vecgeom-add-ppc64-cmake-fix.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b3014e9..e3604be 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -372,6 +372,9 @@ elseif (${_arch_lo} MATCHES native)
   if (Intel)
     set(VECGEOM_CXX_FLAGS "${VECGEOM_CXX_FLAGS} -xHost")
     set(VECGEOM_COMPILATION_FLAGS "${VECGEOM_COMPILATION_FLAGS} -xHost")
+  elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)64le")
+    set(VECGEOM_CXX_FLAGS "${VECGEOM_CXX_FLAGS} -mcpu=${_arch_lo} -mtune=${_arch_lo}")
+    set(VECGEOM_COMPILATION_FLAGS "${VECGEOM_COMPILATION_FLAGS} -mcpu=${_arch_lo} -mtune=${_arch_lo}")
   else()
     set(VECGEOM_CXX_FLAGS "${VECGEOM_CXX_FLAGS} -march=${_arch_lo}")
     set(VECGEOM_COMPILATION_FLAGS "${VECGEOM_COMPILATION_FLAGS} -march=${_arch_lo}")