forcemerge 402181 612743 thank you Hi Derick,
there is no guarantee at all to keep same ABI between different distributions. That doesn't only apply to LFS, but also to different shared libraries used, etc. The only safe way is to compile the extension using the development files provided by the distribution. Also the /usr/bin/php5-config script on Debian has an option --phpapi which prints the version. Also you can provide .deb packages with correct dependencies. It's just not reasonable to expect that non-static binary will work across different systems. O. On Thu, Feb 10, 2011 at 12:29, Derick Rethans <[email protected]> wrote: > Package: php5 > Severity: normal > Tags: lfs > > Hi! > > I'm the author of several PHP extensions, and a user asked me to compile a > binary for him. > > I've compiled the extension using a stock PHP install, and noticed that > though the extension loaded fine on Debian and Ubuntu, it did not actually > work. The exact same source code compiled on the Debian and Ubuntu systems > worked fine. > > I've tracked this down to issues with reading files through PHP's > streams layer. What I strongly suspect here is that Debian's LFS patch changes > the size of the php_stream structure in a subtle way. However, from a compiled > binary I have no way of detecting whether the LFS patch was actually applied. > This makes it close to impossible to reject my extension from being loaded > and/or tell them to use a LFS-compiled version that I obviously can also > provide. > > If you, as Debian PHP Maintainer, find it necessary to break PHP's default > ABI/API compatibility; could you at least reflect this in the API number so > that your pre-compiled PHP refuses to load an extension compiled with the > standard/a different ABI? You already add +lfs to the extension dir's default, > so it should be easy enough. For example, something like: > > --- Zend/zend_build.h.orig 2011-02-10 11:26:12.000000000 +0000 > +++ Zend/zend_build.h 2011-02-10 11:27:03.000000000 +0000 > @@ -41,6 +41,10 @@ > #endif > > /* for private applications */ > +#if _FILE_OFFSET_BITS = 64 > +#define ZEND_BUILD_EXTRA ",LFS" > +#else > #define ZEND_BUILD_EXTRA > +#endif > > #endif > > cheers, > Derick > > -- System Information: > Debian Release: squeeze/sid > APT prefers maverick-updates > APT policy: (500, 'maverick-updates'), (500, 'maverick-security'), (500, > 'maverick') > Architecture: i386 (i686) > > Kernel: Linux 2.6.35-25-virtual (SMP w/1 CPU core) > Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) > Shell: /bin/sh linked to /bin/dash > > > > _______________________________________________ > pkg-php-maint mailing list > [email protected] > http://lists.alioth.debian.org/mailman/listinfo/pkg-php-maint > -- Ondřej Surý <[email protected]> http://blog.rfc1925.org/ -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
