Test `make clean`

diff --git a/.travis.yml b/.travis.yml
index 5e18dd82b785fc02d1e80dd74283dfdec88644af..4e399e5ad2874a5570ad023813ac3eac3ec79fa2 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ script:
     - make prefix=`pwd`/local install
     - make check
     - make data && diff data/utf8proc_data.c.new utf8proc_data.c
+    - make clean && git status --ignored --porcelain && test -z "$(git status --ignored --porcelain)"
     - (mkdir build_static && cd build_static && cmake .. -DCMAKE_VERBOSE_MAKEFILE=ON && make)
     - (mkdir build_shared && cd build_shared && cmake .. -DCMAKE_VERBOSE_MAKEFILE=ON -DBUILD_SHARED_LIBS=ON && make)
 env: