[ci] install make on windows

diff --git a/.travis.yml b/.travis.yml
index 4de5719..39c4ea3 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -49,6 +49,7 @@ matrix:
       os: windows
       before_install:
         - choco install python --version 3.8.0
+        - choco install make
         - python -m pip install --upgrade pip
       env: PATH=/c/Python38:/c/Python38/Scripts:$PATH