Thomas Hallgren wrote:
Problem:
PL/Java use a JVM. On some platforms and with some JVM's (Sun's in particular) a libzip.so is bundled that contains a 1.1.3 version of functions also provided in zlib (why they do this is beyond me, but they do so I'll have to live with it). PostgreSQL is linked with zlib by default. This resuls in a conflict which resuls in a JVM crash.
I can circumvein this crash by using LD_PRELOAD to force a load of the JVM bundled libzip.so but I suspect that might result in a crash as soon as PostgreSQL calls on zlib to do something. It's of course possible to configure postgresql with --without-zlib also provided you have accesst o the source.
Question:
From what I can understand from the documentation, the only utility in PostgreSQL that actually uses zlib is pg_dump? If so, why is the postgres process linked with -lz?
I did a small experiment by installing binutils 2.15 and adding -Wl,--as-needed to the LDFLAGS, as Tom had suggested might be useful.
This seemed to work quite well and trimmed back the needed libs quite a bit. However, when you configure --with-openssl, libz is again linked in.
Not sure where that leaves us.
cheers
andrew
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