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Commitfefd3d2

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bpo-41916: allow cross-compiled python to have -pthread set for CXX
When cross-compiling, the compile/run test for -pthread always fails so -pthreadwill never be automatically set without an override from the cache. ac_cv_pthreadcan already be overridden, so do the same thing for ac_cv_cxx_thread.
1 parentb863b9c commitfefd3d2

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+19
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3 files changed

+19
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Allow override of ac_cv_cxx_thread so that cross compiled python can set
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-pthread for CXX.

‎configure

Lines changed: 10 additions & 3 deletions
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‎configure.ac

Lines changed: 7 additions & 5 deletions
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@@ -2664,11 +2664,10 @@ fi
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# If we have set a CC compiler flag for thread support then
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# check if it works for CXX, too.
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ac_cv_cxx_thread=no
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if test ! -z "$CXX"
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then
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AC_MSG_CHECKING(whether$CXXalsoacceptsflagsforthreadsupport)
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ac_save_cxx="$CXX"
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AC_CACHE_CHECK([whether $CXX also accepts flags for thread support],[ac_cv_cxx_thread],
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[ac_save_cxx="$CXX"
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if test "$ac_cv_kpthread" = "yes"
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then
@@ -2682,6 +2681,8 @@ elif test "$ac_cv_pthread" = "yes"
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then
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CXX="$CXX -pthread"
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ac_cv_cxx_thread=yes
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else
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ac_cv_cxx_thread=no
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fi
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if test $ac_cv_cxx_thread = yes
@@ -2697,9 +2698,10 @@ then
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fi
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rm -fr conftest*
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fi
2700-
AC_MSG_RESULT($ac_cv_cxx_thread)
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CXX="$ac_save_cxx"])
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else
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ac_cv_cxx_thread=no
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fi
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CXX="$ac_save_cxx"
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dnl # check for ANSI or K&R ("traditional") preprocessor
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dnl AC_MSG_CHECKING(for C preprocessor type)

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