make[2]: *** [libjack_la-port.lo] Error 1
make[2]: *** Waiting for unfinished jobs....
 i686-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../config -I.. -I.. -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -Wall -g -march=i686 -O2 -pipe -DJACK_LOCATION=\"/usr/bin\" -I../config -I.. -I.. -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -Wall -g -march=i686 -O2 -pipe -march=i686 -MT libjack_la-ringbuffer.lo -MD -MP -MF .deps/libjack_la-ringbuffer.Tpo -c ringbuffer.c  -fPIC -DPIC -o .libs/libjack_la-ringbuffer.o
make[2]: Leaving directory `/var/tmp/portage/jack-audio-connection-kit-0.102.20/work/jack-audio-connection-kit-0.102.20/libjack'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/jack-audio-connection-kit-0.102.20/work/jack-audio-connection-kit-0.102.20'
make: *** [all] Error 2

!!! ERROR: media-sound/jack-audio-connection-kit-0.102.20 failed.
Call stack:
  ebuild.sh, line 1546:   Called dyn_compile
  ebuild.sh, line 937:   Called src_compile
  jack-audio-connection-kit-0.102.20.ebuild, line 115:   Called die

!!! compilation failed
!!! If you need support, post the topmost build error, and the call stack if relevant.

!!! This ebuild is from an overlay: '/usr/portage/local/layman/pro-audio'