交叉编译

windows下交叉编译ubuntu工具链

sparkwalk

Prerequisites and instructions for using crosstool-NG for building a cross toolchain on Windows (Cygwin) as build and, optionally Windows (hereafter) MinGW-w64 as host.

  1. Use Cygwin64 if you can. DLL base-address problems are lessened that way and if you bought a 64-bit CPU, you may as well use it.
  2. You must enable Case Sensitivity in the Windows Kernel (this is only really necessary for Linux targets, but at present, crosstool-ng refuses to operate on case insensitive filesystems). The registry key for this is: HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\kernel\obcaseinsensitive (set to 0 and reboot the machine.)Read more here. Since release 1.7, Cygwin no longer supports the ‘managed’ mount option. You must use case sensitive FS.
  3. Using setup.exe or setup-x86_64.exe, install the default packages and also the following ones:
    • autoconf
    • automake
    • bison
    • diffutils
    • flex
    • gawk
    • gcc-g++
    • git
    • gperf
    • help2man
    • libncurses-devel
    • make
    • patch
    • python-devel
    • texinfo
    • wget
    • xzLeave “Select required packages (RECOMMENDED)” ticked. Notes:
    • The packages marked with * are only needed if your host is MinGW-w64.
  4. Although nativestrict symlinks seem like the best idea, extracting glibc fails when they are enabled, so just don’t set anything here. If your host is MinGW-w64 then these ‘Cygwin-special’ symlinks won’t work, but you can dereference them by using tar options –dereference and –hard-dereference when making a final tarball. I plan to investigate and fix or at least work around the extraction problem. Read more here.
  5. If both BFD and GOLD linkers are enabled in binutils, collect2.exe will attempt to run ld which is a shell script so you need to make sure that a working shell is in your path. Eventually this will be replaced with a native program for MinGW-w64 host.

Notes

  1. Cygwin is slow. No, really, really slow. Expect about approximately 5x to 10x slowdown compared to a Linux system.
  • 需要加入到系统环境变量:
    • E:\x86_64-ubuntu16.04-linux-gnu\bin
    • E:\x86_64-ubuntu16.04-linux-gnu\libexec\gcc\x86_64-ubuntu16.04-linux-gnu\8.3.0
    • E:\x86_64-ubuntu16.04-linux-gnu\x86_64-ubuntu16.04-linux-gnu\bin
  • 编译时需要指定sysroot
--sysroot=E:\x86_64-ubuntu16.04-linux-gnu\x86_64-ubuntu16.04-linux-gnu\sysroot