note:pragma message: This header is deprecated. Use boost/integer/integer_log2.hpp> instead.

编译caffe过程中会提示以下信息：

In file included from /usr/local/include/boost/random/detail/integer_log2.hpp:19:0,
from /usr/local/include/boost/random/detail/large_arithmetic.hpp:19,
from /usr/local/include/boost/random/detail/const_mod.hpp:23,
from /usr/local/include/boost/random/linear_congruential.hpp:30,
from /usr/local/include/boost/random/additive_combine.hpp:27,
from /usr/local/include/boost/random.hpp:36,
from src/caffe/util/math_functions.cpp:2:
/usr/local/include/boost/pending/integer_log2.hpp:7:89: note: #pragma message: This header is deprecated. Use instead.

原因分析

出现上述现象的原因是安装的boost版本较低，最新版的boost抛弃了/usr/local/include/boost/pending/integer_log2.hpp。

解决方法

ubuntu下打开usr/local/include/boost/random/detail/integer_log2.hpp，将头文件#include 修改为为#include 即可解决问题。
ps：boost1.7版本已经修复了该问题。