Looking at the results of ps afx with my build currently hung (see below), I see a bunch of defunct processes, and too many suspect make invocations to be sure who the culprit is.
Output of ps afx: 1593 pts/0 Ss 0:00 \_ bash 18272 pts/0 S+ 0:00 | \_ bash /home/ron/yocto_current/poky/scripts/hob 18273 pts/0 Sl+ 21:33 | \_ python /home/ron/yocto_current/poky/bitbake/bin/bitbake -u hob 18307 pts/0 Sl+ 4:21 | \_ python /home/ron/yocto_current/poky/bitbake/bin/bitbake -u hob 22938 pts/0 S+ 0:09 | \_ python /home/ron/yocto_current/poky/bitbake/bin/bitbake-worker decafbad 23432 ? Ss 0:03 | \_ python /home/ron/yocto_current/poky/bitbake/bin/bitbake-worker decafbad 23454 ? S 0:00 | \_ /bin/sh /home/ron/yocto_current/build/tmp/work/x86_64-linux/quilt-native/0.64-r0/temp/r 23455 ? S 0:00 | \_ make -j 2 23591 ? Z 0:00 | \_ [chmod] <defunct> 17527 pts/1 Ss 0:00 \_ bash 3643 pts/1 R+ 0:00 \_ ps axf 30572 ? Sl 0:00 /usr/lib/dconf/dconf-service 8032 ? S 0:00 make DESTDIR= RPATH_ENVVAR=LD_LIBRARY_PATH TARGET_SUBDIR=x86_64-poky-linux bindir=/var/yocto/production/build/tmp/s 9016 ? Z 0:00 \_ [bash] <defunct> 18499 ? Ssl 0:00 /usr/lib/colord/colord 21556 ? S 0:00 make all 21569 ? Z 0:00 \_ [gcc] <defunct> 21572 ? Z 0:00 \_ [gcc] <defunct> 9096 ? S 0:00 make all 9759 ? Z 0:00 \_ [gcc] <defunct> 18336 ? S 0:00 make DESTDIR=/var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/image RPATH_ENVVAR 18487 ? Z 0:00 \_ [bash] <defunct> 1493 ? S 0:01 make DESTDIR=/var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/image RPATH_ENVVAR 2471 ? Z 0:00 \_ [bash] <defunct> 30623 ? S 0:00 make all-am 30635 ? Z 0:00 \_ [rm] <defunct> 1908 ? S 0:00 make DESTDIR= RPATH_ENVVAR=LD_LIBRARY_PATH TARGET_SUBDIR=x86_64-poky-linux bindir=/var/yocto/production/build/tmp/s 2618 ? Z 0:00 \_ [bash] <defunct> 11197 ? S 0:00 make DESTDIR= RPATH_ENVVAR=LD_LIBRARY_PATH TARGET_SUBDIR=i586-poky-linux bindir=/var/yocto/production/build/tmp/sys 15202 ? Z 0:00 \_ [bash] <defunct> -- Output of ps axfww: 18272 pts/0 S+ 0:00 | \_ bash /home/ron/yocto_current/poky/scripts/hob 18273 pts/0 Sl+ 21:43 | \_ python /home/ron/yocto_current/poky/bitbake/bin/bitbake -u hob 18307 pts/0 Sl+ 4:22 | \_ python /home/ron/yocto_current/poky/bitbake/bin/bitbake -u hob 22938 pts/0 S+ 0:09 | \_ python /home/ron/yocto_current/poky/bitbake/bin/bitbake-worker decafbad 23432 ? Ss 0:03 | \_ python /home/ron/yocto_current/poky/bitbake/bin/bitbake-worker decafbad 23454 ? S 0:00 | \_ /bin/sh /home/ron/yocto_current/build/tmp/work/x86_64-linux/quilt-native/0.64-r0/temp/run.do_compile.23432 23455 ? S 0:00 | \_ make -j 2 23591 ? Z 0:00 | \_ [chmod] <defunct> 17527 pts/1 Ss 0:00 \_ bash 5523 pts/1 R+ 0:00 \_ ps axfww 30572 ? Sl 0:00 /usr/lib/dconf/dconf-service 8032 ? S 0:00 make DESTDIR= RPATH_ENVVAR=LD_LIBRARY_PATH TARGET_SUBDIR=x86_64-poky-linux bindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/x86_64-poky-linux.gcc-cross-initial-x86_64 datadir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share exec_prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr includedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include datarootdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share docdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ infodir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/info pdfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ htmldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ libdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib/x86_64-poky-linux.gcc-cross-initial-x86_64 libexecdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/libexec/x86_64-poky-linux.gcc-cross-initial-x86_64 lispdir= localstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/var mandir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/man oldincludedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr sbindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/x86_64-poky-linux.gcc-cross-initial-x86_64 sharedstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/com sysconfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/etc tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/x86_64-poky-linux build_tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/x86_64-poky-linux