Travis: check if we are on Travis when install dependencies

Clement Champetier · Clement Champetier · commit b80244c7e022 · 2016-02-12T11:18:22.000+01:00
Useful to use the script outside of Travis (Docker...).
diff --git a/tools/travis/linux.install.deps.sh b/tools/travis/linux.install.deps.sh
@@ -3,7 +3,9 @@
 # Print commands and their arguments as they are executed.
 set -x
 
-if [ ! -d "${DEPENDENCY_INSTALL_PATH}/lib/" ]; then
+# Use TRAVIS_JOB_ID to detect that we are in travis.
+# In that case, use a simple check to detect if the cache is already there.
+if  [ -z ${TRAVIS_JOB_ID} ] || [ ! -d "${DEPENDENCY_INSTALL_PATH}/lib/" ]; then
 
     if [[ ${DEPENDENCY_NAME} == "ffmpeg" ]]; then
 
