Installation of CMake on Travis moved to script.

.travis.yml

 
 
 install:
-  - mkdir -p "${DEPENDENCY_DIR}" && cd "${DEPENDENCY_DIR}"
-  - |
-      if [[ ! -d "$(ls -A ${DEPENDENCY_DIR}/cmake)" ]]; then
-        CMAKE_URL="https://cmake.org/files/v3.8/cmake-3.8.2-Linux-x86_64.tar.gz"
-        mkdir -p cmake && travis_retry wget --no-check-certificate --quiet -O - "${CMAKE_URL}" | tar --strip-components=1 -xz -C cmake
-      fi
-      export PATH="${DEPENDENCY_DIR}/cmake/bin:${PATH}"
-  - cd ${TRAVIS_BUILD_DIR}
-
+  - script/ci_install.sh
 
 script:
   - script/ci_build.sh

script/ci_install.sh

+#!/bin/bash
+
+BUILD_DIR=${TRAVIS_BUILD_DIR}
+
+## Install CMake
+mkdir -p "${DEPENDENCY_DIR}" && cd "${DEPENDENCY_DIR}"
+
+if [[ ! -d "$(ls -A ${DEPENDENCY_DIR}/cmake)" ]]; then
+    CMAKE_URL="https://cmake.org/files/v3.8/cmake-3.8.2-Linux-x86_64.tar.gz"
+    mkdir -p cmake
+    wget --no-check-certificate --quiet -O - "${CMAKE_URL}" | tar --strip-components=1 -xz -C cmake
+fi
+
+export PATH="${DEPENDENCY_DIR}/cmake/bin:${PATH}"
+cmake --version
+
+cd ${BUILD_DIR}
+