Thanks to Dan Horák
and Rene Engelhard for their answers!
Dan said:
-"Because 32-bit
system means max 4GB address space for a process and ld runs as a
single process".
I installed a PAE
kernel, so it can effectively use more than 4 GB.
-"You can try disabling or reducing the size of debuginfo to reduce the size of the *.o files if it's used, you can disable LTO and there are some options for ld to reduce its memory usage a bit".
I tried several permutations to reduce the amount of memory used. One of them was to reduce the number of processors in my autogen.input:
--with-parallelism=1
Another one was to add this parameter when running make:
make LDFLAGS="-Wl,--reduce-memory-overheads"
I also increased the available memory on the VM from 12 to 15 GB. But no results, always got the exhausted memory message.
I also tried several
other possible solutions, but it feels like going on a wild goose
chase without knowing exactly what to do, relying on some general
random advices found on the web.
-------------
Rene said:
-"Debian still ships LibreOffice on 32bit archs, as do other distributions."
Oh! Thanks for the tip! I was not aware that Debian even has binary LibreOffice 24.2 32-bit packages, albeit in the unstable branch.
I was even able to
build LibreOffice from source:
apt-get --build source libreoffice
This proves to me that the LibreOffice source code has not dropped 32-bit support, but I still don't know why my own compilation attempts always failed with a memory exhausted message, even with the same VM configuration.
Would it be possible
for me to just use the Debian LibreOffice 24.2 binaries or its source
packages? Not quite, as they also have a lot of dependencies on
packages that are only available in the unstable branch, so they
would not be suitable for a distribution intended for a stable Debian
12 bookworm base.
-"I do -g1 in Debian. LTO works".
Where should I add the -g1 parameter?
-"make check fails. I do a minimal set (testtools bridgetest, smoketest, sal, the other public libraries) to at least not get something fundamentally broken".
My autogen.input file is:
--with-parallelism=16
--with-distro=LibreOfficeLinux
--with-lang=es
--with-myspell-dicts
--enable-release-build
--with-package-format=deb
--disable-dependency-tracking
--with-jdk-home=/usr/lib/jvm/java-11-openjdk-i386/
--with-privacy-policy-url="">
-"And somehow the testtools bridgetest fails when building with gcc >= 13, 12 works. Haven't found a solution yet.)"
I'm using gcc 13!
Maybe this could be the cause of my compilation failures?
I'll make some more
attempts to compile LibreOffice 32-bit now using gcc 12, any
additional ideas or suggestions would be more than welcome.
Thanks again.
