[CMake] Test cmake target on travis

.travis.yml

@@ -264,7 +264,10 @@ install:
   - cp -r $TRAVIS_BUILD_DIR/* libs/config
   - ./bootstrap.sh
   - ./b2 headers
- 
+  - cd ..
+  - git clone -b $TRAVIS_BRANCH --depth 1 https://github.com/boostorg/config.git boost-config-standalone
+  - mkdir cmake-build
+
 script:
   - |-
     echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
@@ -272,6 +275,9 @@ script:
   - for CXXLOCAL in $CXXSTD; do  (cd libs/config/test && ../../../b2 config_info_travis_install toolset=$TOOLSET cxxstd=$CXXLOCAL $CXXSTD_DIALECT && echo With Standard Version $CXXLOCAL && ./config_info_travis && rm ./config_info_travis)  done
   - unset IFS
   - ./b2 -j3 libs/config/test toolset=$TOOLSET cxxstd=$CXXSTD $CXXSTD_DIALECT
+  - cd ../cmake-build
+  - cmake ../boost-config-standalone/test/cmake
+  - cmake --build .
 
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test/cmake/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Copyright 2018 Mike Dev
+# Distributed under the Boost Software License, Version 1.0.
+# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
+
+cmake_minimum_required(VERSION 3.5)
+project(BoostFilesystem_test)
+
+add_subdirectory(../.. ${CMAKE_CURRENT_BINARY_DIR}/boost_config)
+
+add_executable(boost_config_cmake_compilation_test main.cpp)
+target_link_libraries(boost_config_cmake_compilation_test Boost::config)
+
+

test/cmake/main.cpp

@@ -0,0 +1,7 @@
+// Copyright 2018 Mike Dev
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at http ://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/config.hpp>
+
+int main() {}