[GEM-dev] undefined symbol: __sync_fetch_and_add_4

[Hans-Christoph Steiner]

On Jun 29, 2011, at 3:43 AM, IOhannes m zmoelnig wrote:

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> On 2011-06-27 21:12, Hans-Christoph Steiner wrote:
>>
>> In the process of fixed Pd-extended 0.43.1, I just found that on
>> Ubuntu/Maverick, Gem says this once I start Pd-extended:
>>
>> /usr/lib/pd-extended/extra/Gem/Gem.pd_linux:
>> /usr/lib/pd-extended/extra/Gem/Gem.pd_linux: undefined symbol:
>> __sync_fetch_and_add_4
>> Gem: can't load library
>>
>
> according to the internet, this is a problem of the "-march=i386" flag
> you are passing as CXXFLAGS.


What if I switched the OPT_FLAGS from:
	OPT_CFLAGS += -mtune=i686 -march=i386
to:
	OPT_CFLAGS += -march=pentium3 -msse -mfpmath=sse

The Pentium 3 came out in 1999, so that's quite old.  For supporting  
older computers, people could use the official Debian/Ubuntu packages.

.hc

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