# Pb installation on Ubuntu 25.10

**URL:** <https://community.freefem.org/t/pb-installation-on-ubuntu-25-10/4185>\
**Category:** FreeFEM installation\
**Created:** [January 12, 2026, 9:06pm UTC](https://community.freefem.org/t/pb-installation-on-ubuntu-25-10/4185 "2026-01-12T21:06:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tfisk98](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/tfisk98/32/3567_2.png) [@tfisk98](https://community.freefem.org/u/tfisk98)\
**Post date:** [January 12, 2026, 9:06pm UTC](https://community.freefem.org/t/pb-installation-on-ubuntu-25-10/4185/1 "2026-01-12T21:06:14Z")

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Dear all,

I have installed FreeFem using both Ubuntu links and it appears that the FreeFem application won’t launch because there is a problem of missing dependencies :

FreeFem++: error while loading shared libraries: libhdf5\_serial.so.103: cannot open shared object file: No such file or directory

I tried linking files with :

cd /usr/lib

sudo ln -srv ./x86\_64-linux-gnu/libhdf5\_serial.so.310 libhdf5\_serial.so.103

But no success,

Thomas

but no success

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**Author:** ![prj](https://avatars.discourse-cdn.com/v4/letter/p/ecae2f/32.png) [@prj](https://community.freefem.org/u/prj)\
**Post date:** [January 13, 2026, 5:28am UTC](https://community.freefem.org/t/pb-installation-on-ubuntu-25-10/4185/2 "2026-01-13T05:28:32Z")

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Try compiling from sources. If you had already done so, add the configure option `--without-hdf5`.