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

8 messages · Karim Rahim, Marta Karaś, Dirk Eddelbuettel

#
sudo apt-get install -y fftw3

Then try again.

Let me know if it doesn't work.

Cheers!
Karim
On Wed, Sep 9, 2020 at 10:27 PM Max Turgeon <Max.Turgeon at umanitoba.ca> wrote:
#
On 9 September 2020 at 23:45, Karim Rahim wrote:
|  sudo apt-get install -y fftw3

Or maybe rather

   sudo apt-get install libfftw3-dev

to get the development headers?

Dirk
 
| Then try again.
| 
| Let me know if it doesn't work.
| 
| Cheers!
| Karim
|
| On Wed, Sep 9, 2020 at 10:27 PM Max Turgeon <Max.Turgeon at umanitoba.ca> wrote:
| >
| > 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.
| >
| > HTH,
| >
| > Max Turgeon
| > Assistant Professor
| > Department of Statistics
| > Department of Computer Science
| > University of Manitoba
| > maxturgeon.ca
| >
| >
| >
| > ________________________________
| > From: R-package-devel <r-package-devel-bounces at r-project.org> on behalf of Marta Kara? <marta.karass at gmail.com>
| > Sent: Wednesday, September 9, 2020 9:09 PM
| > To: package-develop <r-package-devel at r-project.org>
| > Cc: karim.rahim at queensu.ca <karim.rahim at 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
| > persists.
| >
| > 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:
| > https://travis-ci.com/github/martakarass/runstats/jobs/383037333
| >
| > 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,
| >
| > Marta
| >
| >         [[alternative HTML version deleted]]
| >
| > ______________________________________________
| > R-package-devel at r-project.org mailing list
| > https://stat.ethz.ch/mailman/listinfo/r-package-devel
| 
| ______________________________________________
| R-package-devel at r-project.org mailing list
| https://stat.ethz.ch/mailman/listinfo/r-package-devel
#
Thanks,

That may be it. It is a missing dependency.

It's been a while and I'm not sure which package exposes fftw3.h ...

Karim
On Thu, Sep 10, 2020 at 8:16 AM Dirk Eddelbuettel <edd at debian.org> wrote:

            

  
  
#
Adding the following to .travis.yml:

before_install:
  - if [ "$TRAVIS_OS_NAME" = "linux" ]; then sudo apt-get -y install
libfftw3-dev ; fi

did the trick!

Thank you both for your attention to this issue!

Bests,
Marta Karas
On Thu, Sep 10, 2020 at 8:35 AM Karim Rahim <karim.rahim at gmail.com> wrote:

            

  
  
#
On 10 September 2020 at 14:14, Marta Kara? wrote:
| Adding the following to .travis.yml:
| 
| before_install:
|   - if [ "$TRAVIS_OS_NAME" = "linux" ]; then sudo apt-get -y install
| libfftw3-dev ; fi
| 
| did the trick!

I think that is an example of the issue discussed in this blog post:
  http://dirk.eddelbuettel.com/blog/2020/08/26#029_introducing_bspm

The RSPM system gets you the package, but it is by its (on purpose simple)
design disconnected and unaware of the dependency required which sent you
down a rabbit hole. (One could also suggest that maybe Karim should expand
   SystemRequirements:	fftw3 (>= 3.1.2)
to maybe list the packages offering fftw3 _headers_. Jeroen uses a pattern
for this, eg curl has
   SystemRequirements:	libcurl: libcurl-devel (rpm) or libcurl4-openssl-dev (deb).
which is already one step better.)

Only systems with actual dependency resolution can go further, but it is hard
to do that cross-platform / cross-OS.  On Linux we have both BSPM utilising
the existing rpm and deb binaries, respectively, maintained by tireless
volunteers, as well as the older use of directly using the binaries.

Eg looking at the Ubuntu binary from the Rutter PPA shows that
r-cran-fftwtools will bring the fftw3 runtime in:

   docker at 08d894be427a:/work$ apt-cache show r-cran-fftwtools | grep ^Depends
   Depends: r-base-core, libfftw3-double3 (>= 3.3.5)
   docker at 08d894be427a:/work$ 

That would be an easier binary install as it skips the 'from source' build
step that sent Marta hunting for the required header.

