add ghostscript to build env

diff --git a/.travis.yml b/.travis.yml
index 14eb1c3b88607a4fd4bd88136fbd6f7477eb99b1..e8facbedd358ca53c96bc4cbc494aef7d658e1e9 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ perl:
 
 install:
   - sudo apt-get update || true
-  - sudo apt-get install autopoint libdbi-dev tcl-dev lua5.1 liblua5.1-0-dev valgrind dc python-pip python-setuptools libpango1.0-dev
+  - sudo apt-get install autopoint libdbi-dev tcl-dev lua5.1 liblua5.1-0-dev valgrind dc python-pip python-setuptools libpango1.0-dev ghostscript
   - sudo pip install cpp-coveralls
 
 before_script: