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  Hi.

  I tried to compile C-code of my application under IRIX5.2 using
  the same Gmakefile and environment variables as used before
  under IRIX4.x. Compiler created all object files, but ld
  gave the following Error message:

ld:
Object file format error in:
/Users1/lopresti/sergeyva/grass/src/libes/LIB.sgi/
libvect.a(open.o): cannot mix Elf and COFF objects.
*** Error code 1 (bu21)

  Could you, please, tell me what Elf and COFF objects are, and
  what should be fixed in that situation?

  -Vitaly Brukhman