multiple definition of `atan2l' on the current Cygwin

Marco Atzeri marco.atzeri@gmail.com
Wed Apr 13 17:26:00 GMT 2016


On 13/04/2016 18:55, René Berber wrote:
> On 4/12/2016 7:08 PM, Tatsuro MATSUOKA wrote:
>
> [snip]
>> /usr/lib/gcc/x86_64-pc-cygwin/5.3.0/libstdc++.dll.a(d005836.o):(.text+0x0):
>> multiple definition of `atan2l'
>> ******************************************
>> /usr/lib/../lib/libm.a(t-d000195.o):fake:(.text+0x0): first defined
>> here
>
> Those lines point to the double definition very clearly.
>
> In Linux, libstdc++ doesn't include atan2l, only libm has it.  The
> question then is: why is libstdc++ different?
>

likely because it was built before that libm had it.
Only latest cygwin 2.5.0 has it.

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