message: travis: add libtinyxml2-dev as apt dependency
diff: @@ -13,6 +13,7 @@ matrix:
  apt:
  packages:
  - doxygen
  + - libtinyxml2-dev
  - os: linux
  dist: trusty
  sudo: false
  @@ -29,6 +30,7 @@ matrix:
  - gcc-5
  - g++-5
  - doxygen
  + - libtinyxml2-dev
  - os: linux
  dist: trusty
  sudo: false
  @@ -45,6 +47,7 @@ matrix:
  - gcc-6
  - g++-6
  - doxygen
  + - libtinyxml2-dev
  - os: linux
  sudo: required
  services:
  