```{index} single: non_bincompat_options; Config function ``` ```{index} single: Config::non_bincompat_options; Perl function ``` # non_bincompat_options Return compile-time options that do not affect binary compatibility. ## Synopsis ```perl use Config; my @opts = Config::non_bincompat_options(); ``` ## What you get back A list of option names (`PERL_COPY_ON_WRITE`, `USE_LOCALE`, and so on) describing behavioural switches that do not change the ABI. Useful for feature-probing scripts that want to know whether a particular semantics is enabled without caring about XS compatibility. ## Differences from upstream - Reports only the switches that meaningfully apply to pperl's build.