Re: [CMake] race condition with target_objects
Hello Brad, Thanks for finding the issue. I had simply replaced the shared library I was using with the name of the TARGET_OBJECTS generator. The shared objects are great. It helps me bypass Apple security issues when a system interpreter loads a shared library, which loads another shared library. Regards, Juan On 6/26/18 1:34 PM, Brad King wrote: On 06/26/2018 01:32 PM, Juan E. Sanchez wrote: The likely problem is that the symdiff_objects and the symdiff_tcl are in side-by-side directories. They are both added using ADD_SUBDIRECTORY one level up. If I put symdiff_python before symdiff_tcl, then that target will fail. Please fix your Makefile generator. Target dependencies are agnostic to the directories. The ordering at most matters for serial builds of independent targets. While trying to reproduce this in a simple example I found the problem: ``` TARGET_LINK_LIBRARIES (symdiff_tcl $ ${TCL_ARCHIVE}) ``` That is not the way to reference an object library. The documentation: https://cmake.org/cmake/help/v3.12/manual/cmake-buildsystem.7.html#object-libraries shows that `$` belongs in the list of *sources*, not linked libraries. You should be using: ``` add_library(symdiff_tcl SHARED ... $) ``` -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: https://cmake.org/mailman/listinfo/cmake
Re: [CMake] race condition with target_objects
On 06/26/2018 01:32 PM, Juan E. Sanchez wrote: > The likely problem is that the symdiff_objects and the symdiff_tcl are > in side-by-side directories. They are both added using ADD_SUBDIRECTORY > one level up. If I put symdiff_python before symdiff_tcl, then that > target will fail. Please fix your Makefile generator. Target dependencies are agnostic to the directories. The ordering at most matters for serial builds of independent targets. While trying to reproduce this in a simple example I found the problem: ``` TARGET_LINK_LIBRARIES (symdiff_tcl $ ${TCL_ARCHIVE}) ``` That is not the way to reference an object library. The documentation: https://cmake.org/cmake/help/v3.12/manual/cmake-buildsystem.7.html#object-libraries shows that `$` belongs in the list of *sources*, not linked libraries. You should be using: ``` add_library(symdiff_tcl SHARED ... $) ``` -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: https://cmake.org/mailman/listinfo/cmake
Re: [CMake] race condition with target_objects
Hi, The likely problem is that the symdiff_objects and the symdiff_tcl are in side-by-side directories. They are both added using ADD_SUBDIRECTORY one level up. If I put symdiff_python before symdiff_tcl, then that target will fail. Please fix your Makefile generator. Regards, Juan On 6/26/18 10:58 AM, Brad King wrote: On 06/25/2018 03:09 PM, Juan E. Sanchez wrote: ADD_LIBRARY(symdiff_objects OBJECT ${CXX_SRCS} ${MC_SRCS}) set_property(TARGET symdiff_objects PROPERTY POSITION_INDEPENDENT_CODE ON) TARGET_LINK_LIBRARIES (symdiff_tcl $ ${TCL_ARCHIVE}) How do I tell cmake to wait? Strange, our test suite covers that and the dependency appears. The TARGET_OBJECTS generator expression evaluation has special logic to forward the target-level dependency. This is cmake 3.9.0-rc4 Please try a more recent version, perhaps an actual release. -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: https://cmake.org/mailman/listinfo/cmake