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Date:	Fri, 27 Mar 2009 15:09:00 -0500
From:	"Yaakov (Cygwin/X)" <yselkowitz AT users DOT sourceforge DOT net>
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Subject:	gcc4: missing atomic builtins?
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Dave,

Building djvulibre-3.5.21 with gcc4, while linking libdjvulibre:

.libs/atomic.o:atomic.cpp:(.text+0x3b): undefined reference to
`___sync_bool_compare_and_swap_4'
.libs/atomic.o:atomic.cpp:(.text+0x65): undefined reference to
`___sync_add_and_fetch_4'

Some googling shows that the culprit *may be* gcc4:

http://sourceware.org/ml/crossgcc/2008-06/msg00022.html

Any ideas?


Yaakov
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