On 11/24/15 3:23 PM, Mark Hatle wrote: > My guess is that there is a bug in the python integration where it's not > realizing the host and target are different systems, so it's trying to run a > target program on your host. Your host isn't haswell, so... Illegal > Instruction > -- and the system stops.
Just an FYI, I hit the same problem today. I suspect it is the host trying to run target software and I'm looking into it. --Mark > The alternative would be something is running QEMU to execute a target binary > and QEMU doesn't have instruction support -- but that doesn't look like the > case > here. > > --Mark > > On 11/24/15 3:06 PM, Michael Habibi wrote: >> All, >> >> I added a new machine definition with tuning parameters for haswell >> microarchitectures (basically just duplicated corei7 but tuned it for >> haswell). >> This seems to work correctly, but failed when running do_install for python >> toward the end of the build process. I am running with the Yocto 2.0 >> framework, >> with very minimal changes to create a new distribution and machine for our >> custom embedded device. Note I had this distro configuration working before, >> and >> the only difference is I added a new machine with this tuning. >> >> I believe the issue is because, as part of the do_install step for Python, it >> attempts to run python on the local host, despite being cross-compiled. >> However, >> it is tuned for a processor that my host machine doesn't run, so I get an >> instruction exception. >> >> Did I do something weird? I figure python would be configured for >> cross-compiling and therefore wouldn't try to run the target version on the >> host, even for sanity tests. Here is the output of the failure: >> >> $ tail -20 >> /projects/yocto-git/build/tmp/work/haswell-diags-linux/python/2.7.9-r1/temp/log.do_install.17258 >> >> x86_64-diags-linux-ar rc libpython2.7.a Modules/threadmodule.o >> Modules/signalmodule.o Modules/posixmodule.o Modules/errnomodule.o >> Modules/pwdmodule.o Modules/_sre.o Modules/_codecsmodule.o >> Modules/_weakref.o Modules/zipimport.o Modules/symtablemodule.o >> Modules/md5module.o Modules/md5.o Modules/xxsubtype.o >> x86_64-diags-linux-ranlib libpython2.7.a >> Modules/posixmodule.o: In function `posix_tmpnam': >> /projects/yocto-git/build/tmp/work/haswell-diags-linux/python/2.7.9-r1/Python-2.7.9/Modules/posixmodule.c:7575: >> warning: the use of `tmpnam_r' is dangerous, better use `mkstemp' >> Modules/posixmodule.o: In function `posix_tempnam': >> /projects/yocto-git/build/tmp/work/haswell-diags-linux/python/2.7.9-r1/Python-2.7.9/Modules/posixmodule.c:7522: >> warning: the use of `tempnam' is dangerous, better use `mkstemp' >> x86_64-diags-linux-gcc -m64 -march=haswell -mtune=haswell -mfpmath=sse >> -mavx2 >> --sysroot=/projects/yocto-git/build/tmp/sysroots/continental -Wl,-O1 >> -Wl,--hash-style=gnu -Wl,--as-needed -Xlinker -export-dynamic -o python \ >> Modules/python.o \ >> -L. -lpython2.7 -lpthread -ldl -lpthread -lutil >> -lm >> _PYTHON_PROJECT_BASE=/projects/yocto-git/build/tmp/work/haswell-diags-linux/python/2.7.9-r1/build >> _PYTHON_HOST_PLATFORM=linux2-x86_64 >> PYTHONPATH=/projects/yocto-git/build/tmp/work/haswell-diags-linux/python/2.7.9-r1/build/build/lib.linux2-x86_64-2.7:/projects/yocto-git/build/tmp/work/haswell-diags-linux/python/2.7.9-r1/Python-2.7.9/Lib:/projects/yocto-git/build/tmp/work/haswell-diags-linux/python/2.7.9-r1/Python-2.7.9/Lib/plat-linux2 >> python2.7 -S -m sysconfig --generate-posix-vars ;\ >> if test $? -ne 0 ; then \ >> echo "generate-posix-vars failed" ; \ >> rm -f ./pybuilddir.txt ; \ >> exit 1 ; \ >> fi >> Illegal instruction (core dumped) >> make: *** [sharedmods] Error 132 >> WARNING: exit code 1 from a shell command. >> ERROR: oe_runmake failed >> ERROR: Function failed: do_install (log file is located at >> /projects/yocto-git/build/tmp/work/haswell-diags-linux/python/2.7.9-r1/temp/log.do_install.17258) >> >> Here is my tune-haswell.inc (ignore some copy/paste comment issues right now >> =): >> >> # Settings for the GCC(1) cpu-type "haswell": >> # >> # Intel Core i7 CPU with 64-bit extensions, MOVBE, MMX, SSE, SSE2, SSE3,ยท >> # SSSE3, SSE4.1, SSE4.2, POPCNT, AVX, AVX2, AES, PCLMUL, FSGSBASE, >> # RDRND, FMA, BMI, BMI2 and F16C instruction set support. >> # >> # This tune is recommended for Intel Nehalem and Silvermont (e.g. Bay Trail) >> CPUs >> # (and beyond). >> # >> DEFAULTTUNE ?= "haswell" >> >> # Pull in the previous tune in to pull in PACKAGE_EXTRA_ARCHS >> require conf/machine/include/tune-corei7.inc >> >> # Extra tune features >> TUNEVALID[haswell] = "Enable haswell specific processor optimizations" >> TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "haswell", " >> -march=haswell -mtune=haswell -mfpmath=sse -mavx2", "", d)}" >> >> # Extra tune selections >> AVAILTUNES += "haswell" >> TUNE_FEATURES_tune-haswell = "${TUNE_FEATURES_tune-x86-64} haswell" >> BASE_LIB_tune-haswell = "lib" >> TUNE_PKGARCH_tune-haswell = "haswell" >> PACKAGE_EXTRA_ARCHS_tune-haswell = "${PACKAGE_EXTRA_ARCHS_tune-corei7} >> haswell" >> >> >> > -- _______________________________________________ yocto mailing list yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/yocto