# No rule to make target '../seq/ff-c++', needed by 'MUMPS.so'

**URL:** <https://community.freefem.org/t/no-rule-to-make-target-seq-ff-c-needed-by-mumps-so/59>\
**Category:** FreeFEM installation\
**Created:** [May 27, 2019, 12:25pm UTC](https://community.freefem.org/t/no-rule-to-make-target-seq-ff-c-needed-by-mumps-so/59 "2019-05-27T12:25:29Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![caliari](https://avatars.discourse-cdn.com/v4/letter/c/7bcc69/32.png) [@caliari](https://community.freefem.org/u/caliari)\
**Post date:** [May 27, 2019, 12:25pm UTC](https://community.freefem.org/t/no-rule-to-make-target-seq-ff-c-needed-by-mumps-so/59/1 "2019-05-27T12:25:30Z")

</div>

Hi,

I tried to install FreeFem++ 4.1 in Mint 19.1 (Ubuntu 18.04 derivative) and the make process stopped with

> Making all in mpi  
> make[3]: Entering directory ‘/usr/local/src/FreeFem-sources-4.1/plugin/mpi’  
> make[3]: \*\*\* No rule to make target ‘…/seq/ff-c++’, needed by ‘MUMPS.so’. Stop.

So, ff-c++ was needed before it was created. I modified the first line in plugin/Makefile.am into

> SUBDIRS=ffddm seq mpi hpddm

and now make works fine.

Marco

---

<div class="post-metadata">

**Author:** ![frederichecht](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/frederichecht/32/15_2.png) [@frederichecht](https://community.freefem.org/u/frederichecht)\
**Post date:** [June 12, 2019, 5:08pm UTC](https://community.freefem.org/t/no-rule-to-make-target-seq-ff-c-needed-by-mumps-so/59/2 "2019-06-12T17:08:06Z")

</div>

This file is create in directory plugin/seq  
make ff-c++