MDEV-24556: Build does not recognize powerpc64 (OpenBSD)

Reviewer: Daniel Black

mysys/CMakeLists.txt

@@ -115,7 +115,7 @@ ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64|AARCH64")
         COMPILE_FLAGS "-march=armv8-a+crc+crypto")
     ENDIF()
   ENDIF()
-ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64")
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64|powerpc64")
   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")

storage/rocksdb/build_rocksdb.cmake

@@ -109,8 +109,8 @@ if(NOT WIN32)
 endif()
 
 include(CheckCCompilerFlag)
-# ppc64 or ppc64le
-if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64")
+# ppc64 or ppc64le or powerpc64 (BSD)
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64|powerpc64")
   CHECK_C_COMPILER_FLAG("-maltivec" HAS_ALTIVEC)
   if(HAS_ALTIVEC)
     message(STATUS " HAS_ALTIVEC yes")