1 [[!meta title="cross-compiling tinc for Windows under Linux using MinGW"]]
3 ## Howto: cross-compiling tinc for Windows under Linux using MinGW
5 This howto describes how to create a Windows binary of tinc. Although it is
6 possible to compile tinc under Windows itself, cross-compiling it under Linux
7 is much faster. It is also much easier to get all the dependencies in a modern
8 distribution. Therefore, this howto deals with cross-compiling tinc with MinGW
9 under Linux on a Debian distribution.
15 * Install MinGW and Wine.
16 * Create a directory where we will perform all cross-compilations.
17 * Get all the necessary sources.
18 * Cross-compile everything.
20 ### Installing the prerequisites for cross-compilation
22 There are only a few packages that need to be installed as root to get started:
24 > sudo apt-get install mingw32 wine git-core
25 > sudo apt-get build-dep tinc
27 ### Setting up the build directory and getting the sources
29 We will create a directory called `mingw/` in the home directory. We use
30 apt-get to get the required libraries necessary for tinc, and use `git` to get
31 the latest development version of tinc.
35 > apt-get source openssl liblzo2-dev zlib1g-dev
36 > git clone git://tinc-vpn.org/tinc
38 ### Making cross-compilation easy
40 To make cross-compiling easy, we create a script called `mingw` that will set
41 up the necessary environment variables so configure scripts and Makefiles will
42 use the MinGW version of GCC and binutils:
45 > cat >$HOME/bin/mingw << EOF
47 > export CC=i586-mingw32msvc-gcc
48 > export CXX=i586-mingw32msvc-g++
49 > export CPP=i586-mingw32msvc-cpp
50 > export RANLIB=i586-mingw32msvc-ranlib
51 > export PATH="/usr/i586-mingw32msvc/bin:$PATH"
55 If `$HOME/bin` is not already part of your `$PATH`, you need to add it:
57 > export PATH="$HOME/bin:$PATH"
59 We use this script to call `./configure` and `make` with the right environment
60 variables. You can also run the export commands from the `mingw` script by
61 hand instead of calling the mingw script for every `./configure` or `make`
62 command, or execute `$HOME/bin/mingw $SHELL` to get a shell with these
63 environment variables set, but in this howto we will call it explicitly every
68 Cross-compiling LZO is easy:
71 > mingw ./configure --host=mingw32
73 > DESTDIR=$HOME/mingw mingw make install
77 Cross-compiling Zlib is also easy, but a plain `make` failed to compile the
78 tests, so we only build the static library here:
80 > cd $HOME/mingw/zlib-1.2.3.3.dfsg
83 > DESTDIR=$HOME/mingw mingw make install
87 OpenSSL is always a bit hard to compile, because they have their own
88 `Configure` script that needs some tweaking. There is also a small bug in
89 e_os2.h that breaks compilation with recent versions of GCC. First download
90 this [[openssl-cross-compilation.diff]] to your home directory, then patch
91 OpenSSL, and then compile as usual. Do not use the `-j` option when compiling
92 OpenSSL, it will break.
94 > cd $HOME/mingw/openssl-0.9.8k
95 > patch < $HOME/openssl-cross-compilation.diff
96 > mingw ./Configure --openssldir=$HOME/mingw/usr/local mingw
102 Now that all the dependencies have been cross-compiled, we can cross-compile
103 tinc. Since we use a clone of the git repository here, we need to run
104 `autoreconf` first. If you want to cross-compile tinc from a released tarball,
105 this is not necessary.
107 > cd $HOME/mingw/tinc
109 > mingw ./configure --host=mingw32 --with-openssl=$HOME/mingw/usr/local
114 Since Wine was installed, you can execute the resulting binary even on Linux.
115 You cannot do much however, since tinc requires a TAP-Win32 device, which is
116 not available in Wine. Still, the following command should work:
118 > $HOME/mingw/tinc/src/tincd.exe --help