bpo-29643: Fix check for --enable-optimizations (GH-869)
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.
(cherry picked from commit 8cea5929f52801b0ce5928b46ef836e99a24321a)
diff --git a/configure.ac b/configure.ac
index 9eacf52..6b331d5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1274,7 +1274,7 @@
AC_MSG_CHECKING(for --enable-optimizations)
AC_ARG_ENABLE(optimizations, AS_HELP_STRING([--enable-optimizations], [Enable expensive optimizations (PGO, etc). Disabled by default.]),
[
-if test "$withval" != no
+if test "$enableval" != no
then
Py_OPT='true'
AC_MSG_RESULT(yes);