travis: add dependencies

diff --git a/.travis.yml b/.travis.yml
index 23cd081..7c4eafb 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,4 +2,7 @@ language: cpp
 compiler:
   - gcc
   - clang
+before_install:
+  - sudo apt-get update -qq
+  - sudo apt-get install -y libsdl1.2-dev libasound2-dev libpng-dev libz-dev
 script: ./configure && make