1 files changed, 63 insertions, 0 deletions
diff --git a/pkg/windows/openvpn-build.sh b/pkg/windows/openvpn-build.sh
new file mode 100755
index 00000000..7f8ed84f
--- /dev/null
+++ b/pkg/windows/openvpn-build.sh
@@ -0,0 +1,63 @@
+#!/bin/bash
+
+# render openvpn prepared for installer
+# ================================================
+#
+# requires
+#  - a linux host with mingw installed
+#  - a rw directory mounted to /var/build
+#  returns nonzero exit code when failed
+#
+# clone openvpn-build repository
+# runs cross-compile build
+# - downloads openvpn dependencies
+# - compiles
+# copy files to executables so they can be installed
+# cleans up (remove read-write copy)
+
+# the location where the openvpn binaries are placed
+absolute_executable_path=/var/build/executables
+temporary_build_path=/var/build/openvpn
+
+# cleanup the temporary build path for subsequent executes
+function cleanup() {
+  rm -r ${temporary_build_path} 2>/dev/null
+}
+# build openvpn source
+function buildSource() {
+  pushd ${temporary_build_path}/openvpn-build/generic
+  CHOST=i686-w64-mingw32 \
+  CBUILD=i686-pc-linux-gnu \
+  ./build \
+  || die 'build openvpn from source failed'
+  mkdir -p ${absolute_executable_path}
+  cp -r image/openvpn ${absolute_executable_path}/openvpn
+  popd
+}
+# fetch tap-windows.exe as defined in the openvpn vars
+function fetchTapWindows() {
+  pushd ${temporary_build_path}/openvpn-build
+  source windows-nsis/build-complete.vars
+  wget ${TAP_WINDOWS_INSTALLER_URL} -O ${absolute_executable_path}/openvpn/tap-windows.exe || die 'tap-windows.exe could not be fetched'
+  popd
+}
+# prepare read-write copy
+function prepareBuildPath() {
+  cleanup
+  mkdir -p ${temporary_build_path}
+  pushd ${temporary_build_path}
+  git clone https://github.com/OpenVPN/openvpn-build || die 'openvpn-build could not be cloned'
+  popd
+}
+# display failure message and emit non-zero exit code
+function die() {
+  echo "die:" $@
+  exit 1
+}
+function main() {
+  prepareBuildPath
+  buildSource
+  fetchTapWindows
+  cleanup
+}
+main $@