Messages in this thread | | | From | Arnd Bergmann <> | Date | Tue, 17 Oct 2017 20:47:06 +0200 | Subject | Re: more build problems with "Makefile: move stackprotector availability out of Kconfig" |
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On Tue, Oct 17, 2017 at 8:41 PM, Arnd Bergmann <arnd@arndb.de> wrote: > On Tue, Oct 17, 2017 at 8:26 PM, Kees Cook <keescook@chromium.org> wrote: >> On Tue, Oct 17, 2017 at 8:52 AM, Arnd Bergmann <arnd@arndb.de> wrote: >>> On Tue, Oct 17, 2017 at 5:34 PM, Kees Cook <keescook@chromium.org> wrote: > >>> index dbfb978..d5bc694 100755 >>> --- a/config.guess >>> +++ b/config.guess >>> @@ -1021,7 +1021,7 @@ EOF >>> echo ${UNAME_MACHINE}-dec-linux-${LIBC} >>> exit ;; >>> x86_64:Linux:*:*) >>> - echo ${UNAME_MACHINE}-unknown-linux-${LIBC} >>> + echo ${UNAME_MACHINE}-pc-linux-${LIBC} >>> exit ;; >>> xtensa*:Linux:*:*) >>> echo ${UNAME_MACHINE}-unknown-linux-${LIBC} >>> >>> I still don't know why that makes a difference, but all versions >>> prior to gcc-6.1 have the problem for me. >> >> What happens if you add -mstack-protector-guard=tls ? > > With gcc-4.8 an earlier, I get build failure: > > cc1: error: unrecognized command line option "-mstack-protector-guard=tls" > > With gcc-4.9 and gcc-5, I get this output: >
To clarify: with my gcc-4.9/gcc-5 build, -mstack-protector-guard=tls has no effect, the output is the same as with -mstack-protector-guard=global using the Ubuntu compilers of the same version.
Arnd
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