bpo-29643: Fix check for --enable-optimizations (GH-129)
The presence of the ``--enable-optimizations`` flag is indicated by the
value of ``$enableval``, but the configure script was checking ``$withval``,
resulting in the ``--enable-optimizations`` flag being effectively ignored.
diff --git a/configure b/configure
index 26b4a05..87504d2 100755
--- a/configure
+++ b/configure
@@ -6521,7 +6521,7 @@
# Check whether --enable-optimizations was given.
if test "${enable_optimizations+set}" = set; then :
enableval=$enable_optimizations;
-if test "$withval" != no
+if test "$enableval" != no
then
Py_OPT='true'
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5