diff options
Diffstat (limited to 'README.macosx')
| -rw-r--r-- | README.macosx | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/README.macosx b/README.macosx index c26eb0f8e6..235618a0ca 100644 --- a/README.macosx +++ b/README.macosx @@ -75,6 +75,37 @@ libraries it links to must also be universal binaries. The system libraries that Apple includes with the 10.4u SDK are all universal, but user-installed libraries may need to be re-installed as universal binaries. +=head2 64-bit PPC support + +Follow the instructions in F<INSTALL> to build perl with support for 64-bit +integers (C<use64bitint>) or both 64-bit integers and 64-bit addressing +(C<use64bitall>). In the latter case, the resulting binary will run only +on G5-based hosts. + +Support for 64-bit addressing is experimental: some aspects of Perl may be +omitted or buggy. Note the messages output by F<Configure> for further +information. Please use C<perlbug> to submit a problem report in the +event that you encounter difficulties. + +When building 64-bit modules, it is your responsiblity to ensure that linked +external libraries and frameworks provide 64-bit support: if they do not, +module building may appear to succeed, but attempts to use the module will +result in run-time dynamic linking errors, and subsequent test failures. +You can use C<file> to discover the architectures supported by a library: + + $ file libgdbm.3.0.0.dylib + libgdbm.3.0.0.dylib: Mach-O fat file with 2 architectures + libgdbm.3.0.0.dylib (for architecture ppc): Mach-O dynamically linked shared library ppc + libgdbm.3.0.0.dylib (for architecture ppc64): Mach-O 64-bit dynamically linked shared library ppc64 + +Note that this issue precludes the building of many Macintosh-specific CPAN +modules (C<Mac::*>), as the required Apple frameworks do not provide PPC64 +support. Similarly, downloads from Fink or Darwinports are unlikely to provide +64-bit support; the libraries must be rebuilt from source with the appropriate +compiler and linker flags. For further information, see Apple's +I<64-Bit Transition Guide> at +L<http://developer.apple.com/documentation/Darwin/Conceptual/64bitPorting/index.html>. + =head2 libperl and Prebinding Mac OS X ships with a dynamically-loaded libperl, but the default for @@ -230,4 +261,4 @@ E<lt>montbriand@apple.comE<gt>. =head1 DATE -Last modified 2005-11-07. +Last modified 2006-02-24. |