On 2025-10-15 12:54 AM, Panu Matilainen wrote:
I haven't looked at the details here, but I'll note that both these
predate rpm's native support for memory/cpu balancing in rpm 4.19.
Ideally, these limit_build macros would be phased out in both Fedora
and Suse in favor of using the native thing. The road towards that
would be having limit_build() translate its arguments to the native
tunables instead of all that shell math.
Awesome! I see it mentioned in the 4.19 release nodes, but not much in
the way of documentation.
If I look through commits, it looks like "%limit_build -m 4096" should
be removed and replaced with "%global _smp_tasksize_proc 4096" near the
top of the spec? Is that right?
If that's the case, then I think we'll need two steps to clean up:
1: replace all of the uses of %limit_build and %constrain build, then..
2: replace the %limit_build and %constrain_build macro definitions with
versions that consume the -m and -c arguments, but return nothing and
have no side effects
(and maybe 3: announce the deprecation of those macros somewhere)
I only see 20 packages that use these macros, so cleaning up shouldn't
take *too* long.
--
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