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Diffstat (limited to 'pod/perldelta.pod')
| -rw-r--r-- | pod/perldelta.pod | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/pod/perldelta.pod b/pod/perldelta.pod index 7f944c24b4..f597877452 100644 --- a/pod/perldelta.pod +++ b/pod/perldelta.pod @@ -55,6 +55,26 @@ a C<dTHR>. =back +=head2 Compatible C Source API Changes + +=over + +=item C<PATCHLEVEL> is now C<PERL_VERSION> + +The cpp macros C<PERL_REVISION>, C<PERL_VERSION> and C<PERL_SUBVERSION> +are now available by default from perl.h, and reflect the base revision, +patchlevel and subversion respectively. C<PERL_REVISION> had no +prior equivalent, while C<PERL_VERSION> and C<PERL_SUBVERSION> were +previously available as C<PATCHLEVEL> and C<SUBVERSION>. + +The new names cause less pollution of the cpp namespace, and reflect what +the numbers have come to stand for in common practice. For compatibility, +the old names are still supported when patchlevel.h is explicitly +included (as required before), so there is no source incompatibility +due to the change. + +=back + =head2 Binary Incompatibilities This release is not binary compatible with the 5.005 release and its |