6c8d8afe34
This new expression allows checking how a policy was set when a target was created. That information is only recorded for a subset of policies, so a whitelist is used.
22 lines
573 B
CMake
22 lines
573 B
CMake
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cmake_minimum_required(VERSION 2.8)
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cmake_policy(SET CMP0004 OLD)
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add_library(foo SHARED empty.cpp)
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add_library(bar SHARED empty.cpp)
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add_library(bing SHARED empty.cpp)
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add_library(bung SHARED empty.cpp)
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cmake_policy(SET CMP0004 NEW)
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add_library(bat SHARED empty.cpp)
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target_link_libraries(foo "$<1: bar >")
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target_link_libraries(bing "$<$<NOT:$<TARGET_POLICY:CMP0004>>: bar >")
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target_link_libraries(bung "$<$<TARGET_POLICY:CMP0004>: bar >")
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# The line below causes the error because the policy is NEW when bat
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# is created.
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target_link_libraries(bat "$<1: bar >")
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