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Diffstat (limited to 'INSTALL')
| -rw-r--r-- | INSTALL | 32 |
1 files changed, 32 insertions, 0 deletions
@@ -528,6 +528,38 @@ C<-Accflags=-DNO_PERL_HASH_ENV>. The C<PERL_HASH_SEED_DEBUG> environment variable can be disabled by configuring perl with C<-Accflags=-DNO_PERL_HASH_SEED_DEBUG>. +=head3 MISCELLANEOUS CONFIG + +Perl uses various defines to control defaults for its behavior. These +values are chosen to represent "sane" config, but users can override +these values in their builds if they wish. This is a list of such +settings. + +=over 2 + +=item PERL_MAX_NESTED_EVAL_BEGIN_BLOCKS_DEFAULT + +This define is used to control the default maximum number of nested +eval/BEGIN statements, and in this context require should be +understood to be a special form of eval so this means require/BEGIN +and "use" statements as well. + +Currently each C<BEGIN> block inside of an C<eval EXPR> or C<require> +operation will use a fairly high number of frames of the perl internal +C stack, and this value is used to prevent stack overflows. Normally +it is defaulted to 1000 but the default can be configured to another +value, for instance 100, like this + + -Accflags='-DPERL_MAX_NESTED_EVAL_BEGIN_BLOCKS_DEFAULT=100' + + +If you don't know what this is then it is safe to ignore it. Do not +configure this to 0 or another very low value, it will break a lot of +code. If you want to set it to a low value use the run time variable +C<${^MAX_NESTED_EVAL_BEGIN_BLOCKS}> instead. + +=back + =head3 SOCKS Perl can be configured to be 'socksified', that is, to use the SOCKS |