If I find some time I will try to set up some Travis CI examples utilizing
BSPM.  Until then, one can do as I have done for over half a decade and point
Travis CI to these binaries via the (still maintained and simple) r-travis
setup.  Works for me.  See http://eddelbuettel.github.io/r-travis/  and
numerous .travis.yml in packages of mine and a few other users.

Dirk

| Thank you both for your attention to this issue!
| 
| Bests,
| Marta Karas
| 
| 
| 
| 
|
| On Thu, Sep 10, 2020 at 8:35 AM Karim Rahim <karim.rahim at gmail.com> wrote:
| 
| > Thanks,
| >
| > That may be it. It is a missing dependency.
| >
| > It's been a while and I'm not sure which package exposes fftw3.h ...
| >
| > Karim
| >
| > On Thu, Sep 10, 2020 at 8:16 AM Dirk Eddelbuettel <edd at debian.org> wrote:
| >
| >>
| >> On 9 September 2020 at 23:45, Karim Rahim wrote:
| >> |  sudo apt-get install -y fftw3
| >>
| >> Or maybe rather
| >>
| >>    sudo apt-get install libfftw3-dev
| >>
| >> to get the development headers?
| >>
| >> Dirk
| >>
| >> | Then try again.
| >> |
| >> | Let me know if it doesn't work.
| >> |
| >> | Cheers!
| >> | Karim
| >> |
| >> | On Wed, Sep 9, 2020 at 10:27 PM Max Turgeon <Max.Turgeon at umanitoba.ca>
| >> wrote:
| >> | >
| >> | > 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.
| >> | >
| >> | > HTH,
| >> | >
| >> | > Max Turgeon
| >> | > Assistant Professor
| >> | > Department of Statistics
| >> | > Department of Computer Science|
 >> | > University of Manitoba
| >> | > maxturgeon.ca
| >> | >
| >> | >
| >> | >
| >> | > ________________________________
| >> | > From: R-package-devel <r-package-devel-bounces at r-project.org> on
| >> behalf of Marta Kara? <marta.karass at gmail.com>
| >> | > Sent: Wednesday, September 9, 2020 9:09 PM
| >> | > To: package-develop <r-package-devel at r-project.org>
| >> | > Cc: karim.rahim at queensu.ca <karim.rahim at 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
| >> | > persists.
| >> | >
| >> | > 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:
| >> | > https://travis-ci.com/github/martakarass/runstats/jobs/383037333
| >> | >
| >> | > 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,
| >> | >
| >> | > Marta
| >> | >
| >> | >         [[alternative HTML version deleted]]
| >> | >
| >> | > ______________________________________________
| >> | > R-package-devel at r-project.org mailing list
| >> | > https://stat.ethz.ch/mailman/listinfo/r-package-devel
| >> |
| >> | ______________________________________________
| >> | R-package-devel at r-project.org mailing list
| >> | https://stat.ethz.ch/mailman/listinfo/r-package-devel
| >>
| >> --
| >> https://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
| >>
| >
#
Hi Dirk,

Thanks for resolving this! It's been awhile since I've worked on this...

So for dependencies, I'd like to keep it as simple as possible. I agree
fftw3 may need to be updated.

It's my understanding that if one were to install the latest fftw (3.3.8)
from source then it would expose the header file.

Is this incorrect?

If this is the case, then it becomes about the various distribution
specific packages.
So then I want to aim people in the right direction.

