On 12/10/2015 04:03 AM, CHEVRIER, Marc wrote:
> I identify the root of the problem: if I specify version 3.4 in
> cmake_minimum_required, generated link command (stored in file link.txt)
> for an executable does not contains value specified in variable
> CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS. Specifying 3.3 fix the problem.
> So this is a regression introduced in 3.4.It is not technically a backward incompatibility because project code that worked in 3.3 will still work the same way in 3.4. Only after modifying the code to require 3.4 does the behavior change, but the new behavior is a regression. This is policy CMP0065: https://cmake.org/cmake/help/v3.4/policy/CMP0065.html introduced here: CMP0065: Restrict the use of CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=9784af1b The bug is that CMAKE_SHARED_LIBRARY_LINK_<LANG>_FLAGS is intended to be equivalent to "-rdynamic" on Linux, but the AIX platform file is using it for other flags too: > set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS "-Wl,-brtl,-bnoipath,-bexpall") This should be just set(CMAKE_SHARED_LIBRARY_LINK_${lang}_FLAGS "-Wl,-bexpall") and the `-Wl,-brtl,-bnoipath` flags should move elsewhere. One could add them directly to the CMAKE_${lang}_LINK_EXECUTABLE command line, for example. Thanks, -Brad -- 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: http://public.kitware.com/mailman/listinfo/cmake-developers
