[Bug math/20539] GCC 7 -static -lm fails to link at -O3

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=20539

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       via  cbd8f9302c9a04bf4fe72a3a1a641faf07614552 (commit)
      from  23b5cae1af04f2d912910fdaf73cb482265798c1 (commit)

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cbd8f9302c9a04bf4fe72a3a1a641faf07614552

commit cbd8f9302c9a04bf4fe72a3a1a641faf07614552
Author: Andrew Senkevich <andrew.senkevich@intel.com>
Date:   Thu Dec 8 17:25:59 2016 +0300

    Install libm.a as linker script (bug 20539).

    Install libm.a as linker script to avoid static link fail w/o passing
    additional -lmvec option while building with GCC >= 6.1.

        [BZ #20539]
        * math/Makefile (install-lib-ldscripts): Add libm.a.
        (install_subdir): Remove.
        (install-others): Add.
        ($(inst_libdir)/libm.a): Add rule for installation as
        linker script.
        * Makerules (install-lib.a): Filter out install-lib-ldscripts.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog     |   10 ++++++++++
 Makerules     |    1 +
 math/Makefile |   19 +++++++++++++++----
 3 files changed, 26 insertions(+), 4 deletions(-)

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