>It gets as far as making "gdb", but it falls flat when compiling the file
>"trad-core.c" (in /usr/src/gnu/usr.bin/gdb/bfd/).

`trad-core.c' is thoroughly wrong for the sparc.  You should find several
sparc-specific files in the bfd tree, none of which are right either....

Still using gdb 4.4,

Chris

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