I emerged openocd and it failed to detect the cmsis-dap adapter (Atmel Ice). It connected OK after I added these flags to the ebuild: --enable-maintainer-mode --enable-cmsis-dap --enable-hidapi-libusb My use flags: dev-embedded/openocd-0.8.0 USE="cmsis-dap ftdi parport usb verbose-io -dummy" Reproducible: Always Steps to Reproduce: 1. Build openocd 2. Try to connect to remote cmsis-dap device Actual Results: openocd fails to detect the device Expected Results: Device should be detected # emerge --info Portage 2.2.8-r2 (default/linux/amd64/13.0/desktop, gcc-4.7.3, glibc-2.19-r1, 3.16.5-gentoo-a x86_64) ================================================================= System uname: Linux-3.16.5-gentoo-a-x86_64-Intel-R-_Core-TM-_i7-3632QM_CPU_@_2.20GHz-with-gentoo-2.2 KiB Mem: 8005356 total, 362192 free KiB Swap: 8388604 total, 7707572 free Timestamp of tree: Fri, 28 Nov 2014 14:45:01 +0000 ld GNU ld (Gentoo 2.24 p1.4) 2.24 app-shells/bash: 4.2_p53 dev-java/java-config: 2.2.0 dev-lang/perl: 5.18.2-r2 dev-lang/python: 2.7.7, 3.3.5-r1, 3.4.1 dev-util/cmake: 3.0.2 dev-util/pkgconfig: 0.28-r1 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.12.4 sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.11.6-r1, 1.12.6, 1.13.4 sys-devel/binutils: 2.24-r3 sys-devel/gcc: 4.5.4, 4.6.4, 4.7.3-r1, 4.8.3 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4.2-r1 sys-devel/make: 4.0-r1 sys-kernel/linux-headers: 3.16 (virtual/os-headers) sys-libs/glibc: 2.19-r1 Repositories: gentoo x-portage ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="*" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--jobs=6 --keep-going --with-bdeps=y" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs buildpkg config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="rsync://blake.myftp.org/ ftp://mirror.mcs.anl.gov/pub/gentoo/ rsync://rsync.us.gentoo.org/gentoo-portage" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j9" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://blake.myftp.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 bash-completion berkdb branding bzip2 cairo cdda cdr cleartype cli consolekit corefonts cracklib crypt crypto cups cxx dbus dri dts dvd dvdr ebook emboss encode exif firefox flac fortran gdbm gif glamor gpm gtk iconv icu ipv6 jpeg lcms libnotify mad mesa mga mmx mng modules mp3 mp4 mpeg multilib ncurses nls nptl ogg opengl openmp pam pango pcre pdf png policykit ppds pulseaudio qt3support qt4 rdesktop readline sdl session spell sse sse2 ssl startup-notification svg tcpd tiff truetype type1 udev udisks unicode upower usb vorbis wxgtk1 wxwidgets wxwindows x264 xcb xml xv xvid zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev keyboard mouse synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en en_US" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="intel vesa" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" USE_PYTHON="2.7 3.3" Unset: CPPFLAGS, CTARGET, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Blake, Both --enable-maintainer-mode and --enable-hidapi-libusb options are not present in OpenOCD's configure so they can't have any effect. --enable-cmsis-dap should have got added automatically since you have cmsis-dap use-flag. Also, cmsis-dap support is autoenabled anyway, provided you have hidapi library installed, and cmsis-dap useflag adds it as a dependency. So please check twice what happens when you build with cmsis-dap flag. On my system it properly outputs "CMSIS-DAP Compliant Debugger yes" at the end of configure. And then please also provide openocd invocation log as "failed to detect" might mean it doesn't see it on USB bus (e.g. a permissions issue) or it might mean openocd says "cmsis-dap transport is not available". On a slightly related note, this patch: http://openocd.zylin.com/#/c/2356/ should improve cmsis-dap performance a lot but it's known to have issues with Atmel's implementation. If you feel like hacking on it, it'd be great, as it's likely missing just a small tweak to start working properly. HTH
