Merge branch 'master' into fix_win32_compilation

.travis.yml

@@ -30,9 +30,9 @@ matrix:
         - pip3 install -q --user setuptools nose2
       script:
         - while sleep 2m; do echo "still building..."; done &
-        - make setup > build.log 2>&1
-        - make LibCarla > build.log 2>&1
-        - make PythonAPI > build.log 2>&1
+        - make setup >> build.log 2>&1
+        - make LibCarla >> build.log 2>&1
+        - make PythonAPI >> build.log 2>&1
         - kill %1
         - make check ARGS="--all --gtest_args=--gtest_filter=-*_mt"
       after_failure:

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9.0)
+cmake_minimum_required(VERSION 3.5.1)
 project(CARLA)
 
 include("Build/CMakeLists.txt.in")

Docs/how_to_build_on_linux.md

@@ -12,10 +12,6 @@ sudo apt-get install build-essential clang-5.0 lld-5.0 g++-7 ninja-build python
 pip install --user setuptools nose2
 ```
 
-Note that some dependencies require **CMake 3.9** or later installed in your
-machine, you can retrieve the latest version from the
-[CMake download page][cmakelink].
-
 To avoid compatibility issues between Unreal Engine and the CARLA dependencies,
 the best configuration is to compile everything with the same compiler version
 and C++ runtime library. We use clang 5.0 and LLVM's libc++. We recommend to

LibCarla/cmake/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9.0)
+cmake_minimum_required(VERSION 3.5.1)
 project(libcarla)
 
 message(STATUS "Building ${PROJECT_NAME} version ${CARLA_VERSION}")

LibCarla/cmake/client/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9.0)
+cmake_minimum_required(VERSION 3.5.1)
 project(libcarla-client)
 
 # Install rpclib.

LibCarla/cmake/server/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9.0)
+cmake_minimum_required(VERSION 3.5.1)
 project(libcarla-server)
 
 # Install libc++ shared libraries.

LibCarla/cmake/test/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9.0)
+cmake_minimum_required(VERSION 3.5.1)
 project(libcarla-unit-tests)
 
 file(GLOB_RECURSE libcarla_test_sources

Util/BuildTools/Setup.sh

@@ -149,6 +149,10 @@ else
 
   log "Building rpclib with libc++."
 
+  # rpclib does not use any cmake 3.9 feature. 
+  # As cmake 3.9 is not standard in Ubuntu 16.04, change cmake version to 3.5
+  sed -i s/"3.9.0"/"3.5.0"/g ${RPCLIB_BASENAME}-source/CMakeLists.txt
+
   mkdir -p ${RPCLIB_BASENAME}-libcxx-build
 
   pushd ${RPCLIB_BASENAME}-libcxx-build >/dev/null