[R-pkg-devel] Fixing travis build fail due to fftwtools fatal error (fftw3.h: No such file or directory)

Max Turgeon M@x@Turgeon @end|ng |rom um@n|tob@@c@
Thu Sep 10 04:27:12 CEST 2020

Hi Marta,

One change I can see from your Git history that seems to match the first failed build on Travis is when you added "Imports: fftwtools" to your DESCRIPTION file. And it makes sense, because if we look at its DESCRIPTION file, we can see that it has fftw3 as a SystemRequirements. In other words, it needs to be installed on Travis before you can run the checks on your package.

As for solutions, I can see that Karim wrote a short description of how to install the library on Linux, and there's a link for Mac; all this is on the Github repo: https://github.com/krahim/fftwtools

I also noticed that there is an R package wrapping fftw on CRAN (https://cran.r-project.org/package=fftw) and I can see that it's a Suggested package for fftwtools. I haven't tried it, but presumably you could install the fftw R package, instead of the fftw3 library.


Max Turgeon
Assistant Professor
Department of Statistics
Department of Computer Science
University of Manitoba

From: R-package-devel <r-package-devel-bounces using r-project.org> on behalf of Marta Kara� <marta.karass using gmail.com>
Sent: Wednesday, September 9, 2020 9:09 PM
To: package-develop <r-package-devel using r-project.org>
Cc: karim.rahim using queensu.ca <karim.rahim using queensu.ca>
Subject: [R-pkg-devel] Fixing travis build fail due to fftwtools fatal error (fftw3.h: No such file or directory)

Caution: This message was sent from outside the University of Manitoba.

Dear all,

I have been facing travis build fail on linux xenial due to *fftwtools
fatal error* (fftw3.h: No such file or directory) with my R package. The
error appeared at a random time a few months ago (at a random time := I do
not link it with any fftwtools-function related change commit I did) and

There is not much I achieved in googling and trying to decipher it, sadly;
I am hoping maybe some Community members saw a similar error with their dev
work and can suggest a hint/solution?

Package GitHub: https://github.com/martakarass/runstats
Failed Travis job log:

Error excerpt:

* installing *source* package �fftwtools� ...
** package �fftwtools� successfully unpacked and MD5 sums checked
** using staged installation
** libs
gcc -I"/opt/R/4.0.2/lib/R/include" -DNDEBUG   -I/usr/local/include   -fpic
 -g -O2  -c fftwtools.c -o fftwtools.o
fftwtools.c:28:18: fatal error: fftw3.h: No such file or directory
compilation terminated.
/opt/R/4.0.2/lib/R/etc/Makeconf:167: recipe for target 'fftwtools.o' failed
make: *** [fftwtools.o] Error 1
ERROR: compilation failed for package �fftwtools�
* removing �/home/travis/R/Library/fftwtools�
Error in i.p(...) :
  (converted from warning) installation of package �fftwtools� had non-zero
exit status
Calls: <Anonymous> ... with_rprofile_user -> with_envvar -> force -> force
-> i.p
Execution halted
The command "Rscript -e 'deps <- remotes::dev_package_deps(dependencies =
NA);remotes::install_deps(dependencies = TRUE);if (!all(deps$package %in%
installed.packages())) { message("missing: ", paste(setdiff(deps$package,
installed.packages()), collapse=", ")); q(status = 1, save = "no")}'"
failed and exited with 1 during .
Your build has been stopped.

Thank you,


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