[crosstool-ng/crosstool-ng] 8397ad: Fix the build of elf2flt on Cygwin

[Alexey Neyman <stilor at att dot net>]

  Branch: refs/heads/master
  Home:   https://github.com/crosstool-ng/crosstool-ng
  Commit: 8397ad2c1a71992b441d73802f45be582c37b1e7
      https://github.com/crosstool-ng/crosstool-ng/commit/8397ad2c1a71992b441d73802f45be582c37b1e7
  Author: Alexey Neyman <stilor@att.net>
  Date:   2017-02-22 (Wed, 22 Feb 2017)

  Changed paths:
    A patches/elf2flt/4820f0dbb77cd6564d5fa0817218fe2a1fb99f32/100-no-lcygwin.patch
    M scripts/build/binutils/binutils.sh

  Log Message:
  -----------
  Fix the build of elf2flt on Cygwin

The -lcygwin -lc actually breaks the build: elf2flt picks up the symbols for getopt/optarg via
<getopt.h> in binutils-X.Y/include, where optarg is declared without dllimport attribute.
Therefore it pulls in getopt() from libc/libcygwin, but since optarg is not prefixed with
_imp__, it is pulled from libiberty. But the object file in libiberty also contains getopt()
thus resulting in multiple definitions thereof.

While there, kill extraneous -ldl passed into configure - configure detects -ldl successfully.

Upstream: https://github.com/uclinux-dev/elf2flt/pull/6
Signed-off-by: Alexey Neyman <stilor@att.net>


  Commit: 85ae00c1a6331d7738abb406a1eb59091c8a4535
      https://github.com/crosstool-ng/crosstool-ng/commit/85ae00c1a6331d7738abb406a1eb59091c8a4535
  Author: Alexey Neyman <stilor@att.net>
  Date:   2017-02-22 (Wed, 22 Feb 2017)

  Changed paths:
    A patches/elf2flt/4820f0dbb77cd6564d5fa0817218fe2a1fb99f32/100-no-lcygwin.patch
    M scripts/build/binutils/binutils.sh

  Log Message:
  -----------
  Merge pull request #614 from stilor/elf2flt-cygwin

Fix the build of elf2flt on Cygwin


Compare: https://github.com/crosstool-ng/crosstool-ng/compare/4de4507a6519...85ae00c1a633