问题
I'm trying to use the Boost Copy (BCP) utility to pull the normal_distribution class out of Boost. However, when I do bcp normal_distribution ./my_normal_distribution_dir, nothing appears in the my_normal_distribution_dir directory.
Here's some more detailed background on the environment that I'm doing this in:
On Mac OS 10.7, I downloaded the Boost 1.50 and untared source files. In the top-level Boost directory, I did ./bootstrap.sh. Then, I did ./bjam ./tools/bcp, which produced a bcp executable in the ./dist/bin directory. I created a directory called my_normal_distribution_dir. Then, I tried the following commands to extract the normal_distribution class:
./dist/bin/bcp normal_distribution ./my_normal_distribution_dir
./dist/bin/bcp --list normal_distribution --boost=./ ./my_normal_distribution_dir
./dist/bin/bcp --list normal_distribution --boost=./ output-path:./my_normal_distribution_dir
I also tried using the absolute path of my_normal_distribution_dir.
All of these give the following output:
no errors detected
However, after trying all this stuff, the my_normal_distribution_dir directory is still empty! What should I do?
Also, thanks to this thread for suggesting BCP. Once we solve the problem described above, BCP should handle my use case perfectly.
回答1:
I never did resolve this. I ended up just manually yanking the files I needed from the Boost codebase. I'd love to learn how to do it the "right" way, though.
回答2:
I guess you need something like
bcp --list math/distributions/normal.hpp
Documentation: http://www.boost.org/doc/libs/1_59_0/tools/bcp/doc/html/index.html#bcp.syntax.module
来源：https://stackoverflow.com/questions/11604285/boost-bcp-doesnt-output-any-files