On Fri, 2003-06-06 at 01:08, Geoffrey Young wrote:
we could md5 the perl binary?
eeck!
what about computing an MD5 hash of various attributes of both perl and mod_perl - combine a few important bits from $Config the important version and compile options from mod_perl/apache?
I've got nothing against combining a few important bits from Config and others, but please no MD5 hashing ;-( I'd rather use the perl way:
perl -V:archname i686-linux-perlio
otherperl -V:archname i686-linux-thread-multi-perlio
The difference is obvious, as opposed to this:
"error. binary incompatibility detected with 4648526406e458418670b4360eea66e0 vs 52daab6784de496a3c123fa1b3b442b8, please fix this!"
the point was different. I've suggested to use md5 string for a quick testing. whereas the number of string options can grow to be quite big. You can still store the user-friendly information and display it on error.
"error. binary incompatibility detected with i686-linux-perlio vs i686-linux-thread-multi-perlio please fix this!"
But I've tried before and it's quite tricky to get the exact right
combination of $Config, USE_LARGE_FILES, etc that will guarantee binary
compatibility.
exactly: and USE_LARGE_FILES, and glibc version and what not.
I'm thinking about a simpler approach. generate a random unique number and use it for comparison. The real problem that we have, is using Apache/Foo.so against mod_perl.so that it wasn't produced with. Just ensuring that Apache/Foo.so was made by a particular mod_perl.so will work just fine.
Have I missed something?
But I do agree we should be trying as hard as possible ;-)
since you say you have tried before, do you have some prototypes we can re-use?
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