On NetBSD, you might want to install requirements from pkgsrc. In that case, you need at least the following packages.
- automake
- libtool-base
- gmake
- python27
- py27-xml
- pkg_alternatives
Some components have additional requirements. (See INSTALL.md)
Assuming you are running NetBSD/amd64 6.1.2, you can download and install pre-built binary packages as the following. (You might get some warnings about minor version mismatch. Don't care.)
```
# PKG_PATH=http://ftp.netbsd.org/pub/pkgsrc/packages/NetBSD/amd64/6.1.2/All/
# export PKG_PATH
# pkg_add automake libtool-base gmake python27 py27-xml pkg_alternatives
```
NetBSD's /usr/bin/make is not GNU make. GNU make is installed as
/usr/pkg/bin/gmake by the above mentioned gmake package.
As all executables installed with pkgsrc are placed in /usr/pkg/bin/
directory, it might be a good idea to add it to your PATH.
Open vSwitch on NetBSD is currently "userspace switch" implementation in the sense described in INSTALL.userspace.md and PORTING.md.