How about?

fftw3 (>= 3.1.2; ensure fftw3.h is exposed - libfftw3-dev in Ubuntu)

Kind Regards,
Karim
On Fri, Sep 11, 2020 at 11:20 AM Dirk Eddelbuettel <edd at debian.org> wrote:
libcurl4-openssl-dev (deb).
hard
utilising
^Depends
point
wrote:
wrote:
Max.Turgeon at umanitoba.ca>
the
to your
DESCRIPTION
words,
your
of
this
you
*fftwtools
package.
time :=
did)
it,
-I/usr/local/include
directory
'fftwtools.o'
had
force ->
(!all(deps$package
"no")}'"

  
  
#
Hi Karim,
On 11 September 2020 at 13:09, Karim Rahim wrote:
| Thanks for resolving this! It's been awhile since I've worked on this...
| 
| So for dependencies, I'd like to keep it as simple as possible. I agree
| fftw3 may need to be updated.
| 
| It's my understanding that if one were to install the latest fftw (3.3.8)
| from source then it would expose the header file.

Not necessarily and it depends on how the package is setup.

In general you want a '-dev' or '-devel' package but I do not know what this
one is called in the Fedora/RH/CentOS world.
 
| Is this incorrect?
| 
| If this is the case, then it becomes about the various distribution
| specific packages.
| So then I want to aim people in the right direction.
| 
| How about?
| 
| fftw3 (>= 3.1.2; ensure fftw3.h is exposed - libfftw3-dev in Ubuntu)

So per the above I would suggest you reconsider the curl example I emailed
earlier and do something like

  fftw3 development package: libfftw3-dev (deb), ..... (rpm)

Maybe someone can help with the rpm package name.

