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GNU Autoconf Archive branch master updated. v2015.09.25-15-ge3d948b

From: E-mail notifications for the Autoconf Archive git repository.
Subject: GNU Autoconf Archive branch master updated. v2015.09.25-15-ge3d948b
Date: Mon, 23 Nov 2015 10:56:54 +0000

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The branch, master has been updated
       via  e3d948b0303aabb8c016c7f3d7f1d538aa5472be (commit)
      from  3a8480edb2e6784f3d8f7e6e0b4181e70c626af0 (commit)

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- Log -----------------------------------------------------------------
commit e3d948b0303aabb8c016c7f3d7f1d538aa5472be
Author: Markus Armbruster <address@hidden>
Date:   Sun Nov 22 09:46:04 2015 +0100

    Behaves exactly like the optional INPUT argument of
    Motivation: I'd like to add -fstack-protector-strong.  The obvious
    solution is AX_APPEND_COMPILE_FLAGS([-fstack-protector-strong]).
    Unfortunately, some ports of the GNU toolchain reportedly pass this
    test, then fail to link.  That's because the compiler accepts the
    flag, duly emits references to helper code in libc (on my system:
    ___stack_chk_guard()), but libc doesn't provide, and linking fails.
    The new argument lets me cover this failure mode:
        AX_APPEND_LINK_FLAGS([-fstack-protector-strong], [], [],
        main(int argc, char *argv[])
            char arr[64], *dst = arr, *src = argv[0];
            while ((*dst++ = *src++)) ;
    Signed-off-by: Markus Armbruster <address@hidden>


Summary of changes:
 m4/ax_append_compile_flags.m4 |    8 +++++---
 m4/ax_append_link_flags.m4    |    8 +++++---
 2 files changed, 10 insertions(+), 6 deletions(-)

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