diff --git a/.gitignore b/.gitignore
index 2e66e21..d10fb3a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
-*.ovpn
\ No newline at end of file
+*.ovpn
+build/
\ No newline at end of file
diff --git a/build-all.sh b/build-all.sh
new file mode 100755
index 0000000..b2c135f
--- /dev/null
+++ b/build-all.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -e
+rm -rf openvpn3/bridge/*.a openvpn3/bridge/*.h
+docker run -it --rm -v `pwd`/build:/build -w /build -v `pwd`:/go-src-root --entrypoint /go-src-root/scripts/build-on-xgo.sh karalabe/xgo-base
+
+#We cross compile for windows on latest ubuntu because xgo-base has older ubuntu and older mingw with windows headers which are missing
+docker build -t mingw-crosscompile -f scripts/Dockerfile-mingw-ubuntu . && \
+docker run -it --rm -v `pwd`/build:/build -w /build -v `pwd`:/go-src-root --entrypoint /go-src-root/scripts/build-on-mingw.sh mingw-crosscompile
diff --git a/openvpn3/bridge/copy.sh b/openvpn3/bridge/copy.sh
deleted file mode 100755
index 43869ed..0000000
--- a/openvpn3/bridge/copy.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/bin/bash
-#Copies header ant static library from given dir
-#Usage:
-# ./copy.sh <from dir> <to dir>
-cp -f $1/adapter/library.h $2/.
-cp -f $1/adapter/libopenvpn3.a $2/.
\ No newline at end of file
diff --git a/openvpn3/bridge/libopenvpn3.a b/openvpn3/bridge/libopenvpn3.a
deleted file mode 100644
index f70f26f..0000000
Binary files a/openvpn3/bridge/libopenvpn3.a and /dev/null differ
diff --git a/openvpn3/bridge/libopenvpn3_darwin_amd64.a b/openvpn3/bridge/libopenvpn3_darwin_amd64.a
new file mode 100644
index 0000000..531f652
Binary files /dev/null and b/openvpn3/bridge/libopenvpn3_darwin_amd64.a differ
diff --git a/openvpn3/bridge/libopenvpn3_linux_amd64.a b/openvpn3/bridge/libopenvpn3_linux_amd64.a
new file mode 100644
index 0000000..6d88953
Binary files /dev/null and b/openvpn3/bridge/libopenvpn3_linux_amd64.a differ
diff --git a/openvpn3/bridge/libopenvpn3_windows_amd64.a b/openvpn3/bridge/libopenvpn3_windows_amd64.a
new file mode 100644
index 0000000..dd581b3
Binary files /dev/null and b/openvpn3/bridge/libopenvpn3_windows_amd64.a differ
diff --git a/openvpn3/session.go b/openvpn3/session.go
index 99d91be..6057407 100644
--- a/openvpn3/session.go
+++ b/openvpn3/session.go
@@ -6,7 +6,11 @@ package openvpn3
 #cgo LDFLAGS: -lstdc++
 
 #cgo LDFLAGS: -L${SRCDIR}/bridge
-#cgo LDFLAGS: -lopenvpn3
+//main lib link
+//TODO reuse GOOS somehow?
+#cgo darwin LDFLAGS: -lopenvpn3_darwin_amd64
+#cgo linux LDFLAGS: -lopenvpn3_linux_amd64
+#cgo windows LDFLAGS: -lopenvpn3_windows_amd64
 //TODO copied from openvpnv3 lib build tool - do we really need all of this?
 #cgo darwin LDFLAGS: -framework Security -framework CoreFoundation -framework SystemConfiguration -framework IOKit -framework ApplicationServices
 
diff --git a/scripts/Dockerfile-mingw-ubuntu b/scripts/Dockerfile-mingw-ubuntu
new file mode 100644
index 0000000..6cba75e
--- /dev/null
+++ b/scripts/Dockerfile-mingw-ubuntu
@@ -0,0 +1,13 @@
+FROM ubuntu:18.04
+
+# Make sure apt-get is up to date and dependent packages are installed
+RUN \
+  apt-get update && \
+  apt-get install -y automake autogen build-essential ca-certificates \
+    gcc-mingw-w64 g++-mingw-w64 \
+    make xz-utils cpio wget zip unzip git texinfo help2man \
+    --no-install-recommends
+
+# Fix any stock package issues
+RUN ln -s /usr/include/asm-generic /usr/include/asm
+ENTRYPOINT ["/bin/bash"]
diff --git a/scripts/build-on-mingw.sh b/scripts/build-on-mingw.sh
new file mode 100755
index 0000000..76231a0
--- /dev/null
+++ b/scripts/build-on-mingw.sh
@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -e
+
+export O3=`pwd`
+export DEP_DIR=`pwd`/dep_dir
+mkdir -p $DEP_DIR
+export DL=/build/dls
+mkdir -p $DL
+
+echo "Deps are in: $DEP_DIR"
+echo "DLs go to: $DL"
+echo "O3 is: $O3"
+
+/go-src-root/scripts/x-compile-windows.sh
\ No newline at end of file
diff --git a/scripts/build-on-xgo.sh b/scripts/build-on-xgo.sh
new file mode 100755
index 0000000..169a36a
--- /dev/null
+++ b/scripts/build-on-xgo.sh
@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+set -e
+
+. /go-src-root/scripts/helpers.sh
+rm -rf core
+fetch_openvpn3
+
+cp -f core/adapter/library.h /go-src-root/openvpn3/bridge/.
