gh-91731: Build Python with -std=c11 (#91733)

Python is now built with "-std=c11" compiler option, rather than "-std=c99".
python · Apr 20, 2022 · aaeea78 · aaeea78
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commit aaeea78
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diff --git a/Misc/NEWS.d/next/Build/2022-04-20-11-14-51.gh-issue-91731.zRoPcJ.rst b/Misc/NEWS.d/next/Build/2022-04-20-11-14-51.gh-issue-91731.zRoPcJ.rst
@@ -0,0 +1,2 @@
+Python is now built with ``-std=c11`` compiler option, rather than
+``-std=c99``. Patch by Victor Stinner.
diff --git a/configure b/configure
diff --git a/configure.ac b/configure.ac
@@ -1983,7 +1983,7 @@ AC_DEFUN([PY_CHECK_CC_WARNING], [
 # tweak BASECFLAGS based on compiler and platform
 case $GCC in
 yes)
-    CFLAGS_NODIST="$CFLAGS_NODIST -std=c99"
+    CFLAGS_NODIST="$CFLAGS_NODIST -std=c11"
 
     PY_CHECK_CC_WARNING([enable], [extra], [if we can add -Wextra])
     AS_VAR_IF([ac_cv_enable_extra_warning], [yes],