CMake/Tests/RunCMake/TargetPropertyGeneratorExpressions/LinkImplementationCycle4.cmake
Stephen Kelly 61ce654742 Genex: Fix stack overflow in transitive property evaluation.
Commit v2.8.11~156^2~2 (Expand includes and defines transitively
in 'external' genexes., 2013-02-13) introduced a recursive loop
and a stack overflow during evaluation of a link implementation
which depends on a transitive property, such as

 add_library(empty1 ...)
 add_library(empty2 ...)
 target_link_libraries(empty1
   PRIVATE
     $<$<STREQUAL:$<TARGET_PROPERTY:INCLUDE_DIRECTORIES>,/foo/bar>:empty2>
 )

There is no use-case for code like that currently, but it should not
cause a stack overflow.

Avoid the recursion by reporting an error early if a case like this
is found.
2014-07-02 00:09:38 +02:00

15 lines
430 B
CMake

add_library(empty1 empty.cpp)
add_library(empty2 empty.cpp)
# The INTERFACE_INCLUDE_DIRECTORIES do not depend on the link interface.
# On its own, this is fine. It is only when used by empty3 that an error
# is appropriately issued.
target_link_libraries(empty1
INTERFACE
$<$<STREQUAL:$<TARGET_PROPERTY:INTERFACE_INCLUDE_DIRECTORIES>,/foo/bar>:empty2>
)
add_library(empty3 empty.cpp)
target_link_libraries(empty3 empty1)