--- a/mysys/CMakeLists.txt
+++ b/mysys/CMakeLists.txt
@@ -141,7 +141,7 @@ ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "a
   ENDIF()
 ENDIF()
 
-IF(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64|powerpc64" OR CMAKE_SYSTEM_NAME MATCHES AIX)
+IF(FALSE)
   SET(MYSYS_SOURCES ${MYSYS_SOURCES} crc32/crc32_ppc64.c crc32/crc32c_ppc.c)
   SET_SOURCE_FILES_PROPERTIES(crc32/crc32_ppc64.c crc32/crc32c_ppc.c PROPERTIES
         COMPILE_FLAGS "${COMPILE_FLAGS} -maltivec -mvsx -mpower8-vector -mcrypto -mpower8-vector")
--- a/mysys/crc32ieee.cc
+++ b/mysys/crc32ieee.cc
@@ -52,7 +52,6 @@ static my_crc32_t init_crc32()
 static const my_crc32_t my_checksum_func= init_crc32();
 
 #ifdef __powerpc64__
-# error "my_checksum() is defined in mysys/crc32/crc32_ppc64.c"
 #endif
 extern "C"
 unsigned int my_checksum(unsigned int crc, const void *data, size_t len)
