Update Shared libraries (buildfiles)

diff --git a/Shared-libraries-(buildfiles).md b/Shared-libraries-(buildfiles).md
index 0c43b50d889ec6092c34b1bf2c31fc5b1c4468d5..75efcd71f7ff563a44c3e497d36adda2c6eb0ced 100644 (file)
--- a/Shared-libraries-(buildfiles).md
+++ b/Shared-libraries-(buildfiles).md
@@ -187,6 +187,33 @@ Obtainment instructions:
 * download MSYS2 Package [1] in x86 and x64 versions: https://packages.msys2.org/base/mingw-w64-libvorbis
 * use dll from `bin` folder
 
+Cross-compiling:
+
+```
+d0=$(pwd)
+OGG_ROOT=$d0/../ogg/out
+VORBISVER="v1.3.7"
+
+git clone -b $VORBISVER https://gitlab.xiph.org/xiph/vorbis.git
+
+# Fix win32 def files
+sed -i 's/^LIBRARY$/LIBRARY libvorbis/' "$d0/vorbis/win32/vorbis.def"
+sed -i 's/^LIBRARY$/LIBRARY libvorbisenc/' "$d0/vorbis/win32/vorbisenc.def"
+sed -i 's/^LIBRARY$/LIBRARY libvorbisfile/' "$d0/vorbis/win32/vorbisfile.def"
+
+curl -o x86_64-w64-mingw32.cmake https://raw.githubusercontent.com/zyga/cmake-toolchains/master/Toolchain-Ubuntu-mingw64.cmake
+rm -rf build
+mkdir build
+cd build
+cmake -DCMAKE_TOOLCHAIN_FILE="$d0/x86_64-w64-mingw32.cmake" -DBUILD_SHARED_LIBS=true -DOGG_INCLUDE_DIR=$OGG_ROOT/include -DOGG_LIBRARY=$OGG_ROOT/lib/libogg.dll.a -DCMAKE_SYSTEM_PROCESSOR=x86_64 -DCMAKE_INSTALL_PREFIX="$d0/out" -G"Unix Makefiles" "$d0/vorbis"
+make
+make install
+cd "$d0"
+cp out/bin/libvorbis.dll ~/Games/xonotic/misc/buildfiles/win64/libvorbis-0.dll
+cp out/bin/libvorbisfile.dll ~/Games/xonotic/misc/buildfiles/win64/libvorbisfile-3.dll
+cp out/bin/libvorbisenc.dll ~/Games/xonotic/misc/buildfiles/win64/libvorbisenc-2.dll
+```
+
 ### macOS
 Darkplaces loads `libvorbis.dylib` and `libvorbisfile.dylib`