> On Wed, Jun 23, 2010 at 14:53, Brett Cannon wrote:
>>> I finally realized why clang has not been silencing its warnings about
>>> unused return values: I have -Wno-unused-value set in CFLAGS which
>>> comes before OPT (w
On Sat, Jun 26, 2010 at 4:37 PM, M.-A. Lemburg wrote:
> Brett Cannon wrote:
>> On Wed, Jun 23, 2010 at 14:53, Brett Cannon wrote:
>>> I finally realized why clang has not been silencing its warnings about
>>> unused return values: I have -Wno-unused-value set in CFLAGS which
>>> comes before OPT
Brett Cannon wrote:
On Sat, Jun 26, 2010 at 16:37, M.-A. Lemburg wrote:
Brett Cannon wrote:
On Wed, Jun 23, 2010 at 14:53, Brett Cannon wrote:
[SKIP]
Since no one objected I swapped the order in r82259. In case anyone
else uses clang to compile Python, this means that -Wno-unused-value
will
On Sun, Jun 27, 2010 at 12:37 AM, M.-A. Lemburg wrote:
> Brett Cannon wrote:
>> On Wed, Jun 23, 2010 at 14:53, Brett Cannon wrote:
>>> I finally realized why clang has not been silencing its warnings about
>>> unused return values: I have -Wno-unused-value set in CFLAGS which
>>> comes before OPT
On Sun, Jun 27, 2010 at 6:46 AM, Jeffrey Yasskin wrote:
> AC_PROG_CC is the macro that sets CFLAGS to -g -O2 on gcc-based
> systems
> (http://www.gnu.org/software/hello/manual/autoconf/C-Compiler.html#index-AC_005fPROG_005fCC-842).
> If Python's configure.in sets an otherwise-empty CFLAGS to -g b
On Sun, Jun 27, 2010 at 1:04 PM, Mark Dickinson wrote:
> On Sun, Jun 27, 2010 at 6:46 AM, Jeffrey Yasskin wrote:
>> AC_PROG_CC is the macro that sets CFLAGS to -g -O2 on gcc-based
>> systems
>> (http://www.gnu.org/software/hello/manual/autoconf/C-Compiler.html#index-AC_005fPROG_005fCC-842).
>> I
On Sun, Jun 27, 2010 at 13:37, Jeffrey Yasskin wrote:
> On Sun, Jun 27, 2010 at 1:04 PM, Mark Dickinson wrote:
>> On Sun, Jun 27, 2010 at 6:46 AM, Jeffrey Yasskin wrote:
>>> AC_PROG_CC is the macro that sets CFLAGS to -g -O2 on gcc-based
>>> systems
>>> (http://www.gnu.org/software/hello/manual
On Sun, Jun 27, 2010 at 9:37 PM, Jeffrey Yasskin wrote:
> On Sun, Jun 27, 2010 at 1:04 PM, Mark Dickinson wrote:
>> I think saving and restoring CFLAGS across AC_PROG_CC was attempted in
>> http://bugs.python.org/issue8211 . It turned out that it broke OS X
>> universal builds.
>
> Thanks for the
Brett Cannon wrote:
> On Sun, Jun 27, 2010 at 13:37, Jeffrey Yasskin wrote:
>> On Sun, Jun 27, 2010 at 1:04 PM, Mark Dickinson wrote:
>>> On Sun, Jun 27, 2010 at 6:46 AM, Jeffrey Yasskin wrote:
AC_PROG_CC is the macro that sets CFLAGS to -g -O2 on gcc-based
systems
(http://www.gn
On Mon, Jun 28, 2010 at 12:38 PM, M.-A. Lemburg wrote:
>> On Sun, Jun 27, 2010 at 13:37, Jeffrey Yasskin wrote:
>>> On Sun, Jun 27, 2010 at 1:04 PM, Mark Dickinson wrote:
I'm not sure I understand the importance of allowing AC_PROG_CC to set
CFLAGS (if CFLAGS is undefined at the point
Mark Dickinson wrote:
> On Mon, Jun 28, 2010 at 12:38 PM, M.-A. Lemburg wrote:
>>> On Sun, Jun 27, 2010 at 13:37, Jeffrey Yasskin wrote:
On Sun, Jun 27, 2010 at 1:04 PM, Mark Dickinson wrote:
> I'm not sure I understand the importance of allowing AC_PROG_CC to set
> CFLAGS (if CFLAG
On Mon, Jun 28, 2010 at 3:04 PM, M.-A. Lemburg wrote:
> Why do you think that the default -O2 is unwanted
Because it can cause debug builds of Python to be built with
optimization enabled, as we've already seen at least twice.
> and how do you know
> whether the compiler accepts -g as option ?
Mark Dickinson wrote:
> On Mon, Jun 28, 2010 at 3:04 PM, M.-A. Lemburg wrote:
>> Why do you think that the default -O2 is unwanted
>
> Because it can cause debug builds of Python to be built with
> optimization enabled, as we've already seen at least twice.
Then let me put it this way:
How many
M.-A. Lemburg wrote:
> Mark Dickinson wrote:
>> On Mon, Jun 28, 2010 at 3:04 PM, M.-A. Lemburg wrote:
>>> Why do you think that the default -O2 is unwanted
>>
>> Because it can cause debug builds of Python to be built with
>> optimization enabled, as we've already seen at least twice.
>
> Then le
On Mon, Jun 28, 2010 at 4:28 PM, M.-A. Lemburg wrote:
> Mark Dickinson wrote:
>> On Mon, Jun 28, 2010 at 3:04 PM, M.-A. Lemburg wrote:
>>> Why do you think that the default -O2 is unwanted
>>
>> Because it can cause debug builds of Python to be built with
>> optimization enabled, as we've already
Mark Dickinson wrote:
> On Mon, Jun 28, 2010 at 4:28 PM, M.-A. Lemburg wrote:
>> Mark Dickinson wrote:
>>> On Mon, Jun 28, 2010 at 3:04 PM, M.-A. Lemburg wrote:
Why do you think that the default -O2 is unwanted
>>>
>>> Because it can cause debug builds of Python to be built with
>>> optimiza
On Jun 28, 2010, at 05:28 PM, M.-A. Lemburg wrote:
>How many Python users will compile Python in debug mode ?
How many Python users compile Python at all? :)
>The point is that the default build of Python should use
>the correct production settings for the C compiler out of
>the box and that's w
On Jun 28, 2010, at 06:03 PM, M.-A. Lemburg wrote:
>OPT already uses -O0 if --with-pydebug is used and the
>compiler supports -g. Since OPT gets added after CFLAGS, the override
>already happens...
So nobody's proposing to drop that? Good! Ignore my last message then. :)
-Barry
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Barry Warsaw wrote:
> On Jun 28, 2010, at 05:28 PM, M.-A. Lemburg wrote:
>
>> How many Python users will compile Python in debug mode ?
>
> How many Python users compile Python at all? :)
>
>> The point is that the default build of Python should use
>> the correct production settings for the C c
Steve Holden writes:
> I agree - trying to step through -O2 optimized code isn't going to
> help debug your code, it's going to help you debug the
> optimizer. That's a very rare use case.
Not really. I don't have a lot of practice in debugging at that
level, so take it with a grain of salt,
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