Hello, I was reading the CMake documentation regarding generator expressions, and I found the following:
"$<TARGET_NAME:...> Marks ... as being the name of a target. This is required if exporting targets to multiple dependent export sets. The ... must be a literal name of a target- it may not contain generator expressions." From that I understand that if some targets from an export set depend on other targets from other export set, the dependencies should be specified using $<TARGET_NAME:...> instead of the targets' names. I found the thread (this message specifically: https://www.mail-archive.com/cmake-developers@cmake.org/msg05498.html) that is responsible for the introduction of the TARGET_NAME generator expression, however I cannot find an example for its use. I believe it has something to do with adding the correct namespace to the "required library". I tried an example of dependent export sets in which I do not use $<TARGET_NAME:...>, I even use the target's name inside another generator expression, but no error is generated and the output files contain the correct "imported" targets (with the correct namespaces): "project(target_name) add_library(a a.cpp) add_library(b b.cpp) target_link_libraries(b $<$<EQUAL:1,1>:a>) export(TARGETS a NAMESPACE foo_ FILE a_config.cmake ) export(TARGETS b NAMESPACE bar_ FILE b_config.cmake )" When are we required to use the TARGET_NAME generator expression? Thank you, Razvan -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: https://cmake.org/mailman/listinfo/cmake
