Boost. asio Study Notes 1. Installation of the boost library in linux, boost. asioboost

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Boost. asio Study Notes 1. Installation of the boost library in linux, boost. asioboost

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The first step to learn about open-source libraries is to compile and install the libraries, and then run a demo to complete subsequent work.

The following describes how to install the boost library in linux.

[Mjf @ localhost ~] $Tar-zxvf boost_1_55_0.tar.gz
[Mjf @ localhost boost_000055_0] $./Bootstrap. sh -- prefix =/home/mjf/lib
[Mjf @ localhost boost_000055_0] $Sudo./b2 install


1. Extract


2. Generate bjam

The preceding command can have various options. For more information, see./bootstrap. sh -- help. The -- prefix parameter specifies the installation path. If the -- prefix parameter is not included, the default path is/usr/local/include and/usr/local/lib, store header files and various libraries respectively.


3. Compile and install
Here is all compilation. Of course, you can also choose to compile only a part. The option -- with-<library> is used to compile only the specified library. For example, if you enter -- with-regex, only the regex library is compiled.
After the compilation is complete, install the header file and the generated library in the specified path (-- prefix ).

Some common parameters of bjam are listed as follows:

-- Build-dir = <builddir> The compiled temporary file will be placed in builddir (this is better managed and can be deleted after compilation)
-- Stagedir = <stagedir> Path for storing compiled library files. The default path is stage.
-- Build-type = complete

Compile all the versions. Otherwise, only a small part of the versions will be compiled, which is equivalent:

Variant = release, threading = multi; link = shared | static; runtime-link = shared

Variant = debug | release Determine the version to compile (Debug or Release ?)
Link = static | shared Decide whether to use static or dynamic Databases
Threading = single | multi Decide whether to use a single thread or multi-thread Library
Runtime-link = static | shared Determines whether the database is static or dynamically linked to the C/C ++ standard library.
-- With-<library> Compile only the specified database, for example, input -- with-regex to compile only the regex database.
-- Show-libraries Display the name of the library to be compiled


After the installation is complete, let's run an example:

#include <iostream>#include <boost/timer.hpp>using namespace std;int main(){boost::timer t;cout << "max timespan:"<<t.elapsed_max()/3600<<"h"<<endl;cout << "min tmiespan:"<<t.elapsed_min()<<"s"<<endl;cout<<"now time elapsed:"<<t.elapsed()<<"s"<<endl;return 0;}


G ++-o test. cpp-I/home/mjf/lib/include-L/home/mjf/lib

./Test




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