dev-cpp/cpp-hocon: [QA] Fix ebuild

* EAPI 7
* Use GNUInstallDirs
* Remove dead variables

Package-Manager: Portage-2.3.81, Repoman-2.3.20
Signed-off-by: David Seifert <soap@gentoo.org>

dev-cpp/cpp-hocon/files/cpp-hocon-0.2.1-cmake.patch

@@ -0,0 +1,48 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -10,6 +10,8 @@
+ string(TOUPPER ${PROJECT_C_NAME} PROJECT_NAME_UPPER)
+ string(TOLOWER ${PROJECT_C_NAME} PROJECT_NAME_LOWER)
+ 
++include(GNUInstallDirs)
++
+ # Common cmake setup
+ if (NOT CMAKE_BUILD_TYPE)
+     message(STATUS "Defaulting to a release build.")
+@@ -42,7 +44,7 @@
+     set(BOOST_COMPONENTS regex)
+ endif()
+ 
+-list(APPEND BOOST_COMPONENTS thread date_time chrono system program_options)
++list(APPEND BOOST_COMPONENTS thread date_time chrono filesystem system program_options)
+ 
+ # Add other dependencies
+ find_package(Boost 1.54 REQUIRED COMPONENTS ${BOOST_COMPONENTS})
+--- a/lib/CMakeLists.txt
++++ b/lib/CMakeLists.txt
+@@ -77,7 +77,10 @@
+ set_target_properties(libprojectsrc PROPERTIES POSITION_INDEPENDENT_CODE true)
+ 
+ add_library(lib${PROJECT_NAME} $<TARGET_OBJECTS:libprojectsrc>)
+-set_target_properties(lib${PROJECT_NAME} PROPERTIES VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
++set_target_properties(
++    lib${PROJECT_NAME}
++    PROPERTIES VERSION "${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}"
++    OUTPUT_NAME ${PROJECT_NAME})
+ target_link_libraries(lib${PROJECT_NAME}
+     ${LEATHERMAN_LIBRARIES}
+     ${Boost_LIBRARIES}
+@@ -88,7 +91,11 @@
+ symbol_exports(lib${PROJECT_NAME} "${CMAKE_CURRENT_LIST_DIR}/inc/hocon/export.h")
+ 
+ # This correctly handles DLL installation on Windows.
+-leatherman_install(lib${PROJECT_NAME})
+-install(DIRECTORY inc/hocon DESTINATION include)
++install(
++    TARGETS lib${PROJECT_NAME}
++    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
++    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
++    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
++install(DIRECTORY inc/hocon DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+ 
+ add_subdirectory(tests)