Comment # 3 on bug 1194739 from Stefan Dirsch

Thanks. There is only +%limit_build left as macro in this package. I'll try
with

--- Mesa.spec   (revision 1078)
+++ Mesa.spec   (working copy)
@@ -142,6 +142,7 @@
 BuildRequires:  glslang-devel
 BuildRequires:  imake
 BuildRequires:  libtool
+BuildRequires:  memory-constraints
 BuildRequires:  meson
 BuildRequires:  pkgconfig
 BuildRequires:  python3-base
@@ -788,6 +789,11 @@
 %endif

 %build
+# try to avoid OOM on ppc64 (boo#1194739)
+%ifarch ppc64 ppc64le
+%limit_build -m 12000
+%endif
+
 egl_platforms=x11,wayland

 %meson \

Then we'll see whether this helps or not ...