查看“Buildroot Toolchain”的源代码


=配置工具链=

Toolchain type (External toolchain)  --->  
  ( ) Buildroot toolchain
  ( ) External toolchain

=外部交叉编译工具链配置=
(X) External toolchain
==手动移植工具链==
参考文章  https://blog.csdn.net/zhou_chenz/article/details/52346134
==自动下载配置==
   Toolchain type (External toolchain)  --->                                                                                          		 
       *** Toolchain External Options ***                                                                                                  
       Toolchain (Custom toolchain)  --->                                                                                                  
       Toolchain origin (Toolchain to be downloaded and installed)  --->                                                                   
   (https://publishing-ap-linaro-org.s3.amazonaws.com/...)
   ($(ARCH)-linux-gnueabihf) Toolchain prefix                                                                                              
       External toolchain gcc version (5.x)  --->                                                                                          
       External toolchain kernel headers series (4.0.x)  --->                                                                              
       External toolchain C library (glibc/eglibc)  --->                                                                                   
   [*] Toolchain has SSP support?                                                                                                          
   [*] Toolchain has RPC support?                                                                                                          
   [*] Toolchain has C++ support?                                                                                                          
   ()  Extra toolchain libraries to be copied to target                                                                                    
   [ ] Copy gdb server to the Target                                                                                                       
       *** Host GDB Options ***                                                                                                            
   [ ] Build cross gdb for the host                                                                                                        
       *** Toolchain Generic Options ***                                                                                                   
   [ ] Copy gconv libraries                                                                                                                
   [*] Enable MMU support                                                                                                                  
   ()  Target Optimizations                                                                                                                
   ()  Target linker options                                                                                                               
   [ ] Register toolchain within Eclipse Buildroot plug-in

=自动构建工具链=
(X) Buildroot toolchain

    Toolchain type (Buildroot toolchain)  --->
      *** Toolchain Buildroot Options ***
  (100ask) custom toolchain vendor name
      C library (glibc)  --->
      *** Kernel Header Options ***
      Kernel Headers (Same as kernel being built)  --->
      Custom kernel headers series (4.1.x)  --->
      glibc version (2.23)  --->
      *** Binutils Options ***
      Binutils Version (binutils 2.26.1)  --->
  ()  Additional binutils options
      *** GCC Options ***
      GCC compiler Version (gcc 5.x)  --->
  ()  Additional gcc options
  [*] Enable C++ support
  [ ] Enable Fortran support
  [ ] Enable compiler link-time-optimization support
  [ ] Enable compiler OpenMP support
  [ ] Enable graphite support
      *** Host GDB Options ***
  [ ] Build cross gdb for the host
      *** Toolchain Generic Options ***
  [ ] Copy gconv libraries
  [*] Enable MMU support
  ()  Target Optimizations
  ()  Target linker options
  [ ] Register toolchain within Eclipse Buildroot plug-in
=详细注释=
Toolchain：工具链选项
  Toolchain type：Buildroot提供两种方式使用toolchain
      external toolthain：非Buildroot提供的交叉编译器
      Buildroot toolchain：Buildroot本身编译生成的Buildroot toolchain，直接选择此项
  custom toolchain vendor name：填上S3C2440
  C library：C库选择，选择 glibc
  Kernel Headers：内核头文件，Linux 4.9.x kernel headers
  glibc version：glibc版本选择，2.24
  Binutils Version：binutils版本：2.27
  Additional binutils options：附加的 binutils 选择，不填即可
  GCC compiler Version：GCC版本选择，gcc 6.x
  Additional gcc options：附件的GCC选项，不填写即可
  Enable C++ support：使能C++支持，选上
  Enable Fortran support：使能Fortran语言支持，不选
  Enable compiler link-time-optimization support：是否支持LTO，不选，LTO是什么：http://blog.csdn.net/fickyou/article/details/52381776
  Enable compiler OpenMP support：支持OpenMP？OpenMP用于共享内存并行系统的多处理器程序设计，OpenMP并不适合需要复杂的线程间同步和互斥的场合，OpenMp的另一个缺点是不能在非共享内存系统(如计算机集群)上使用。不选择
  Enable graphite support ：是否支持graphite。Graphite是应用WEB应用的一套开源的编程接口。不选择。具体看百度百科：https://baike.baidu.com/item/Graphite/9810474?fr=aladdin
  Build cross gdb for the host：主机上运行gdb进行调试，不选
  Copy gconv libraries：拷贝 gconv库，gconv库用于在不同字符集之间进行转换。默认不选即可
  Enable MMU support：使能 MMU，S3C2440支持MMU，选上
  Target Optimizations：不选
  Target linker options：不选
  Register toolchain within Eclipse Buildroot plug-in：eclipse插件支持，不选
=参考网址=
* Toolchain介绍  https://www.slideshare.net/anil_pugalia/toolchain-4566799
* linaro工具链下载地址 https://releases.linaro.org/components/toolchain/binaries/
[[Category:rootfs]]
[[Category:buildroot]]