THRIFT-4301: fix inability to disable py3 with autoconf build
diff --git a/configure.ac b/configure.ac
index 4a5fb39..fa50756 100755
--- a/configure.ac
+++ b/configure.ac
@@ -325,10 +325,13 @@
# It's distro specific and far from ideal but needed to cross test py2-3 at once.
# TODO: find "python2" if it's 3.x
have_py3="no"
-if python --version 2>&1 | grep -q "Python 2"; then
- AC_PATH_PROGS([PYTHON3], [python3 python3.5 python35 python3.4 python34])
- if test -n "$PYTHON3"; then
- have_py3="yes"
+AX_THRIFT_LIB(py3, [Py3], yes)
+if test "$with_py3" = "yes"; then
+ if $PYTHON --version 2>&1 | grep -q "Python 2"; then
+ AC_PATH_PROGS([PYTHON3], [python3 python3.7 python37 python3.6 python36 python3.5 python35 python3.4 python34])
+ if test -n "$PYTHON3"; then
+ have_py3="yes"
+ fi
fi
fi
AM_CONDITIONAL(WITH_PY3, [test "$have_py3" = "yes"])