Re: mipsel out-of-memory building dolfinx 0.4.0

[Drew Parsons <dparsons@debian.org>]

On 2022-06-13 00:02, Jeffrey Walton wrote:
> On Sun, Jun 12, 2022 at 5:38 PM Drew Parsons <dparsons@debian.org> 
> wrote:
> > Hi MIPS porters, I need helping with the build of fenics-dolfinx on
> > mipsel from experimental,
> > https://salsa.debian.org/science-team/fenics/fenics-dolfinx/-/tree/experimental
...
> I used to see something similar when building Crypto++ on resource
> constrained dev-boards without swap files, like a BeagleBoard. cc1plus
> used to crash all the time when certain source files were built,
> especially ones that included a lot of header files. The symptom was
> the same as:
>
> > cc1plus: out of memory allocating 17707045
> > bytes after a total of 42041344 bytes
>
> Drop back to 1 make job. Don't use `make -j N`. Instead, just use
> `make` or `make -j 1`.

It's a good thought, but unfortunately it didn't help.

I applied it as "DEB_BUILD_OPTIONS = parallel=1" in debian/rules so 
dh_auto_build proceeds with "make -j1 "INSTALL=install 
--strip-program=true" VERBOSE=1"

Applied on top of the fenics-dolfinx 1:0.4.1-1exp2 build configuration 
(with lto deactivated), it still gives

  c1plus: out of memory allocating 17707031 bytes after a total of 
41906176 bytes

when compiling dolfinx/wrappers/refinement.cpp.o.

Running make -j1 with all optimisation switched off (-O0) gives the same 
linking error I reported before: linking the python extension 
cpp.cpython-310-mipsel-linux-gnu.so still gets the error "relocation 
truncated to fit".

Drew