commit 4883b2bac4e2bb5cee49b2efdf0f77dfc2b5b77c
Author: Bernhard M. Wiedemann <bwiedemann@suse.de>
Date:   Fri May 9 11:36:03 2025 +0200

    macros: use smp_mflags
    
    to avoid embedding the number of CPU cores
    in the .src.rpm header's expanded SPEC field.
    
    See also https://github.com/rpm-software-management/rpm/issues/2343
    
    This patch was done while working on reproducible builds for openSUSE.

Index: meson-1.8.0/data/macros.meson
===================================================================
--- meson-1.8.0.orig/data/macros.meson
+++ meson-1.8.0/data/macros.meson
@@ -28,7 +28,7 @@
 %meson_build \
     %{shrink:%{__meson} compile \
         -C %{_vpath_builddir} \
-        -j %{_smp_build_ncpus} \
+        %{_smp_mflags} \
         %{?__meson_verbose:--verbose} \
         %{nil}}
 
@@ -42,7 +42,7 @@
 %meson_test \
     %{shrink:%{__meson} test \
         -C %{_vpath_builddir} \
-        --num-processes %{_smp_build_ncpus} \
+        %{_smp_mflags} \
         --print-errorlogs \
         %{?qemu_user_space_build: -t 10} \
         %{nil}}