| |
| cmake_minimum_required(VERSION 2.8) |
| |
| project(SystemIncludeDirectories) |
| |
| add_library(systemlib systemlib.cpp) |
| target_include_directories(systemlib PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/systemlib") |
| |
| add_library(upstream upstream.cpp) |
| target_link_libraries(upstream LINK_PUBLIC systemlib) |
| target_compile_options(upstream PRIVATE -Werror=unused-variable) |
| |
| target_include_directories(upstream SYSTEM PUBLIC |
| $<TARGET_PROPERTY:systemlib,INTERFACE_INCLUDE_DIRECTORIES> |
| ) |
| |
| add_library(config_specific INTERFACE) |
| if(CMAKE_GENERATOR STREQUAL "Xcode") |
| # CMAKE_BUILD_TYPE does not work here for multi-config generators |
| target_include_directories(config_specific SYSTEM INTERFACE |
| "${CMAKE_CURRENT_SOURCE_DIR}/config_specific" |
| ) |
| else() |
| set(testConfig ${CMAKE_BUILD_TYPE}) |
| target_include_directories(config_specific SYSTEM INTERFACE |
| "$<$<CONFIG:${testConfig}>:${CMAKE_CURRENT_SOURCE_DIR}/config_specific>" |
| ) |
| endif() |
| |
| add_library(consumer consumer.cpp) |
| target_link_libraries(consumer upstream config_specific) |
| target_compile_options(consumer PRIVATE -Werror=unused-variable) |
| |
| add_library(iface IMPORTED INTERFACE) |
| set_property(TARGET iface PROPERTY INTERFACE_INCLUDE_DIRECTORIES |
| "$<$<COMPILE_LANGUAGE:CXX>:${CMAKE_CURRENT_SOURCE_DIR}/systemlib_header_only>" |
| ) |
| |
| add_library(imported_consumer imported_consumer.cpp) |
| target_link_libraries(imported_consumer iface) |
| target_compile_options(imported_consumer PRIVATE -Werror=unused-variable) |
| |
| add_library(imported_consumer2 imported_consumer.cpp) |
| target_link_libraries(imported_consumer2 imported_consumer) |
| target_compile_options(imported_consumer2 PRIVATE -Werror=unused-variable) |
| |
| # add a target which has a relative system include |
| add_library(somelib imported_consumer.cpp) |
| target_include_directories(somelib SYSTEM PUBLIC "systemlib_header_only") |
| target_compile_options(somelib PRIVATE -Werror=unused-variable) |
| |
| # add a target which consumes a relative system include |
| add_library(otherlib upstream.cpp) |
| target_link_libraries(otherlib PUBLIC somelib) |
| target_compile_options(somelib PRIVATE -Werror=unused-variable) |
| |
| macro(do_try_compile error_option) |
| set(TC_ARGS |
| IFACE_TRY_COMPILE_${error_option} |
| "${CMAKE_CURRENT_BINARY_DIR}/try_compile_iface" "${CMAKE_CURRENT_SOURCE_DIR}/imported_consumer.cpp" |
| LINK_LIBRARIES iface |
| ) |
| if (${error_option} STREQUAL WITH_ERROR) |
| list(APPEND TC_ARGS COMPILE_DEFINITIONS -Werror=unused-variable) |
| endif() |
| try_compile(${TC_ARGS}) |
| endmacro() |
| |
| do_try_compile(NO_ERROR) |
| if (NOT IFACE_TRY_COMPILE_NO_ERROR) |
| message(SEND_ERROR "try_compile failed with imported target.") |
| endif() |
| do_try_compile(WITH_ERROR) |
| if (NOT IFACE_TRY_COMPILE_WITH_ERROR) |
| message(SEND_ERROR "try_compile failed with imported target with error option.") |
| endif() |