Issue #27434: Version of interpreter running a cross-build and source version must be the same.
diff --git a/Misc/NEWS b/Misc/NEWS
index 142848b..263ba1d 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -132,6 +132,9 @@
Build
-----
+- Issue #27434: The interpreter that runs the cross-build, found in PATH, must
+ now be of the same feature version (e.g. 3.6) as the source being built.
+
- Issue #26930: Update Windows builds to use OpenSSL 1.0.2h.
- Issue #23968: Rename the platform directory from plat-$(MACHDEP) to
diff --git a/configure b/configure
index f6a4892..fbde7f6 100755
--- a/configure
+++ b/configure
@@ -3002,7 +3002,7 @@
if test -z "$PYTHON_FOR_BUILD"; then
for interp in python$PACKAGE_VERSION python3 python; do
which $interp >/dev/null 2>&1 || continue
- if $interp -c 'import sys;sys.exit(not sys.version_info[:2] >= (3,3))'; then
+ if $interp -c "import sys;sys.exit(not '.'.join(str(n) for n in sys.version_info[:2]) == '$PACKAGE_VERSION')"; then
break
fi
interp=
diff --git a/configure.ac b/configure.ac
index 60e8089..9b65ec1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -62,7 +62,7 @@
if test -z "$PYTHON_FOR_BUILD"; then
for interp in python$PACKAGE_VERSION python3 python; do
which $interp >/dev/null 2>&1 || continue
- if $interp -c 'import sys;sys.exit(not sys.version_info@<:@:2@:>@ >= (3,3))'; then
+ if $interp -c "import sys;sys.exit(not '.'.join(str(n) for n in sys.version_info@<:@:2@:>@) == '$PACKAGE_VERSION')"; then
break
fi
interp=