boost install with cxx14 support

Submitted by lepton on Wed, 10/24/2018 - 15:13

by default boost has build with cxx11 support on mac 10.13 high sierra with xcode 9.4

to avoid link errors with c++14,it should build with c++14 support

./  --prefix=path

./b2 link=static cxxflags="-std=c++14" -d+2 stage

// ./b2 .....

//./b2 install


//on gentoo may has    error: "none" is not a known value of feature

//this because boost installed and the file /usr/share/boost-build/site-config.jam

//add this --ignore-site-config


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