Update Travis configuration

Author: micbou

.travis.yml

@@ -24,19 +24,11 @@ addons:
      # The Travis apt source whitelist can be found here:
      #   https://github.com/travis-ci/apt-source-whitelist/blob/master/ubuntu.json
      - ubuntu-toolchain-r-test  # for new libstdc++
-     - deadsnakes  # for various versions of python
-     - kalakris-cmake # for a more recent version of cmake (needed for ninja-build)
+     - george-edison55-precise-backports # for a more recent version of cmake (3.2.3)
     packages:
+     - cmake-data
      - cmake
      - ninja-build
-     # The confusing part is that on Travis Linux with YCMD_PYTHON_VERSION=3.3,
-     # we build the C++ parts against the below system python3.3, but run
-     # against the pyenv python3.3. This is because stupid cmake 2.8.11 has a
-     # bug preventing it from finding the pyenv pythons (ostensibly; I haven't
-     # checked, but online reports say the issue is gone with cmake 3.4).
-     # Everything still works though, it's just weird.
-     - python3.3
-     - python3.3-dev
      # Everything below is a Python build dep (though it depends on Python
      # version). We need them because pyenv builds Python.
      - libssl-dev

ci/appveyor/appveyor_install.bat

@@ -16,13 +16,6 @@ if %arch% == 32 (
 set PATH=%python_path%;%python_path%\Scripts;%PATH%
 python --version
 
-:: When using Python 3 on AppVeyor, CMake will always pick the 64 bit
-:: libraries. We specifically tell CMake the right path to the libraries
-:: according to the architecture.
-if %python% == 35 (
-  set EXTRA_CMAKE_ARGS="-DPYTHON_LIBRARY=%python_path%\libs\python%python%.lib"
-)
-
 appveyor DownloadFile https://bootstrap.pypa.io/get-pip.py
 python get-pip.py
 pip install -r python\test_requirements.txt

ci/travis/travis_install.linux.sh

@@ -1,2 +1,5 @@
-# Linux installation
+# Linux-specific installation
 
+# In order to work with ycmd, python *must* be built as a shared library. This
+# is set via the PYTHON_CONFIGURE_OPTS option.
+export PYTHON_CONFIGURE_OPTS="--enable-shared"