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DNX是.NET Execution Environment，前身是XRE，XRE的前身是KRuntime，项目网址：https://github.com/aspnet/DNX 。
签出DNX的代码：
git clone https://github.com/aspnet/DNX.git --recursive
安装Mono：
apt-get install mono-complete
运行./build.sh命令进行编译，出现错误：
WARNING: Invalid certificate received from server. Error code: 0xffffffff800b010a WARNING: Invalid certificate received from server. Error code: 0xffffffff800b010a WARNING: Invalid certificate received from server. Error code: 0xffffffff800b010a WARNING: Invalid certificate received from server. Error code: 0xffffffff800b010a Unable to find package ‘KoreBuild‘. WARNING: Error getting response stream (Write: The authentication or decryption has failed.): SendFailure WARNING: Error getting response stream (Write: The authentication or decryption has failed.): SendFailure Unable to find version ‘0.2‘ of package ‘Sake‘.
通过下面的命令可以修复这个问题：
CERTMGR=/usr/local/bin/certmgr sudo $CERTMGR -ssl -m https://go.microsoft.com sudo $CERTMGR -ssl -m https://nugetgallery.blob.core.windows.net sudo $CERTMGR -ssl -m https://nuget.org sudo $CERTMGR -ssl -m https://www.myget.org/F/aspnetvnext/ mozroots --import --sync
继续编译，出现下面的错误：
./build.sh: 31: ./build.sh: source: not found ./build.sh: 35: ./build.sh: dnvm: not found
将build.sh文件中的第一行由 #!/bin/sh 改为 #!/usr/bin/env bash ，错误消失。
错误的原因是：在Ubuntu中，/bin/sh指向的是/bin/dash，而dash不支持source命令，详见source command not found in sh shell。
继续编译，出现下面的错误：
info: Exec info: program: kpm info: commandline: restore info: workingdir: src/Microsoft.Framework.ApplicationHost warn: ApplicationName=‘kpm‘, CommandLine=‘restore‘, CurrentDirectory=‘src/Microsoft.Framework.ApplicationHost‘, Native error= Cannot find the specified file
查看makefile.shade文件（这是Sake的配置文件），发现问题出在下面的配置部分
for each=‘var projectFile in Files.Include("src/*/project.json")‘
exec program=‘cmd‘ commandline=‘/C kpm restore‘ if=‘!IsMono‘ workingdir="${Path.GetDirectoryName(projectFile)}"
exec program=‘kpm‘ commandline=‘restore‘ if=‘IsMono‘ workingdir="${Path.GetDirectoryName(projectFile)}"
for each=‘var projectFile in Files.Include("test/*/project.json")‘
exec program=‘cmd‘ commandline=‘/C kpm restore‘ if=‘!IsMono‘ workingdir="${Path.GetDirectoryName(projectFile)}"
exec program=‘kpm‘ commandline=‘restore‘ if=‘IsMono‘ workingdir="${Path.GetDirectoryName(projectFile)}"
for each=‘var projectFile in Files.Include("samples/*/project.json")‘
exec program=‘cmd‘ commandline=‘/C kpm restore‘ if=‘!IsMono‘ workingdir="${Path.GetDirectoryName(projectFile)}"
exec program=‘kpm‘ commandline=‘restore‘ if=‘IsMono‘ workingdir="${Path.GetDirectoryName(projectFile)}"
出错是因为找不到kpm命令。
已经在github上针对这个问题提交了issue，等这个问题解决后再继续编译。
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原文地址：http://www.cnblogs.com/dudu/p/build-dnx-on-linux-ubuntu.html
