Compiling mex on Linux/Ubuntu - Could NOT find MPFR and other issues about gptoolbox

[alecjacobson]

I think you might need to do something like sudo apt-get install mpfr gmp

[alecjacobson]

I did it recently and vaguely remember that CGAL makes it cumbersome to tell it where to find MPFR and gmp. I'll dig through my command history to see if I can find what I did.

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[alecjacobson]

I found this: cmake ../ -DCMAKE_BUILD_TYPE=Release -DGMP_INCLUDE_DIR=`pwd`/../external/gmp-6.2.0 -DGMP_LIBRARIES=`pwd`/../external/gmp-6.2.0/build/lib/libgmp.so -DMPFR_INCLUDE_DIR=`pwd`/../external/mpfr-4.0.2/build/include -DMPFR_LIBRARIES=`pwd`/../external/mpfr-4.0.2/build/lib/libmpfr.a -DLIBIGL_WITH_CGAL=ON

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On Sun, Jul 18, 2021 at 5:12 PM Alec Jacobson ***@***.***> wrote: I did it recently and vaguely remember that CGAL makes it cumbersome to tell it where to find MPFR and gmp. I'll dig through my command history to see if I can find what I did. >

[alecjacobson]

I think I was on a machine where I couldn't use apt-get so I downloaded/installed mpfr and gmp in the external folder of libigl. Maybe this also works if you point it to /usr/local/ or wherever your mpfr gmp are .

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[albertotono]

Thank you so much for the quick reply.
yes, I used the
sudo apt-get install libmpfr-dev
and sudo apt-get install libgmp-dev
before.

Do you know someone who have already compiled mex on Linux successfully?

[albertotono]

Thank you so much.

Yes, now I don't have that error about MPFR anymore

I had also a conflict with different boost version before ( one in anaconda and another one 1.70 and 1.76) . I was able to solve that (mayybe)

Now the build folder looks like this

and the external

Not sure what is the specific error that I am getting.
CMakeError.log
CMakeOutput.log

as far as I am reading the pthread shouldn't be an issue

Would you be able to share your notes with us about the linux installation?

We are doing our best to make sure students will be able to install it as well https://github.com/odedstein/sgi-introduction-course/blob/main/205_mex/compilation_instructions.md.

Any help would be much appreciated.

[albertotono]

It seems it was missing also this

sudo apt-get install liblapack-dev

Using cmake-gui
It seems working now

also on make

[alecjacobson]

ooffff. Glad you made it through. If you have a suggestion of how to give better instructions for linux uses, please share.