Cheers, Dirk

| 
| Kind Regards,
| Karim
| 
| 
| 
| 
|
| On Fri, Sep 11, 2020 at 11:20 AM Dirk Eddelbuettel <edd at debian.org> wrote:
| >
| >
| > On 10 September 2020 at 14:14, Marta Kara? wrote:
| > | Adding the following to .travis.yml:
| > |
| > | before_install:
| > |   - if [ "$TRAVIS_OS_NAME" = "linux" ]; then sudo apt-get -y install
| > | libfftw3-dev ; fi
| > |
| > | did the trick!
| >
| > I think that is an example of the issue discussed in this blog post:
| >   http://dirk.eddelbuettel.com/blog/2020/08/26#029_introducing_bspm
| >
| > The RSPM system gets you the package, but it is by its (on purpose simple)
| > design disconnected and unaware of the dependency required which sent you
| > down a rabbit hole. (One could also suggest that maybe Karim should expand
| >    SystemRequirements:  fftw3 (>= 3.1.2)
| > to maybe list the packages offering fftw3 _headers_. Jeroen uses a pattern
| > for this, eg curl has
| >    SystemRequirements:  libcurl: libcurl-devel (rpm) or
| libcurl4-openssl-dev (deb).
| > which is already one step better.)
| >
| > Only systems with actual dependency resolution can go further, but it is
| hard
| > to do that cross-platform / cross-OS.  On Linux we have both BSPM
| utilising
| > the existing rpm and deb binaries, respectively, maintained by tireless
| > volunteers, as well as the older use of directly using the binaries.
| >
| > Eg looking at the Ubuntu binary from the Rutter PPA shows that
| > r-cran-fftwtools will bring the fftw3 runtime in:
| >
| >    docker at 08d894be427a:/work$ apt-cache show r-cran-fftwtools | grep
| ^Depends
| >    Depends: r-base-core, libfftw3-double3 (>= 3.3.5)
| >    docker at 08d894be427a:/work$
| >
| > That would be an easier binary install as it skips the 'from source' build
| > step that sent Marta hunting for the required header.
| >
| > If I find some time I will try to set up some Travis CI examples utilizing
| > BSPM.  Until then, one can do as I have done for over half a decade and
| point
| > Travis CI to these binaries via the (still maintained and simple) r-travis
| > setup.  Works for me.  See http://eddelbuettel.github.io/r-travis/  and
| > numerous .travis.yml in packages of mine and a few other users.
| >
| > Dirk
| >
| > | Thank you both for your attention to this issue!
| > |
| > | Bests,
| > | Marta Karas
| > |
| > |
| > |
| > |
| > |
| > | On Thu, Sep 10, 2020 at 8:35 AM Karim Rahim <karim.rahim at gmail.com>
| wrote:
| > |
| > | > Thanks,
| > | >
| > | > That may be it. It is a missing dependency.
| > | >
| > | > It's been a while and I'm not sure which package exposes fftw3.h ...
| > | >
| > | > Karim
| > | >
| > | > On Thu, Sep 10, 2020 at 8:16 AM Dirk Eddelbuettel <edd at debian.org>
| wrote:
| > | >
| > | >>
| > | >> On 9 September 2020 at 23:45, Karim Rahim wrote:
| > | >> |  sudo apt-get install -y fftw3
| > | >>
| > | >> Or maybe rather
| > | >>
| > | >>    sudo apt-get install libfftw3-dev
| > | >>
| > | >> to get the development headers?
| > | >>
| > | >> Dirk
| > | >>
| > | >> | Then try again.
| > | >> |
| > | >> | Let me know if it doesn't work.
| > | >> |
| > | >> | Cheers!
| > | >> | Karim
| > | >> |
| > | >> | On Wed, Sep 9, 2020 at 10:27 PM Max Turgeon <
| Max.Turgeon at umanitoba.ca>
| > | >> wrote:
| > | >> | >
| > | >> | > 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.
| > | >> | >
| > | >> | > HTH,
| > | >> | >
| > | >> | > Max Turgeon
| > | >> | > Assistant Professor
| > | >> | > Department of Statistics
| > | >> | > Department of Computer Science|
| >  >> | > University of Manitoba
| > | >> | > maxturgeon.ca
| > | >> | >
| > | >> | >
| > | >> | >
| > | >> | > ________________________________
| > | >> | > From: R-package-devel <r-package-devel-bounces at r-project.org> on
| > | >> behalf of Marta Kara? <marta.karass at gmail.com>
| > | >> | > Sent: Wednesday, September 9, 2020 9:09 PM
| > | >> | > To: package-develop <r-package-devel at r-project.org>
| > | >> | > Cc: karim.rahim at queensu.ca <karim.rahim at 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
| > | >> | > persists.
| > | >> | >
| > | >> | > 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:
| > | >> | > https://travis-ci.com/github/martakarass/runstats/jobs/383037333
| > | >> | >
| > | >> | > 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,
| > | >> | >
| > | >> | > Marta
| > | >> | >
| > | >> | >         [[alternative HTML version deleted]]
| > | >> | >
| > | >> | > ______________________________________________
| > | >> | > R-package-devel at r-project.org mailing list
| > | >> | > https://stat.ethz.ch/mailman/listinfo/r-package-devel
| > | >> |
| > | >> | ______________________________________________
| > | >> | R-package-devel at r-project.org mailing list
| > | >> | https://stat.ethz.ch/mailman/listinfo/r-package-devel
| > | >>
| > | >> --
| > | >> https://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
| > | >>
| > | >
| >
| > --
| > https://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
#
Hello,

There is only one fftw3 tar.gz  file that I see.

http://www.fftw.org/download.html

Once built it provides headers and static libraries to use fftw3 in cpp.

For an example of how it's used in cpp see:
http://www.fftw.org/fftw3_doc/Complex-One_002dDimensional-DFTs.html#Complex-One_002dDimensional-DFTs

As a general rule, you will need header files and to compile cpp code
using libraries.

This package basically provides a wrapper for fftw3 cpp routines. I
wrote it so I could easily swap fftw for fft in my multitaper package.

Ok I looked at the curl dependencies on the cran page.

If I do something similar, I would have:
libfftw3-dev (deb)
fftw-devel (rpm)

The documentation for these two packages state these contain the
header files and static libraries.

https://packages.debian.org/stretch/libfftw3-dev
http://rpmfind.net/linux/rpm2html/search.php?query=fftw-devel

I don't expect to rush this update, and I would appreciate
confirmation before doing this from a redhat user.

I appreciate that this is of use. I get less comments about this than
multitaper.

Kind regards,
Karim
On Fri., Sep. 11, 2020, 19:54 Dirk Eddelbuettel, <edd at debian.org> wrote: