makefile: test in parallel

diff --git a/makefile b/makefile
index 0ec696b9d94c4a31dec6844450ed0cc2c4e357dc..65e3dac726723f4e1486aedc753a6c19c393c887 100644 (file)
--- a/makefile
+++ b/makefile
@@ -1,5 +1,5 @@
 check:
-       python -m sage.doctest --long --exitfirst mjo/
+       python -m sage.doctest --long --nthread $$(nproc) --exitfirst mjo/
 clean:
        find ./ -type f -name '*.pyc' -delete
        find ./ -type d -name '__pycache__' -delete