diff --git a/package/pkg-cmake.mk b/package/pkg-cmake.mk
index 5d0a455bc3..0897430f70 100644
--- a/package/pkg-cmake.mk
+++ b/package/pkg-cmake.mk
@@ -225,6 +225,10 @@ ifeq ($(BR2_arm),y)
 CMAKE_SYSTEM_PROCESSOR = $(CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT)l
 else ifeq ($(BR2_armeb),y)
 CMAKE_SYSTEM_PROCESSOR = $(CMAKE_SYSTEM_PROCESSOR_ARM_VARIANT)b
+else ifeq ($(call qstrip,$(BR2_ARCH)),powerpc64)
+CMAKE_SYSTEM_PROCESSOR = ppc64
+else ifeq ($(call qstrip,$(BR2_ARCH)),powerpc64le)
+CMAKE_SYSTEM_PROCESSOR = ppc64le
 else
 CMAKE_SYSTEM_PROCESSOR = $(BR2_ARCH)
 endif