Merge pull request #95 from Pfeifenjoy/master

CMake: installation if json11 is added as a library works now

Author: artwyman

CMakeLists.txt

@@ -13,7 +13,7 @@ if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
 endif()
 
 add_library(json11 json11.cpp)
-target_include_directories(json11 PUBLIC ${CMAKE_SOURCE_DIR})
+target_include_directories(json11 PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 target_compile_options(json11
  PRIVATE -fPIC -fno-rtti -fno-exceptions -Wall -Wextra -Werror)
 configure_file("json11.pc.in" "json11.pc" @ONLY)
@@ -32,5 +32,5 @@ if (JSON11_BUILD_TESTS)
 endif()
 
 install(TARGETS json11 DESTINATION lib/${CMAKE_LIBRARY_ARCHITECTURE})
-install(FILES "${CMAKE_SOURCE_DIR}/json11.hpp" DESTINATION include/${CMAKE_LIBRARY_ARCHITECTURE})
-install(FILES "${CMAKE_BINARY_DIR}/json11.pc" DESTINATION lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig)
+install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/json11.hpp" DESTINATION include/${CMAKE_LIBRARY_ARCHITECTURE})
+install(FILES "${CMAKE_CURRENT_BINARY_DIR}/json11.pc" DESTINATION lib/${CMAKE_LIBRARY_ARCHITECTURE}/pkgconfig)