Sent from my iPad
> On Oct 16, 2016, at 10:52 PM, Kang Kai <[email protected]> wrote: > >> On 2016年10月14日 17:32, Khem Raj wrote: >>> On Fri, Oct 14, 2016 at 11:02 AM, Kang Kai <[email protected]> wrote: >>> On 2016年10月13日 22:59, Burton, Ross wrote: >>> >>> >>>> On 13 October 2016 at 15:40, Kang Kai <[email protected]> wrote: >>>> gcc checks tsan and lsan support in source file >>>> gcc/libsanitizer/configure.tgt, it seems only support x86_64. Then tsan and >>>> lsan related packages will be empty for other target. >>>> For qemuarm project, add in local.conf: >>>> >>>> IMAGE_INSTALL_append = " libtsan" >>> >>> If libtsan is x86-64 only, why not only add it for x86-64 images? The >>> package not existing on machines it can't be built for is more obvious than >>> existing but being empty. >>> >>> >>> The real scenario is for x86-64 kernel with x86 rootfs. We created a >>> template to enable gcc sanitize support. It just simple adds sanitize >>> related packages to image: >>> >>> LIBX_DEV ?= "" >>> LIBX_DEV_x86-64 = "liblsan-dev libtsan-dev" >>> >>> IMAGE_INSTALL += " \ >>> gcc-sanitizers \ >>> libasan-dev \ >>> libubsan-dev \ >>> ${LIBX_DEV} \ >>> " >>> >>> When multilib is enabled, it fails for x86-64 kernel with x86 rootfs such as >>> lib32-xxx-image on qemux86-64. Var IMAGE_INSTALL will be expand with prefix >>> lib32 but lib32-lsan* and lib32-tsan* are empty then cause the failures. >> perhaps we should build sanitizers for multilib too ? > > The problem is that thread and leak sanitizers are not supported for x86 by > checking in gcc/libsanitizer/configure.tgt: > > > # Filter out unsupported systems. > TSAN_TARGET_DEPENDENT_OBJECTS= > case "${target}" in > x86_64-*-linux* | i?86-*-linux*) > if test x$ac_cv_sizeof_void_p = x8; then > TSAN_SUPPORTED=yes > LSAN_SUPPORTED=yes > TSAN_TARGET_DEPENDENT_OBJECTS=tsan_rtl_amd64.lo > fi > ;; > ... > > that causes packages lib32-lsan* and lib32-tsan* are empty. Ok then may be keeping the empty packages is ok even though not optimal > > > --Kai > >> >>> Regards, >>> Kai >>> >>> >>> Ross >>> >>> >>> >>> -- >>> Regards, >>> Neil | Kai Kang > > > -- not > Regards, > Neil | Kai Kang > -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
