Install latest doxygen

.travis.yml

@@ -11,7 +11,7 @@ env:
 before_install:
   - sudo add-apt-repository -y ppa:codegear/release
   - sudo apt-get update -qq
-  - sudo apt-get install -y premake4 valgrind doxygen
+  - sudo apt-get install -y premake4 valgrind
 
 install: true
 
@@ -29,5 +29,15 @@ script:
 #  - ./perftest_${config_suffix}
 
 after_script:
+  - cd "${TRAVIS_BUILD_DIR}"
+  - git clone https://github.com/doxygen/doxygen.git
+  - cd doxygen
+  - ./configure
+  - make
+  - make distclean
+  - git pull
+  - ./configure
+  - make
+  - make install
   - cd "${TRAVIS_BUILD_DIR}"
   - doxygen build/Doxyfile