+
+export O3=`pwd`
+export DEP_DIR=`pwd`/dep_dir
+mkdir -p $DEP_DIR
+export DL=/build/dls
+mkdir -p $DL
+
+echo "Deps are in: $DEP_DIR"
+echo "DLs go to: $DL"
+echo "O3 is: $O3"
+
+/go-src-root/scripts/x-compile-linux.sh
+/go-src-root/scripts/x-compile-mac.sh
\ No newline at end of file
diff --git a/scripts/concat-libs.sh b/scripts/concat-libs.sh
new file mode 100755
index 0000000..a023978
--- /dev/null
+++ b/scripts/concat-libs.sh
@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -e
+#Usage ./concat-libs.sh outputlib.a <list of o files>
+outputLib=$1
+shift
+
+mkdir -p objs
+pushd objs
+    for lib in ${MORE_LIBS[@]}; do
+        echo "Extracting $lib"
+        $AR_CMD x $lib
+    done
+popd
+
+$AR_CMD rc $outputLib \
+    objs/*.o \
+    ${@}
+rm -rf objs
diff --git a/scripts/helpers.sh b/scripts/helpers.sh
new file mode 100755
index 0000000..c4d961c
--- /dev/null
+++ b/scripts/helpers.sh
@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+function fetch_openvpn3() {
+    git clone https://github.com/MysteriumNetwork/openvpn3.git core
+}
\ No newline at end of file
diff --git a/scripts/x-compile-linux.sh b/scripts/x-compile-linux.sh
new file mode 100755
index 0000000..c8ab27b
--- /dev/null
+++ b/scripts/x-compile-linux.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -e
+
+PLATFORM=linux
+SCRIPTS=linux
+LIBSUFFIX=linux_amd64
+
+echo "Building for: $PLATFORM"
+
+core/scripts/$SCRIPTS/build-all
+
+. core/vars/setpath
+. core/vars/vars-linux
+
+cd core/adapter
+PROF=$PLATFORM MTLS=1 NOSSL=1 LZ4=1 ASIO=1 ECHO=1 CO=1 build library
+
+LIB_OUT="/go-src-root/openvpn3/bridge/libopenvpn3_${LIBSUFFIX}.a"
+rm -rf $LIB_OUT
+
+libs=("$DEP_DIR/mbedtls/mbedtls-$PLATFORM/library/libmbedtls.a" \
+"$DEP_DIR/lz4/lz4-$PLATFORM/lib/liblz4.a" )
+
+MORE_LIBS=${libs[@]} /go-src-root/scripts/concat-libs.sh $LIB_OUT library.o
+
+$RANLIB_CMD $LIB_OUT | grep -v "has no symbols" || true
diff --git a/scripts/x-compile-mac.sh b/scripts/x-compile-mac.sh
new file mode 100755
index 0000000..6cb3f7c
--- /dev/null
+++ b/scripts/x-compile-mac.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+set -e
+#x-compile.sh <profile>
+#where profile can be linux | osx | mingw (windows)
+
+PLATFORM=osx
+SCRIPTS=mac
+LIBSUFFIX=darwin_amd64
+
+echo "Building for: $PLATFORM"
+
+OSX_ONLY=1 "core/scripts/$SCRIPTS/build-all"
+
+. core/vars/setpath
+
+
+cd core/adapter
+PROF=$PLATFORM MTLS=1 NOSSL=1 LZ4=1 ASIO=1 ECHO=1 CO=1 build library
+
+LIB_OUT="/go-src-root/openvpn3/bridge/libopenvpn3_${LIBSUFFIX}.a"
+rm -rf $LIB_OUT
+
+x86_64-apple-darwin15-libtool -static -o $LIB_OUT \
+    $DEP_DIR/mbedtls/mbedtls-$PLATFORM/library/libmbedtls.a \
+    $DEP_DIR/lz4/lz4-$PLATFORM/lib/liblz4.a \
+    library.o
diff --git a/scripts/x-compile-windows.sh b/scripts/x-compile-windows.sh
new file mode 100755
index 0000000..9bbd232
--- /dev/null
+++ b/scripts/x-compile-windows.sh
@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+set -e
+#x-compile.sh <profile>
+#where profile can be linux | osx | mingw (windows)
+
+PLATFORM=mingw
+SCRIPTS=win
+LIBSUFFIX=windows_amd64
+
+echo "Building for: $PLATFORM"
+
+"core/scripts/$SCRIPTS/build-all"
+
+. core/vars/setpath
+. core/vars/vars-$PLATFORM
+cd core/adapter
+PROF=$PLATFORM MTLS=1 NOSSL=1 LZ4=1 ASIO=1 ECHO=1 CO=1 build library
+
+LIB_OUT="/go-src-root/openvpn3/bridge/libopenvpn3_${LIBSUFFIX}.a"
+rm -rf $LIB_OUT
+
+libs=("$DEP_DIR/mbedtls/mbedtls-$PLATFORM/library/libmbedtls.a" \
+"$DEP_DIR/lz4/lz4-$PLATFORM/lib/liblz4.a" )
+
+MORE_LIBS=${libs[@]} /go-src-root/scripts/concat-libs.sh $LIB_OUT library.o
+
+$RANLIB_CMD $LIB_OUT | grep -v "has no symbols" || true