Dear Magdalena, Thank you for the reply and giving me the energy to revisit the problem.
I will try building without BLAS support then report back here. Bye for now. Gerald. On Thu, 2026-01-22 at 01:44 -0800, Magdalena wrote: > Dear Gerald, > I am encountering the same issue with p4est 2.3.6 (the version used > in candi). I am building on Manjaro with GCC 15.2.1 (20250813). It > could be that this problem did not occur with earlier compiler > versions (as I definitely compiled p4est successfully couple of > months ago). > The issue appears to be related to the p4est configuration used by > deal.II, specifically here: > https://github.com/dealii/dealii/blob/3ab62bd61ec7ac3221bcca757474cf2bc3c520a8/doc/external-libs/p4est-setup.sh#L120 > In this script, deal.II explicitly forces p4est to be built without > BLAS support. I do not fully understand why this is required (perhaps > Bruno knows the rationale), but if I remove this option, the build > succeeds. This makes me suspect a faulty or outdated implementation > in p4est related to the --without-blas flag, which may be exposed by > newer compilers. > Best, > Magdalena > > [email protected] schrieb am Mittwoch, 7. Januar 2026 um 15:15:38 > UTC+1: > > Dear BB, > > > > Thank you for the email. > > > > I'm still on my way back home from a holiday trip. I'll give your > > advice a try as soon as I have access to me machine. > > > > Bye for now, > > > > Gerald > > > > Gerald Marewo > > Cell: +27(71)705 0830, Email: [email protected] > > > > > > > > On Mon, 5 Jan 2026, 10:35 [email protected], <[email protected]> > > wrote: > > > Dear Gerald, > > > A quick question, did you clean your candi installation folder > > > after installing BLAS and restarting the process? Just to be > > > sure. Sometimes if you do not clean the install and add new > > > libraries, the new libraries are not detected adequately. > > > Otherwise, I am not sure what is the exact issue right now. I > > > have never encountered this problem. > > > If you try to compile p4est as a standalone library on the side, > > > do you get the same error? > > > > > > > > > On Saturday, December 27, 2025 at 10:23:08 a.m. UTC+1 > > > [email protected] wrote: > > > > Dear BB and others, > > > > > > > > I now know that I have BLAS installed: > > > > > > > > (base) gerald@hephaestus:~$ dnf search blas-devel > > > > Updating and loading repositories: > > > > Repositories loaded. > > > > Matched fields: name (exact) > > > > blas-devel.i686 BLAS development libraries > > > > blas-devel.x86_64 BLAS development libraries > > > > Matched fields: name > > > > flexiblas-devel.i686 Development headers and libraries for > > > > FlexiBLAS > > > > flexiblas-devel.x86_64 Development headers and libraries for > > > > FlexiBLAS > > > > hipblas-devel.x86_64 Libraries and headers for hipblas > > > > liblas-devel.i686 libLAS development files > > > > liblas-devel.x86_64 libLAS development files > > > > openblas-devel.i686 Development headers and libraries for > > > > OpenBLAS > > > > openblas-devel.x86_64 Development headers and libraries for > > > > OpenBLAS > > > > rocblas-devel.x86_64 Libraries and headers for rocblas > > > > xblas-devel.i686 Development files for xblas > > > > xblas-devel.x86_64 Development files for xblas > > > > > > > > Attempting to install deal-candi fails at second attempt with > > > > the same error as reported before. > > > > > > > > Bye for now. > > > > > > > > Gerald. > > > > On Friday, 26 December 2025 at 12:00:05 UTC+2 Gerald Marewo > > > > wrote: > > > > > Dear BB, > > > > > > > > > > Thank you for your reply. Let me take a shot at installing > > > > > BLAS. > > > > > > > > > > Bye for now > > > > > > > > > > Gerald Marewo > > > > > Cell: +27(71)705 0830, Email: [email protected] > > > > > > > > > > > > > > > > > > > > On Fri, 26 Dec 2025, 11:54 [email protected], > > > > > <[email protected]> wrote: > > > > > > Dear Gerald, > > > > > > It does not seem like an out-of-memory error since the > > > > > > compilation of p4est is clearly not a memory intensive > > > > > > operation (it's only C after all). > > > > > > Looking at your error log, this seems to be where > > > > > > compilation crashed: > > > > > > In file included from /home/gerald/bin/dealii- > > > > > > candi/tmp/unpack/p4est-2.3.6/sc/src/sc_dmatrix.h:32, > > > > > > from /home/gerald/bin/dealii- > > > > > > candi/tmp/unpack/p4est-2.3.6/sc/src/sc_dmatrix.c:24: > > > > > > /home/gerald/bin/dealii-candi/tmp/unpack/p4est- > > > > > > 2.3.6/sc/src/sc_dmatrix.c: In function ‘sc_dmatrix_add’: > > > > > > /home/gerald/bin/dealii-candi/tmp/unpack/p4est- > > > > > > 2.3.6/sc/src/sc_blas.h:137:33: error: too many arguments to > > > > > > function ‘sc_blas_nonimplemented’; expected 0, have 6 > > > > > > 137 | #define SC_BLAS_DAXPY (void) > > > > > > sc_blas_nonimplemented > > > > > > | > > > > > > ^~~~~~~~~~~~~~~~~~~~~~ > > > > > > /home/gerald/bin/dealii-candi/tmp/unpack/p4est- > > > > > > 2.3.6/sc/src/sc_dmatrix.c:627:5: note: in expansion of > > > > > > macro ‘SC_BLAS_DAXPY’ > > > > > > 627 | SC_BLAS_DAXPY (&totalsize, &alpha, X->e[0], > > > > > > &inc, Y->e[0], &inc); > > > > > > | ^~~~~~~~~~~~~ > > > > > > > > > > > > > > > > > > What I would look into are the following: > > > > > > - Did you install all of the recommended dependencies from > > > > > > Candi before proceeding with the installation? It seems as > > > > > > if you do not have an installation of BLAS on your > > > > > > computer, which would prevent p4est from actually > > > > > > compiling. > > > > > > - If BLAS is indeed installed correctly, then I would try > > > > > > to install a more recent version of p4est. This could be > > > > > > achieved my changing the version and the checksum in > > > > > > the deal.II-toolchain/packages/p4est.package file. > > > > > > > > > > > > However, from what it seems right now is that you are > > > > > > missing a BLAS library on your computer. > > > > > > Don't hesitate if you have more questions > > > > > > Cheers > > > > > > BB > > > > > > > > > > > > > > > > > > On Sunday, December 21, 2025 at 11:20:15 a.m. UTC+1 > > > > > > [email protected] wrote: > > > > > > > Dear all, > > > > > > > > > > > > > > I recently tried to install deal.II using candi on Fedora > > > > > > > Linux 43 (Workstation Edition) and I got the attached > > > > > > > error message. > > > > > > > > > > > > > > I followed the instructions given when I ran the candi > > > > > > > shell script as follows: > > > > > > > > > > > > > > ./candi.sh -j8 --prefix=/home/gerald/bin/dealii-candi > > > > > > > > > > > > > > Could it be that my machine ran out memory? I will try > > > > > > > again later without the -j8 option. > > > > > > > > > > > > > > Could you please assist me with seeing what is going > > > > > > > wrong > > > > > > > > > > > > > > I hope to hear from you soon. > > > > > > > > > > > > > > Regards, > > > > > > > > > > > > > > Gerald. > > > > > > > > > > > > > > > > > > > > -- > > > > > > The deal.II project is located at http://www.dealii.org/ > > > > > > For mailing list/forum options, see > > > > > > https://groups.google.com/d/forum/dealii?hl=en > > > > > > --- > > > > > > You received this message because you are subscribed to a > > > > > > topic in the Google Groups "deal.II User Group" group. > > > > > > To unsubscribe from this topic, visit > > > > > > https://groups.google.com/d/topic/dealii/V_MjMXOEjX8/unsubscribe > > > > > > . > > > > > > To unsubscribe from this group and all its topics, send an > > > > > > email to [email protected]. > > > > > > To view this discussion visit > > > > > > https://groups.google.com/d/msgid/dealii/b99db8d5-4997-4c20-9855-03071a381871n%40googlegroups.com > > > > > > [1]. 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