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Mar 23, 2017

README.md

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Things may work for you, or may not. Things may never work because of huge differences between Linux and Windows. Or things may work in future, if you report the problem on GitHub or GitLab. If you don't have an account on one of those you can email me: rmy@pobox.com.

Building

You need a MinGW compiler and a POSIX environment. I cross-compile on Linux. On Fedora the following should pull in everything required:

dnf install gcc make ncurses-devel perl-Pod-Html

dnf install mingw32-gcc mingw32-windows-default-manifest (for a 32-bit build)

dnf install mingw64-gcc mingw64-windows-default-manifest (for a 64-bit build)

To start, run make mingw32_defconfig or make mingw64_defconfig. You can then customize your build with make menuconfig or by editing .config, if you know what you're doing.

In particular you may need to adjust the compiler by going to Busybox Settings -> Build Options -> Cross Compiler Prefix

Then just make.

Limitations

  • Use forward slashes in paths: Windows doesn't mind and the shell will be happier.
  • Don't do wild things with Windows drive or UNC notation.
  • Wildcard expansion is disabled by default, though it can be turned on at compile time. This only affects command line arguments to the binary: the BusyBox shell has full support for wildcards.
  • Handling of users, groups and permissions is totally bogus. The system only admits to knowing about the current user and always returns the same hardcoded uid, gid and permission values.
  • Some crufty old Windows code (Windows XP, cmd.exe) doesn't like forward slashes in environment variables. The -X shell option (which must be the first argument) prevents busybox-w32 from changing backslashes to forward slashes. If Windows programs don't run from the shell it's worth trying it.
  • If you want to install 32-bit BusyBox in a system directory on a 64-bit version of Windows you should put it in C:\Windows\SysWOW64, not C:\Windows\System32 as you might expect. On 64-bit systems the latter is for 64-bit binaries.
  • ANSI escape sequences are emulated by converting to the equivalent in the Windows console API. Setting the environment variable BB_SKIP_ANSI_EMULATION will cause ANSI escapes to be passed to the console without emulation. This may be useful for Windows consoles that support ANSI escapes (e.g. ConEmu).
  • It's possible to obtain pseudo-random numbers using if=/dev/urandom as the input file to dd. The same emulation of /dev/urandom is used internally by the shred utility and to support https in wget. Since the pseudo-random number generator isn't being seeded with sufficient entropy the randomness shouldn't be relied on for any serious use.

About

WIN32 native port of BusyBox. For additional information and binaries see this website:

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