On Wed, Jun 11, 2008 at 12:00 AM, chromatic <[EMAIL PROTECTED]> wrote:
> Could Configure.pl warn when there's no LANG? How portable is that?
Actually Configure.pl warns at his start when the value of LANG is not
supported by perl, being itself a perl program. But I don't know if
this condition can be checked by the program to give a more meaningful
message.
The no LANG is not a problem, in that case the usual behavior is to
silently fall back to the default C or POSIX locale, and perl does not
warn in that case.
So there are two unrelated problems:
- A locale unsupported by the perl config that generates warnings that
interferes with perl tests. This one possibly can be detected and
warned in Configure.pl
- A locale supported by perl that interferes with the output expected
by the test for presence and versions of external programs.
About the second:
It takes me some time to locate the yacc detection problem: the first
line of the output with C locale is:
bison (GNU Bison) 2.3
And with es_ES.UTF-8 is:
bison (GNU bison) 2.3
And the test that fails is:
$stdout =~ /Bison .*? (\d+) \. (\d+) (\w)?/x
A 'b' instead of a 'B', that's all.
I tried a simple solution that may have lesser impact in other OS than
prefixing the commands executed: adding
$ENV{LANG}='C';
before
$conf->runsteps or exit(1);
in Configure.pl
This solves the problem with bison and my locale, and I think will
solve all related problems, but I don't know if it can impact
negatively other steps.
About the first problem, I've found the following in perldoc perllocale:
Perl's moaning about locale problems can be silenced by setting the
environment variable PERL_BADLANG to a zero value, for example "0".
This method really just sweeps the problem under the carpet: you tell
Perl to shut up even when Perl sees that something is wrong. Do not
be surprised if later something locale-dependent misbehaves.
Supposing that all expected test outputs are locale independent,
setting this variable in make test can solve current problems without
risk of creating new ones.
--
Salu2
