Testing __float128

Angelo Graziosi angelo.graziosi@alice.it
Wed Sep 1 14:23:00 GMT 2010


FX wrote:
> ** How to build? **
>
>   -- Get the latest libquad from http://quatramaran.ens.fr/~coudert/tmp/libquad.tar.bz2 , then ./configure --prefix=/foo && make && make install

Out of curiosity, I tried this on Cygwin, and obviously:

$ ./configure --prefix=/tmp/foo && make && make install
[...]
checking whether __float128 is supported... no
configure: error: __float128 support is required to build this library.

So, what does Cygwin people need to have QP with gfortran?

I have tried to build libquad with gcc-4.3.4 (from Cygwin packages) and 
with gcc-4.6 (my build of the last snapshot).

I haven't understood if it regards Cygwin itself or GCC with which 
libquad should be build...

Thanks,
Angelo.



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