Building OpenOCD for OSX ------------------------ There are a few prerequisites you will need first: - Xcode 5 (install from the AppStore) - Command Line Tools (install from Xcode 5 -> Preferences -> Downloads) - Gentoo Prefix (http://www.gentoo.org/proj/en/gentoo-alt/prefix/bootstrap.xml) or - Homebrew (http://mxcl.github.io/homebrew/) or - MacPorts (http://www.macports.org/install.php) With Gentoo Prefix you can build the release version or the latest devel version (-9999) the usual way described in the Gentoo documentation. Alternatively, install the prerequisites and build manually from the sources. With Homebrew you can either run: brew install [--HEAD] openocd (where optional --HEAD asks brew to install the current git version) or brew install libtool automake libusb [libusb-compat] [hidapi] [libftdi] (to install the needed dependencies and then proceed with the manual building procedure) For building with MacPorts you need to run: sudo port install libtool automake autoconf pkgconfig \ libusb [libusb-compat] [libftdi1] You should also specify LDFLAGS and CPPFLAGS to allow configure to use MacPorts' libraries, so run configure like this: LDFLAGS=-L/opt/local/lib CPPFLAGS=-I/opt/local/include ./configure [options] See README for the generic building instructions. If you're using a USB adapter and have a driver kext matched to it, you will need to unload it prior to running OpenOCD. E.g. with Apple driver (OS X 10.9 or later) for FTDI run: sudo kextunload -b com.apple.driver.AppleUSBFTDI for FTDI vendor driver use: sudo kextunload FTDIUSBSerialDriver.kext To learn more on the topic please refer to the official libusb FAQ: https://github.com/libusb/libusb/wiki/FAQ