id summary reporter owner description type status milestone component version severity resolution keywords cc 13449 "Execution of boost_mpl_preprocess.py fails if $(boost_root) path contains the string ""linux""" Mihai Pop Aleksey Gurtovoy "**How to reproduce:** Build System: Ubuntu 16.04.0 LTS GCC: all Let's say that we have the boost sources in `/tmp/boost-linux/boost_1_X_X` The important thing is to have the string `linux` in the `boost-root` variable. **Error log:** {{{ python boost_mpl_preprocess.py In file included from /tmp/boost-linux/boost_1_63_0/libs/mpl/preprocessed/vector/vector40.cpp:15:0: /tmp/boost-linux/boost_1_63_0/boost/config.hpp:30:29: fatal error: /tmp/boost-1/boost_1_63_0/libs/mpl/preprocessed/include/plain/user.hpp: No such file or directory compilation terminated. In file included from /tmp/boost-linux/boost_1_63_0/libs/mpl/preprocessed/vector/vector70.cpp:15:0: /tmp/boost-linux/boost_1_63_0/boost/config.hpp:30:29: fatal error: /tmp/boost-1/boost_1_63_0/libs/mpl/preprocessed/include/plain/user.hpp: No such file or directory compilation terminated. In file included from /tmp/boost-linux/boost_1_63_0/libs/mpl/preprocessed/vector/vector30.cpp:15:0: /tmp/boost-linux/boost_1_63_0/boost/config.hpp:30:29: fatal error: /tmp/boost-1/boost_1_63_0/libs/mpl/preprocessed/include/plain/user.hpp: No such file or directory compilation terminated. }}} **Problem:** This appears because in `preprocess.cmd` gcc is invoked with include files included with angle brackets, so if we have the string `linux` it will be evaluated to `1` because it is a macro " Bugs new To Be Determined mpl Boost 1.63.0 Problem