target_alias=x86_64-poky-linux AWK=gawk BISON=bison CC_FOR_BUILD=gcc CFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXX_FOR_BUILD=g++ CXXFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe EXPECT=expect FLEX=flex INSTALL=/usr/bin/install -c INSTALL_DATA=/usr/bin/install -c -m 644 INSTALL_PROGRAM=/usr/bin/install -c INSTALL_SCRIPT=/usr/bin/install -c LDFLAGS_FOR_BUILD=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LEX=flex M4=m4 MAKE=make RUNTEST=runtest RUNTESTFLAGS= SED=/bin/sed SHELL=/bin/bash YACC=bison -y XFOO= ADA_CFLAGS= AR_FLAGS=rc BOOT_ADAFLAGS=-gnatpg BOOT_CFLAGS=-g -O2 BOOT_LDFLAGS= CFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LDFLAGS=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LIBCFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LIBCXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -fno-implicit-templates STAGE1_CHECKING=--enable-checking=yes,types STAGE1_LANGUAGES=c GNATBIND=no GNATMAKE=no AR_FOR_TARGET=x86_64-poky-linux-ar AS_FOR_TARGET=x86_64-poky-linux-as CC_FOR_TARGET= /var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/gcc-5.2.0/build.x86_64-linux.x86_64-poky-linux/./gcc/xgcc -B/var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/gcc-5.2.0/build.x86_64-linux.x8 9016 ? Z 0:00 \_ [bash] <defunct> 18499 ? Ssl 0:00 /usr/lib/colord/colord 21556 ? S 0:00 make all 21569 ? Z 0:00 \_ [gcc] <defunct> 21572 ? Z 0:00 \_ [gcc] <defunct> 9096 ? S 0:00 make all 9759 ? Z 0:00 \_ [gcc] <defunct> 18336 ? S 0:00 make DESTDIR=/var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/image RPATH_ENVVAR=LD_LIBRARY_PATH TARGET_SUBDIR=x86_64-poky-linux bindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/x86_64-poky-linux.gcc-cross-initial-x86_64 datadir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share exec_prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr includedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include datarootdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share docdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ infodir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/info pdfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ htmldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ libdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib/x86_64-poky-linux.gcc-cross-initial-x86_64 libexecdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/libexec/x86_64-poky-linux.gcc-cross-initial-x86_64 lispdir= localstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/var mandir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/man oldincludedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr sbindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/x86_64-poky-linux.gcc-cross-initial-x86_64 sharedstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/com sysconfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/etc tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/x86_64-poky-linux build_tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/x86_64-poky-linux target_alias=x86_64-poky-linux AWK=gawk BISON=bison CC_FOR_BUILD=gcc CFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXX_FOR_BUILD=g++ CXXFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe EXPECT=expect FLEX=flex INSTALL=/usr/bin/install -c INSTALL_DATA=/usr/bin/install -c -m 644 INSTALL_PROGRAM=/usr/bin/install -c INSTALL_SCRIPT=/usr/bin/install -c LDFLAGS_FOR_BUILD=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LEX=flex M4=m4 MAKE=make RUNTEST=runtest RUNTESTFLAGS= SED=/bin/sed SHELL=/bin/bash YACC=bison -y XFOO= ADA_CFLAGS= AR_FLAGS=rc BOOT_ADAFLAGS=-gnatpg BOOT_CFLAGS=-g -O2 BOOT_LDFLAGS= CFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LDFLAGS=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LIBCFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LIBCXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -fno-implicit-templates STAGE1_CHECKING=--enable-checking=yes,types STAGE1_LANGUAGES=c GNATBIND=no GNATMAKE=no AR_FOR_TARGET=x86_64-poky-linux-ar AS_FOR_TARGET=x86_64-poky-linux-as CC_FOR_TARGET= /var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/gcc-5.2.0/build.x86_64-linux.x86_64-poky-linux/./gcc/xgcc -B/var/yocto/production/buil 18487 ? Z 0:00 \_ [bash] <defunct> 1493 ? S 0:01 make DESTDIR=/var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/image RPATH_ENVVAR=LD_LIBRARY_PATH TARGET_SUBDIR=x86_64-poky-linux bindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/x86_64-poky-linux.gcc-cross-initial-x86_64 datadir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share exec_prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr includedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include datarootdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share docdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ infodir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/info pdfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ htmldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ libdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib/x86_64-poky-linux.gcc-cross-initial-x86_64 libexecdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/libexec/x86_64-poky-linux.gcc-cross-initial-x86_64 lispdir= localstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/var mandir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/man oldincludedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr sbindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/x86_64-poky-linux.gcc-cross-initial-x86_64 sharedstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/com sysconfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/etc tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/x86_64-poky-linux build_tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/x86_64-poky-linux target_alias=x86_64-poky-linux AWK=gawk BISON=bison CC_FOR_BUILD=gcc CFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXX_FOR_BUILD=g++ CXXFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe EXPECT=expect FLEX=flex INSTALL=/usr/bin/install -c INSTALL_DATA=/usr/bin/install -c -m 644 INSTALL_PROGRAM=/usr/bin/install -c INSTALL_SCRIPT=/usr/bin/install -c LDFLAGS_FOR_BUILD=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LEX=flex M4=m4 MAKE=make RUNTEST=runtest RUNTESTFLAGS= SED=/bin/sed SHELL=/bin/bash YACC=bison -y XFOO= ADA_CFLAGS= AR_FLAGS=rc BOOT_ADAFLAGS=-gnatpg BOOT_CFLAGS=-g -O2 BOOT_LDFLAGS= CFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LDFLAGS=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LIBCFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LIBCXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -fno-implicit-templates STAGE1_CHECKING=--enable-checking=yes,types STAGE1_LANGUAGES=c GNATBIND=no GNATMAKE=no AR_FOR_TARGET=x86_64-poky-linux-ar AS_FOR_TARGET=x86_64-poky-linux-as CC_FOR_TARGET= /var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/gcc-5.2.0/build.x86_64-linux.x86_64-poky-linux/./gcc/xgcc -B/var/yocto/production/buil 2471 ? Z 0:00 \_ [bash] <defunct> 30623 ? S 0:00 make all-am 30635 ? Z 0:00 \_ [rm] <defunct> 1908 ? S 0:00 make DESTDIR= RPATH_ENVVAR=LD_LIBRARY_PATH TARGET_SUBDIR=x86_64-poky-linux bindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/x86_64-poky-linux.gcc-cross-initial-x86_64 datadir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share exec_prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr includedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include datarootdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share docdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ infodir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/info pdfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ htmldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ libdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib/x86_64-poky-linux.gcc-cross-initial-x86_64 libexecdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/libexec/x86_64-poky-linux.gcc-cross-initial-x86_64 lispdir= localstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/var mandir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/man oldincludedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr sbindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/x86_64-poky-linux.gcc-cross-initial-x86_64 sharedstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/com sysconfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/etc tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/x86_64-poky-linux build_tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/x86_64-poky-linux target_alias=x86_64-poky-linux AWK=gawk BISON=bison CC_FOR_BUILD=gcc CFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXX_FOR_BUILD=g++ CXXFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe EXPECT=expect FLEX=flex INSTALL=/usr/bin/install -c INSTALL_DATA=/usr/bin/install -c -m 644 INSTALL_PROGRAM=/usr/bin/install -c INSTALL_SCRIPT=/usr/bin/install -c LDFLAGS_FOR_BUILD=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LEX=flex M4=m4 MAKE=make RUNTEST=runtest RUNTESTFLAGS= SED=/bin/sed SHELL=/bin/bash YACC=bison -y XFOO= ADA_CFLAGS= AR_FLAGS=rc BOOT_ADAFLAGS=-gnatpg BOOT_CFLAGS=-g -O2 BOOT_LDFLAGS= CFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LDFLAGS=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LIBCFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LIBCXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -fno-implicit-templates STAGE1_CHECKING=--enable-checking=yes,types STAGE1_LANGUAGES=c GNATBIND=no GNATMAKE=no AR_FOR_TARGET=x86_64-poky-linux-ar AS_FOR_TARGET=x86_64-poky-linux-as CC_FOR_TARGET= /var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/gcc-5.2.0/build.x86_64-linux.x86_64-poky-linux/./gcc/xgcc -B/var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-x86_64/5.2.0-r0/gcc-5.2.0/build.x86_64-linux.x8 2618 ? Z 0:00 \_ [bash] <defunct> 11197 ? S 0:00 make DESTDIR= RPATH_ENVVAR=LD_LIBRARY_PATH TARGET_SUBDIR=i586-poky-linux bindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/i586-poky-linux.gcc-cross-initial-i586 datadir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share exec_prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr includedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include datarootdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share docdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ infodir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/info pdfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ htmldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/doc/ libdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib/i586-poky-linux.gcc-cross-initial-i586 libexecdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/libexec/i586-poky-linux.gcc-cross-initial-i586 lispdir= localstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/var mandir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/share/man oldincludedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include prefix=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr sbindir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/bin/i586-poky-linux.gcc-cross-initial-i586 sharedstatedir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/com sysconfdir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/etc tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/i586-poky-linux build_tooldir=/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/i586-poky-linux target_alias=i586-poky-linux AWK=gawk BISON=bison CC_FOR_BUILD=gcc CFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXX_FOR_BUILD=g++ CXXFLAGS_FOR_BUILD=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe EXPECT=expect FLEX=flex INSTALL=/usr/bin/install -c INSTALL_DATA=/usr/bin/install -c -m 644 INSTALL_PROGRAM=/usr/bin/install -c INSTALL_SCRIPT=/usr/bin/install -c LDFLAGS_FOR_BUILD=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LEX=flex M4=m4 MAKE=make RUNTEST=runtest RUNTESTFLAGS= SED=/bin/sed SHELL=/bin/bash YACC=bison -y XFOO= ADA_CFLAGS= AR_FLAGS=rc BOOT_ADAFLAGS=-gnatpg BOOT_CFLAGS=-g -O2 BOOT_LDFLAGS= CFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe CXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LDFLAGS=-L/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -L/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath-link,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/lib -Wl,-rpath,/var/yocto/production/build/tmp/sysroots/x86_64-linux/lib -Wl,-O1 LIBCFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe