Issue #8211: Save/restore CFLAGS around AC_PROG_CC in configure.in, compiler
optimizations are disabled when --with-pydebug is used.
diff --git a/Misc/NEWS b/Misc/NEWS
index 7987d8c..bebf2b7 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
Core and Builtins
-----------------
+- Issue #8211: Save/restore CFLAGS around AC_PROG_CC in configure.in, compiler
+ optimizations are disabled when --with-pydebug is used.
+
- Issue #1583863: An unicode subclass can now override the __unicode__ method
- Issue #6474: Make error message from passing an inadequate number of keyword
diff --git a/configure b/configure
index e6fc4d6..13e3d48 100755
--- a/configure
+++ b/configure
@@ -2367,6 +2367,7 @@
{ (exit 1); exit 1; }; }
fi
+save_CFLAGS=$CFLAGS
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -3286,6 +3287,7 @@
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
+CFLAGS=$save_CFLAGS
diff --git a/configure.in b/configure.in
index 9773e8c..e9bd94b 100644
--- a/configure.in
+++ b/configure.in
@@ -493,7 +493,9 @@
(it is also a good idea to do 'make clean' before compiling)])
fi
+save_CFLAGS=$CFLAGS
AC_PROG_CC
+CFLAGS=$save_CFLAGS
AC_SUBST(CXX)
AC_SUBST(MAINCC)