+if test -z "${IS_WINDOWS_TRUE}" && test -z "${IS_WINDOWS_FALSE}"; then
+ { { echo "$as_me:$LINENO: error: conditional \"IS_WINDOWS\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"IS_WINDOWS\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+ { (exit 1); exit 1; }; }
+fi
+if test -z "${CONTEXT_THREADS_TRUE}" && test -z "${CONTEXT_THREADS_FALSE}"; then
+ { { echo "$as_me:$LINENO: error: conditional \"CONTEXT_THREADS\" was never defined.
+Usually this means the macro was only invoked conditionally." >&5
+echo "$as_me: error: conditional \"CONTEXT_THREADS\" was never defined.
+Usually this means the macro was only invoked conditionally." >&2;}
+ { (exit 1); exit 1; }; }
+fi