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+---
+layout: post
+draft: true
+title: Building DXVK's DLLs on Gentoo
+
+TocOpen: true
+ShowToc: true
+---
+
+By far the easiest way to do it is on a Debian chroot, but that ain't as fun as
+building your own toolchains and do it on Gentoo.
+
+<hr>
+
+# Dependencies
+
+According to the official documentation:
+
+- wine 3.10 or newer
+- Meson build system (at least version 0.43)
+- MinGW64 compiler and headers (requires threading support)
+- glslang front end and validator
+
+{% highlight code %}
+
+# emerge virtual/wine dev-util/meson dev-util/glslang
+
+{% endhighlight %}
+
+## MinGW64
+
+MinGW with POSIX threads is needed, problem is by default crossdev will compile
+GCC with Win32 threads.
+
+Start by creating your toolchains, tuple for x86 is `i686-w64-mingw32` and
+`x86_64-w64-mingw32` for x64.
+
+{% highlight code %}
+
+# crossdev -t i686-w64-mingw32
+
+# crossdev -t x86_64-w64-mingw32
+
+{% endhighlight %}
+
+Fix GCC by enabling POSIX threads and adding the `libraries` USE to
+`mingw64-runtime`.
+
+{% highlight code %}
+
+# mkdir /etc/portage/{env,package.env}
+
+# echo 'EXTRA_ECONF="--enable-threads=posix"' > /etc/portage/env/mingw32_posix_threads
+
+# echo -e 'cross-i686-w64-mingw32/gcc mingw32_posix_threads\ncross-x86_64-w64-mingw32/gcc mingw32_posix_threads' > /etc/portage/package.env/mingw32_posix_threads
+
+{% endhighlight %}
+
+{% highlight code %} cross-i686-w64-mingw32/mingw64-runtime libraries
+cross-x86_64-w64-mingw32/mingw64-runtime libraries {% endhighlight %}
+
+Rebuild `mingw64-runtime` and `gcc`. Order matters, `mingw64-runtime` with
+`libraries` provides `pthreads.h` and other stuff that is needed to compile GCC
+with POSIX thread model.
+
+{% highlight code %}
+
+# emerge -1 cross-i686-w64-mingw32/mingw64-runtime cross-x86_64-w64-mingw32/mingw64-runtime
+
+# emerge -1 cross-i686-w64-mingw32/gcc cross-x86_64-w64-mingw32/gcc
+
+{% endhighlight %}
+
+_Depending on the runtime version, libraries may end up in the wrong place (see
+bug #653246), if that is the case sysmlink those and then rebuild GCC._ _eg_
+{% highlight code %}
+
+# ln -s /usr/x86_64-w64-mingw32/usr/lib64/{libmangle.a,libpthread.a,libpthread.dll.a,libwinpthread.a,libwinpthread.dll.a,libwinpthread.la} /usr/x86_64-w64-mingw32/usr/lib/
+
+{% endhighlight %}
+
+Final result should be:
+
+{% highlight code %}
+
+# i686-w64-mingw32-gcc -v
+
+# x86_64-w64-mingw32-gcc -v
+
+... Thread model: posix ... {% endhighlight %}
+
+# Crosscompiling DLLs
+
+{% highlight code %}
+
+# su user
+
+$ cd $ git clone https://github.com/doitsujin/dxvk.git $ cd dxvk
+
+### 32-bit build. For 64-bit builds, replace
+
+### build-win32.txt with build-win64.txt
+
+### build.w32 with build.w64
+
+$ meson --cross-file build-win32.txt --prefix /some/install/prefix build.w32 $
+cd build.w32/ $ meson configure -Dbuildtype=release $ ninja $ ninja install
+{% endhighlight %} {% highlight code %} $ ls /some/install/prefix/bin d3d11.dll
+dxgi.dll setup_dxvk.sh {% endhighlight %}
+
+These are the toolchains I used.
+
+{% highlight code %} cross-i686-w64-mingw32/binutils-2.30-r3
+cross-i686-w64-mingw32/gcc-7.3.0-r3 cross-i686-w64-mingw32/mingw64-runtime-5.0.4
+
+cross-x86_64-w64-mingw32/binutils-2.30-r3 cross-x86_64-w64-mingw32/gcc-7.3.0-r3
+
+### symlinks from ...lib64/ -> ...lib/ required! see bug #653246
+
+cross-x86_64-w64-mingw32/mingw64-runtime-5.0.4 {% endhighlight %}
+
+---
+
+#### [Original in spanish](/gnu/linux/2018/08/01/dxvk-gentoo/)