Re: Open Source does not mean easily re-compile-able

On Sun, 12/29/2024 1:59 PM, Kalevi Kolttonen wrote:

Eric Pozharski <apple.universe@posteo.net> wrote:

Yay!  The joy of building redhat.  Expect your
build dependencies being inadequate, missing,
or plainly wrong.  Just saying.

 
After some minor spec file tweaking, I managed to do
*one* successful TB build, but because Rust compiler can
hog almost 16GB of memory, most of the time I just
cannot build TB using my modest Lenovo laptop. OOM
killer kicks in and destroys the build.
 
I never could have believed that having 16GB of
RAM and 8GB of swap is not enough for building TB!
 
br,
KK
 

Try a chain saw next time :-)

It's one of the first practical tests the machine got.
The RPMBuild phase was awfully slow (it spoiled the fun).
But the compiles and linking behaved well. RPM compression
seems to run on one core.

   [Picture]  During compile phase...

   https://i.postimg.cc/44qRrgxb/Thunderbird-Fedora41-Build-From-Source-via-Mock.gif

I think it's possible the build slows down, the longer it runs.
Like "something" is fragmenting.

Even on this machine, the process does not encourage
interactive operation. It takes too long. Adjusting the
command a bit so it just compiles and links, would be
better, if that's possible.

mock --resultdir=/tmp/results --rootdir=/tmp/mock --rebuild thunderbird-128.5.2-1.fc41.src.rpm | tee /tmp/build_out.txt

I picked Fedora for the job, because it only takes two commands
in a terminal, to do it. In simplified terms...

dnf download --source packagename    # Downloading source doesn't need root.
mock --rebuild packagename           # User account belongs to "mock" group, doesn't build as root

But I need to do something else to that Mock command,
to get what I want (a "portable" copy of Thunderbird,
there should be a dir created with that sitting in it).

Summary: No question, a bit of RAM helps. Some of the RAM
         accounting in Linux is just weird (process resident
         seen rising, graph in system monitor remains flat).
         I was expecting to see a "hump" while linking, but
         the graph was relatively flat and featureless.

   Paul