LIBCXXFLAGS=-isystem/var/yocto/production/build/tmp/sysroots/x86_64-linux/usr/include -O2 -pipe -fno-implicit-templates STAGE1_CHECKING=--enable-checking=yes,types STAGE1_LANGUAGES=c GNATBIND=no GNATMAKE=no AR_FOR_TARGET=i586-poky-linux-ar AS_FOR_TARGET=i586-poky-linux-as CC_FOR_TARGET= /var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-i586/5.2.0-r0/gcc-5.2.0/build.x86_64-linux.i586-poky-linux/./gcc/xgcc -B/var/yocto/production/build/tmp/work/x86_64-linux/gcc-cross-initial-i586/5.2.0-r0/gcc-5.2.0/build.x86_64-linux.i586-poky-linux/./gcc/ CFLAGS_FOR_TA 15202 ? Z 0:00 \_ [bash] <defunct> On Mon, Apr 11, 2016 at 9:49 PM, Ronald Oakes <rona...@brc2.com> wrote: > Thank you all. I'll try some more of the debugging if my current fix > attempt (using the current sources rather than the tar file, and > building the qemux86 first) don't work. > > I have 4 GBytes DRAM. I've never seen (at least not according to the > Gnome system monitor) my current memory usage exceed 60%, and swap > isn't getting touched at all. > > Ron O > > On Mon, Apr 11, 2016 at 7:52 PM, Chris Hallinan <challi...@gmail.com> wrote: >> I have very occasionally hit hung tasks, but I was usually able to identify >> the exact task which was hanging, it was never "many". Note that some tasks >> which may appear "hung" may be waiting for a dependency to complete. You >> could try some brute force debugging...set these in local.conf: >> >> BB_NUMBER_THREADS = "1" >> PARALLEL_MAKE = "-j1" >> >> Then try building again, and yes it will take a long time. >> >> if something is actually hanging, it would be useful to know what task, not >> only the bitbake "task" but the actual process as reported by ps. A bitbake >> "task" can spawn many processes as it works to complete it's job. >> >> In the past, once I found the hanging process, strace usually helped me >> discover why. >> >> You mention a "low-end" 2-core machine...RAM is everything. If you're >> running Linux out of memory, you get what you deserve <grin> >> >> Remember, poky-tiny refers to the resulting distribution you are building, >> not the machine you want to build it on ;) >> >> -Chris >> >> >> >> On Mon, Apr 11, 2016 at 9:38 PM, Ronald Oakes <rona...@brc2.com> wrote: >>> >>> It looks like it is hanging fairly consistently during the >>> gcc-cross-initial-x86_64-5.2.0-r0 do_compile or do_install steps. >>> I've tried stopping, cleaning, and just building >>> gcc-cross-initial-x86_64, but it still hangs. >>> >>> I'm going to try a 32 bit build just to see if I can get past this. >>> >>> Ron Oakes >>> >>> On Mon, Apr 11, 2016 at 12:35 PM, Andre McCurdy <armccu...@gmail.com> >>> wrote: >>> > On Mon, Apr 11, 2016 at 11:22 AM, Ronald Oakes <rona...@brc2.com> wrote: >>> >> Over the weekend, I upgraded my connected development platform to >>> >> Debian 8.4.0 from Centos 7. >>> >> >>> >> However, today I have yet to make a successful poky-tiny build for >>> >> either coreI7-64 or qemux86-64. In each case, I've aborted the build >>> >> after one or more tasks has stopped doing anything for 30 minutes or >>> >> more. >>> >> >>> >> I define "stopped doing anything" as having not touched a file in 30 >>> >> minutes, while the CPU utilization (on this 2 core, low end, ASUS >>> >> VivoPC) drops very low. >>> >> >>> >> I've tried re-running the offending recipes and tasks individually, >>> >> and cleaning and restarting from scratch, but I keep ending up with >>> >> something hung. >>> >> >>> >> Any ideas what is up, and, more importantly, what I should do to >>> >> resolve it? >>> > >>> > Have you used bitbake with the "--debug" option or run "ps axf" or >>> > similar to see which tasks or commands are hanging? >>> > >>> >> Ron Oakes >>> >> -- >>> >> _______________________________________________ >>> >> yocto mailing list >>> >> yocto@yoctoproject.org >>> >> https://lists.yoctoproject.org/listinfo/yocto >>> -- >>> _______________________________________________ >>> yocto mailing list >>> yocto@yoctoproject.org >>> https://lists.yoctoproject.org/listinfo/yocto >> >> >> >> >> -- >> Life is like Linux - it never stands still. >> -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto