Hi,
I am currently trying to cross compile Gnash 0.8.3 for an ARM processor
and uClibc 0.9.29 using buildroot (gcc 4.2.3).
The Gnash build progresses quite a long way, but then I get the
following errors whilst linking:
../server/.libs/libgnashserver.so: undefined reference to
`__sync_add_and_fetch_4'
../server/.libs/libgnashserver.so: undefined reference to
`__sync_fetch_and_add_4'
When I do
nm server/.libs/BitmapMovieInstance.o
I see, as part of the output:
000002f8 r _ZZNSt4fposI11__mbstate_tEC1ExE6C.1234
U _ZdlPv
U _Znwj
U __assert
U __cxa_allocate_exception
U __cxa_begin_catch
U __cxa_end_catch
U __cxa_pure_virtual
U __cxa_rethrow
U __cxa_throw
U __gxx_personality_sj0
U __sync_add_and_fetch_4
U __sync_fetch_and_add_4
U atof
U memcpy
U pthread_mutex_destroy
U pthread_mutex_init
U pthread_mutex_lock
U pthread_mutex_unlock
I had a similar problem when cross-compiling boost and discovered that
that problem was caused because the atomic builtin __sync_fetch_and_add
is not supported by gcc on ARM.
The question is, is this being caused by me not setting something during
the gnash cross-configure/compile (if so what?), or is there really a
problem in gnash that stops it being built for my configuration, or have
I made some more fundamental mistake?
Thanks in advance for your help,
Richard.
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