Add a test for SYSTEM headers in INTERFACE libraries.
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@ -17,3 +17,31 @@ target_include_directories(upstream SYSTEM PUBLIC
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add_library(consumer consumer.cpp)
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add_library(consumer consumer.cpp)
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target_link_libraries(consumer upstream)
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target_link_libraries(consumer upstream)
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target_compile_options(consumer PRIVATE -Werror=unused-variable)
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target_compile_options(consumer PRIVATE -Werror=unused-variable)
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add_library(iface IMPORTED INTERFACE)
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set_property(TARGET iface PROPERTY INTERFACE_INCLUDE_DIRECTORIES "${CMAKE_CURRENT_SOURCE_DIR}/systemlib_header_only")
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add_library(imported_consumer imported_consumer.cpp)
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target_link_libraries(imported_consumer iface)
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target_compile_options(imported_consumer PRIVATE -Werror=unused-variable)
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macro(do_try_compile error_option)
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set(TC_ARGS
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IFACE_TRY_COMPILE_${error_option}
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"${CMAKE_CURRENT_BINARY_DIR}/try_compile_iface" "${CMAKE_CURRENT_SOURCE_DIR}/imported_consumer.cpp"
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LINK_LIBRARIES iface
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)
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if (${error_option} STREQUAL WITH_ERROR)
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list(APPEND TC_ARGS COMPILE_DEFINITIONS -Werror=unused-variable)
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endif()
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try_compile(${TC_ARGS})
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endmacro()
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do_try_compile(NO_ERROR)
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if (NOT IFACE_TRY_COMPILE_NO_ERROR)
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message(SEND_ERROR "try_compile failed with imported target.")
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endif()
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do_try_compile(WITH_ERROR)
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if (NOT IFACE_TRY_COMPILE_WITH_ERROR)
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message(SEND_ERROR "try_compile failed with imported target with error option.")
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endif()
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@ -0,0 +1,7 @@
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#include "systemlib.h"
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int main()
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{
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return systemlib();
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}
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@ -0,0 +1,16 @@
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#ifndef SYSTEMLIB_H
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#define SYSTEMLIB_H
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int systemlib()
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{
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return 0;
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}
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int unusedFunc()
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{
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int unused;
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return systemlib();
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}
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#endif
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