How to generate 64bit binaries with gcc on HP.11.00?

[Alpman, Johan]

Hi,

I use HP.11.00  with gcc-3.0.2
I receive an error message when I try to build a binary,
using a library, compiled on different machine also HP.11.00

/usr/ccs/bin/ld: /home/jalpman/VIP/project//lib/hpux11.x/libbat.a: Not a
valid library (invalid magic number). Possibly a 64-bit PA archive library
(Mismatched ABI).
collect2: ld returned 1 exit status

I assume this problem is due to the fact that we build 32 bit binaries,
and try to link in a 64-bit library.
How do I do to generate a 64 bit binary with gcc.

When I tried the  -m64 option, I received cc1: Invalid option `64' 

Best Regards
Johan Alpman

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