[issue35257] Avoid leaking linker flags into distutils: add PY_LDFLAGS_NODIST

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:

I repeated the same tests for Python 3.6 on PR 11265: all tests are ok!

I replaced "38" with "36" and "3.8" and 3.6" and my 3 scripts :-) I modified step1.sh for PGO+LTO and to compile with -O0 (just to make tests faster): similar script than in my previous message.

./configure CC=clang --with-lto --prefix /opt/py36

(1) 4 => OK!
(2) 0, False => OK!
(3) 0 => OK!

./configure CC=clang --with-lto --prefix /opt/py36 --enable-shared

(1) 4 => OK!
(2) 0, False => OK!
(3) 0 => OK!

./configure CC=clang --with-lto --prefix /opt/py36 --enable-optimizations

(1) 8 => OK!
(2) 0, False => OK!
(3) 0 => OK!

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<https://bugs.python.org/issue35257>
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