Re: AIX shared libraries (was Re: [PATCHES] [HACKERS] Fix linking of OpenLDAP libraries)
Tom Lane wrote: Is it possible that the rules have changed across AIX versions, and that the code in there now is needful for older versions? I don't think that this behaviour has changed. I remember it from AIX 4.3.2. AIX 4.3 is the first version to support the -brtl. The current code is in place to mimic the behaviour of dlopen, etc, on the older platforms. I think we are at a point that we can stop maintaining AIX older than 4.3 if we want. -rocco ---(end of broadcast)--- TIP 6: explain analyze is your friend
AIX shared libraries (was Re: [PATCHES] [HACKERS] Fix linking of OpenLDAP libraries)
Albe Laurenz [EMAIL PROTECTED] writes: Tom Lane wrote: I think there's a reasonable argument that by installing a .a file that isn't a shared library, we are violating the platform's conventions. The natural way in AIX would be: - Create libpq.so - Create libpq.a by 'rm -f libpq.a; ar -rc libpq.a libpq.so' - Install only libpq.a Hm. This seems possible with some moderate hacking on Makefile.shlib (certainly it'd be no more invasive than the existing Windows-specific platform variants). However, looking at what's already in Makefile.shlib for AIX makes me doubt the above claim a bit, because AFAICS libpq.so is produced from libpq.a on that platform. Is it possible that the rules have changed across AIX versions, and that the code in there now is needful for older versions? Another issue with installing only .a is that there's no provision for versioning in .a library names ... what happens to someone who needs two generations of libpq on his machine? regards, tom lane ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster
Re: AIX shared libraries (was Re: [PATCHES] [HACKERS] Fix linking of OpenLDAP libraries)
Tom Lane wrote: The natural way in AIX would be: - Create libpq.so - Create libpq.a by 'rm -f libpq.a; ar -rc libpq.a libpq.so' - Install only libpq.a Hm. This seems possible with some moderate hacking on Makefile.shlib (certainly it'd be no more invasive than the existing Windows-specific platform variants). However, looking at what's already in Makefile.shlib for AIX makes me doubt the above claim a bit, because AFAICS libpq.so is produced from libpq.a on that platform. Is it possible that the rules have changed across AIX versions, and that the code in there now is needful for older versions? I don't think that this behaviour has changed. I remember it from AIX 4.3.2. Of course libpq.so is created from (the static) libpq.a. But once you have the dynamic library, you can link statically against it. Another issue with installing only .a is that there's no provision for versioning in .a library names ... what happens to someone who needs two generations of libpq on his machine? Use different directories and set LIBPATH? I don't know if there is a canonical way to do that. I'll investigate. Yours, Laurenz Albe ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
