作者：Maxwell Li
日期：2017/12/05
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最近在学习 UEFI，正好手头有一台阿里云主机，Ubuntu 16.04 系统，就拿来搭建开发环境了。
项目wiki：EDK-II
创建目录并获取源码
$ mkdir ~/src
$ cd ~/src
$ git clone https://github.com/tianocore/edk2
编译基础工具
$ make -C edk2/BaseTools
在编译的时候报错，部分错误如下：
GenSec.c:1354:21: error: pointer targets in passing argument 1 of ‘strcasecmp’ differ in signedness [-Werror=pointer-sign]
if (stricmp(DummyFileBuffer, InFileBuffer + (InFileSize - DummyFileSize)) == 0){
^
In file included from GenSec.c:17:0:
/usr/include/string.h:529:12: note: expected ‘const char *’ but argument is of type ‘UINT8 * {aka unsigned char *}’
extern int strcasecmp (const char *__s1, const char *__s2)
^
GenSec.c:1354:38: error: pointer targets in passing argument 2 of ‘strcasecmp’ differ in signedness [-Werror=pointer-sign]
if (stricmp(DummyFileBuffer, InFileBuffer + (InFileSize - DummyFileSize)) == 0){
^
In file included from GenSec.c:17:0:
/usr/include/string.h:529:12: note: expected ‘const char *’ but argument is of type ‘UINT8 * {aka unsigned char *}’
extern int strcasecmp (const char *__s1, const char *__s2)
^
cc1: all warnings being treated as errors
我没有管他，继续下一步（其实是因为看不懂，有没有大神帮忙解释一下）。
设置基础环境
cd ~/src/edk2
export EDK_TOOLS_PATH=$HOME/src/edk2/BaseTools
. edksetup.sh BaseTools
edksetup.sh 执行完毕后，会在 Conf 目录下产生几个默认配置文件。
修改配置文件
打开 Conf/target.txt 文件，更改以下两行：
ACTIVE_PLATFORM = Nt32Pkg/Nt32Pkg.dsc
TOOL_CHAIN_TAG = MYTOOLS
改为
ACTIVE_PLATFORM = MdeModulePkg/MdeModulePkg.dsc
TOOL_CHAIN_TAG = GCC5
如果 gcc 版本是4.6，则填 GCC46，如果 gcc 版本是4.5，则填 GCC45。
构建
$ build
