Compilation fails with "error: ‘memcpy’ is not a member of ‘std’"

[alexbevi]

rm -f *.o wtfile
g++  -std=c++11 -o wtfile wt_file_block.cpp wt_file_reader.cpp wt_file.cpp wt_utils.cpp -I. -lm
wt_file_block.cpp: In member function ‘int WTBlockReader::readCell(wt_cell_unpack_t*, int)’:
wt_file_block.cpp:25:10: error: ‘memcpy’ is not a member of ‘std’
     std::memcpy(&c_head, cell, sizeof(wt_cell_header_t));
          ^~~~~~
wt_file_block.cpp:25:10: note: suggested alternative: ‘decay’
     std::memcpy(&c_head, cell, sizeof(wt_cell_header_t));
          ^~~~~~
          decay
wt_file_block.cpp:34:18: error: ‘memcpy’ is not a member of ‘std’
             std::memcpy(unpack_c->data, (c_head.__chunk + 1), unpack_c->size);
                  ^~~~~~
wt_file_block.cpp:34:18: note: suggested alternative: ‘decay’
             std::memcpy(unpack_c->data, (c_head.__chunk + 1), unpack_c->size);
                  ^~~~~~
                  decay
wt_file_block.cpp:41:18: error: ‘memcpy’ is not a member of ‘std’
             std::memcpy(unpack_c->data, (c_head.__chunk + 2), unpack_c->size);
                  ^~~~~~
wt_file_block.cpp:41:18: note: suggested alternative: ‘decay’
             std::memcpy(unpack_c->data, (c_head.__chunk + 2), unpack_c->size);
                  ^~~~~~
                  decay
wt_file_block.cpp:68:18: error: ‘memcpy’ is not a member of ‘std’
             std::memcpy(unpack_c->data, cell_data, unpack_c->size);
                  ^~~~~~
wt_file_block.cpp:68:18: note: suggested alternative: ‘decay’
             std::memcpy(unpack_c->data, cell_data, unpack_c->size);
                  ^~~~~~
                  decay
Makefile:12: recipe for target 'wtfile' failed
make: *** [wtfile] Error 1

This can be fixed by just adding an include to wt_file_block.cpp:

diff --git a/wt_file_block.cpp b/wt_file_block.cpp
index 512819b..7f508c5 100644
--- a/wt_file_block.cpp
+++ b/wt_file_block.cpp
@@ -1,4 +1,5 @@
 #include <iostream>
+#include <cstring>
 #include <stdio.h>
 #include <string.h>