Add CMake test project

.travis.yml

@@ -251,6 +251,14 @@ matrix:
       env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
       osx_image: xcode6.4
 
+    - os: linux
+      env: CMAKE_TEST_PROJECT=1
+      install: true
+      script:
+        - mkdir __build__ && cd __build__
+        - cmake ../test/cmake_test_project
+        - cmake --build .
+
 install:
   - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
   - cd ..

test/cmake_test_project/CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.5)
+  
+add_subdirectory(../.. ${CMAKE_CURRENT_BINARY_DIR}/boost_config)
+  
+add_executable(boost_config_cmake_test main.cpp)  
+target_link_libraries(boost_config_cmake_test Boost::config)  

test/cmake_test_project/main.cpp

@@ -0,0 +1,5 @@
+#include <boost/config.hpp>
+
+int main()
+{
+}