# Error building RootsFortran

**URL:** <https://fortran-lang.discourse.group/t/error-building-rootsfortran/10773>\
**Category:** fpm\
**Created:** [March 10, 2026, 9:26pm UTC](https://fortran-lang.discourse.group/t/error-building-rootsfortran/10773 "2026-03-10T21:26:56Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rgaelzer](https://avatars.discourse-cdn.com/v4/letter/r/8491ac/32.png) [@rgaelzer](https://fortran-lang.discourse.group/u/rgaelzer)\
**Post date:** [March 10, 2026, 9:26pm UTC](https://fortran-lang.discourse.group/t/error-building-rootsfortran/10773/1 "2026-03-10T21:26:56Z")

</div>

I just downloaded the latest release (1.5.0) of RootsFortran from

> **[GitHub - jacobwilliams/roots-fortran: A modern Fortran library for finding the roots of...](https://github.com/jacobwilliams/roots-fortran)**
>
> A modern Fortran library for finding the roots of continuous scalar functions of a single real variable, using derivative-free methods.

After uncompressing the master and running

fpm build –profile release

I got the error message:

Initialized empty Git repository in /home/rudi/comp/for/Libraries/GitHub/jacobwilliams/RootsFortran/roots-fortran-maste  
r/build/dependencies/FACE/.git/  
remote: Enumerating objects: 61, done.  
remote: Counting objects: 100% (61/61), done.  
remote: Compressing objects: 100% (55/55), done.  
remote: Total 61 (delta 4), reused 35 (delta 1), pack-reused 0 (from 0)  
Unpacking objects: 100% (61/61), 188.34 KiB | 1.67 MiB/s, done.  
From [GitHub - szaghi/FACE: Fortran Ansi Colors (and Styles) Environment · GitHub](https://github.com/szaghi/FACE)  
\* branch HEAD → FETCH\_HEAD

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:  
#0 0x7f4bf3409055 in ???  
#1 0x7f4bf3408045 in ???  
#2 0x7f4bf30eb28f in ???  
#3 0x417ac7 in \_\_fpm\_MOD\_build\_model  
at ./src/fpm.f90:118  
#4 0x41e30f in \__fpm\_MOD\_cmd\_build  
at ./src/fpm.f90:296  
 #5 0x402b30 in MAIN_\_  
at app/main.f90:72  
#6 0x40241c in main  
at app/main.f90:11  
Segmentation fault (core dumped) fpm build --profile release

My system has fpm version 0.6.0 alpha installed from snap. Do I need a newer version of fpm?

Thanks.

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<div class="post-metadata">

**Author:** ![RJaBi](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/rjabi/32/5161_2.png) [@RJaBi](https://fortran-lang.discourse.group/u/RJaBi)\
**Post date:** [March 10, 2026, 11:09pm UTC](https://fortran-lang.discourse.group/t/error-building-rootsfortran/10773/2 "2026-03-10T23:09:25Z")

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fpm 0.6.0 is from almost 4 years ago so it seems a reasonable first check.

I had no issues with fpm 0.12.0 and gfortran 11.4 just now (windows subsystem linux ubuntu).

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<div class="post-metadata">

**Author:** ![rgaelzer](https://avatars.discourse-cdn.com/v4/letter/r/8491ac/32.png) [@rgaelzer](https://fortran-lang.discourse.group/u/rgaelzer)\
**Post date:** [March 10, 2026, 11:39pm UTC](https://fortran-lang.discourse.group/t/error-building-rootsfortran/10773/3 "2026-03-10T23:39:20Z")

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OK, will update fpm and try again.

The preferred installation method is via conda-forge?