On Mon, Apr 13, 2020 at 7:40 PM Darij Grinberg <darijgrinb...@gmail.com> wrote:
>
> Trying to build sage 9.1.rc0 on a freshly updated cygwin, I'm getting this:

after a Cygwin update one has to

make distclean

Have you done this?
If yes, and still getting this error, please post here
/home/skraeling/sage/local/var/tmp/sage/build/ecm-7.0.4.p1/src/config.log


>
> [ecm-7.0.4.p1] checking whether we can link against GMP... yes
> [ecm-7.0.4.p1] checking if gmp.h version and libgmp version are the same... 
> (6.1.2/6.2.0) no
> [ecm-7.0.4.p1] configure: error: 'gmp.h' and 'libgmp' have different 
> versions, you have to reinstall GMP properly, or use the --with-gmp parameter 
> to tell configure the path to the GMP library and header you want to use
> [ecm-7.0.4.p1] 
> ************************************************************************************************************************
> [ecm-7.0.4.p1] Error configuring ecm-7.0.4.p1
> [ecm-7.0.4.p1] See the file
> [ecm-7.0.4.p1]     
> /home/skraeling/sage/local/var/tmp/sage/build/ecm-7.0.4.p1/src/config.log
> [ecm-7.0.4.p1] for details.
> [ecm-7.0.4.p1] 
> ************************************************************************************************************************
> [ecm-7.0.4.p1]
> [ecm-7.0.4.p1] real     2m20.317s
> [ecm-7.0.4.p1] user     0m37.282s
> [ecm-7.0.4.p1] sys      0m56.531s
> [ecm-7.0.4.p1] 
> ************************************************************************
> [ecm-7.0.4.p1] Error installing package ecm-7.0.4.p1
> [ecm-7.0.4.p1] 
> ************************************************************************
>
> This looks more like a cygwin error or an issue with outdated files in my 
> local, but I don't understand gmp enough to mess with it. Is there an 
> installation flag for this?
>
> Best regards,
> Darij
>
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