Tuesday, April 1, 2008

64bit Firebird for Solaris 10 AMD64

Looks like having a 64bit build of Firebird on Solaris 10 AMD64 is going to be a non-starter.
Alex and I have done all the hard work, and we have a build (currently without editline, since thats a problem in itself), but when we try and run isql created by the build we get the following:

ld.so.1: ./isql: fatal: relocation error: R_AMD^$_32S:
file /usr/lib/64/libfbembed.so.2: symbol (unknown): vakue 0xfffffd7ffee00000
does not fit

or in debug mode trying to run isql from the build directly:
ld.so.1: isql: fatal: relocation error: R_AMD64_PC32
file /home/pbeach/firebird64/gen/firebird/lib/libfbembed.so.2:
symbol main: value 0x2800155d494 does not fit.

A bit of googling finds this:

Bug ID 5102797
Synopsis AMD64: static relocation in dynamic library fails

If you read the details, seems the bug has been around since 15th Sept 2004
and because of its nature, there are no plans to fix it until Solaris 11.

Addendum: 2nd April 2007
Looks like we have found the problem.
LIB_LINK_OPTIONS in the prefix build file was -G
-G on Solaris should tell the linker to create a shared library
However because we are using gcc, something somewhere was getting confused.
If we pass -fPIC and -shared instead the problem is resolved.

From the gcc manaual:


Produce a shared object which can then be linked with other objects to form an executable. Not all systems support this option. For predictable results, you must also specify the same set of options that were used to generate code (-fpic, -fPIC, or model suboptions) when you specify this option

On some systems, `gcc -shared' needs to build supplementary stub code for constructors to work. On multi-libbed systems, `gcc -shared' must select the correct support libraries to link against. Failing to supply the correct flags may lead to subtle defects. Supplying them in cases where they are not necessary is innocuous.

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