fit for ninja generator (#49303)

cmake/external/jemalloc.cmake

@@ -21,9 +21,9 @@ ExternalProject_Add(
   URL ${JEMALLOC_URL}
   INSTALL_DIR ${JEMALLOC_INSTALL}
   DOWNLOAD_DIR "${JEMALLOC_DOWNLOAD_DIR}"
-  BUILD_COMMAND $(MAKE)
+  BUILD_COMMAND make
   BUILD_IN_SOURCE 1
-  INSTALL_COMMAND $(MAKE) install
+  INSTALL_COMMAND make install
   CONFIGURE_COMMAND "${JEMALLOC_DOWNLOAD_DIR}/configure"
                     --prefix=${JEMALLOC_INSTALL} --disable-initial-exec-tls)
 

cmake/external/rocksdb.cmake

@@ -75,6 +75,7 @@ ExternalProject_Add(
 add_library(rocksdb STATIC IMPORTED GLOBAL)
 
 add_dependencies(extern_rocksdb snappy)
+add_dependencies(extern_rocksdb extern_jemalloc)
 set_property(TARGET rocksdb PROPERTY IMPORTED_LOCATION ${ROCKSDB_LIBRARIES})
 add_dependencies(rocksdb extern_rocksdb)