Creation of directories is not related to cmake installation.

.travis.yml

@@ -25,7 +25,6 @@ matrix:
 
 install:
   - script/ci_install.sh
-  - export PATH="${DEPENDENCY_DIR}/cmake/bin:${PATH}"
 
 script:
   - script/ci_build.sh

script/ci_install.sh

@@ -2,9 +2,10 @@
 
 BUILD_DIR=${TRAVIS_BUILD_DIR}
 
-## Install CMake
 mkdir -p "${DEPENDENCY_DIR}" && cd "${DEPENDENCY_DIR}"
 
+
+## Install CMake
 if [[ ! -d "$(ls -A ${DEPENDENCY_DIR}/cmake)" ]]; then
     CMAKE_URL="https://cmake.org/files/v3.8/cmake-3.8.2-Linux-x86_64.tar.gz"
     mkdir -p cmake