Compiling a program

hi to all !
i have a problem when i compile a program
the error is:
ld: elf error: file /export/soft/linpack/hpl/lib/Sun_Ultra20/libhpl.a(HPL_dlamch.o): elf_getshdr: Request error: class file/memory mismatch
ld: elf error: file /export/soft/linpack/hpl/lib/Sun_Ultra20/libhpl.a(HPL_dlamch.o): elf_getshdr: Request error: class file/memory mismatch
ld: fatal: file /opt/SUNWhpc/lib/libmpi.so: wrong ELF class: ELFCLASS32
tell me someone what does it mean and what can i do
thanks

This problem is happened with Solaris 10 and Sun Studio compile with 64bit. You get compile error or dbx will crash when you debug the program.
Two correct solutions are to have all the Solaris 10 libraries affected by this bug patched or upgrade your system to Solaris 10 update 1. We have patches for our Sun Studio libraries
SPARC platforms:
119963-04 (Shared library patch for C++)
120753-02 (libmtsk patch)
x86 platforms:
119964-05 (Shared library patch for C++)
120754-02 (libmtsk patch)
But We strongly suggest you to upgrade your OS system to Solaris 10 update 1 or later.
In the mean time, if you can not do either 2 correct solutions above (means you have to stay with Solaris 10 and can't patch all the libraries), Sun Studio dbx group produced dbx patches as a work around solution for this crash problem.
If you have Sun Studio 11, install dbx patch 121023 for SPARC and 121616 for x86
If you have Sun Studio 10, install dbx patch 117844-04 for SPARC and 117845-04 for x86
-Ngoc

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