updates .gitignore for CLion IDE

.gitignore

@@ -20,4 +20,10 @@ Release/
 *.sdf
 *.opensdf
 
+#################
+# CLion
+#################
+
+.idea/
+cmake-build-*/
 

CMakeLists.txt

@@ -0,0 +1,68 @@
+cmake_minimum_required(VERSION 3.8)
+cmake_policy(VERSION 3.8)
+
+###############################################
+# NOTE FOR THOSE UNFORTUNATES WHO DON'T KNOW OF HUNTER
+#
+# Hunter is a dependency manager for CMake. It automatically downloads, configures and compiles
+# libraries that your program depends on.
+# Hunter is clever enough to understand the toolchain file you have specified on the command line, and
+# build dependencies (including quite demanding ones like boost, openssl etc) with the correct command line arguments.
+# Tt then caches the build by target, toolchain and configuration so that you never have to build that
+# configuration again.
+# see https://github.com/ruslo/hunter
+#
+# If you don't want to use Hunter then simply define the variable HUNTER_ENABLED=OFF or USE_HUNTER_FOR_DEPENDENCIES=OFF
+# on the CMAKE command line
+if (DEFINED HUNTER_ENABLED)
+    option(USE_HUNTER_FOR_DEPENDENCIES "Use the hunter package manager to find boost" ${HUNTER_ENABLED})
+else ()
+    option(USE_HUNTER_FOR_DEPENDENCIES "Use the hunter package manager to find boost" ON)
+endif ()
+
+option(IMPL_PTR_BUILD_TESTS "build the tests" ON)
+
+if (USE_HUNTER_FOR_DEPENDENCIES)
+    include(cmake/HunterGate.cmake)
+    HunterGate(
+            URL "https://github.com/ruslo/hunter/archive/v0.19.96.tar.gz"
+            SHA1 "8316d0491ee03a918d2e0973aaf5878d9bcfe472"
+    )
+endif ()
+#
+# at this point, HUNTER_ENABLED is guaranteed to be set to ON or OFF
+#
+
+project(ImplPtr)
+set(CMAKE_CXX_STANDARD 14)
+
+if (HUNTER_ENABLED)
+    hunter_add_package(Sugar)
+    include(${SUGAR_ROOT}/cmake/Sugar)
+    include(sugar_files)
+    include(sugar_include)
+    hunter_add_package(Boost)
+    find_package(Boost CONFIG REQUIRED)
+else ()
+    find_package(Boost REQUIRED)
+endif ()
+
+
+add_library(impl_ptr INTERFACE)
+target_include_directories(impl_ptr SYSTEM INTERFACE
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
+        $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>)
+target_link_libraries(impl_ptr INTERFACE Boost::boost)
+
+
+if (IMPL_PTR_BUILD_TESTS)
+    if (HUNTER_ENABLED)
+        sugar_include(test)
+    else ()
+        find_package(Boost REQUIRED)
+        add_subdirectory(test)
+    endif ()
+
+    add_executable(impl_ptr_tests ${TEST_SOURCES})
+    target_link_libraries(impl_ptr_tests PRIVATE impl_ptr)
+endif ()