I figured out what was going on by lots of experimentation. When we link an Ada executable, we link in two other libraries, each of which is based on C/C++ code. It appears that CMake keeps track of this and adds the implicit library dependencies you'll have because of this C and C++ code. That is why these libraries were showing up. I was able to reproduce this with a simple CMakeLists.txt file. I worked around the problem by defining the implicit library variables to be empty (which will not cause us problems as the link driver (g++ for C/C++ execs, gnatmake for Ada execs) adds the right C/C++ run time libraries to the link line.
Tom On Fri, Jan 3, 2014 at 2:48 PM, Alexander Neundorf <a.neundorf-w...@gmx.net>wrote: > On Friday 03 January 2014, Tom Kacvinsky wrote: > > I sent an email yesterday about -lstdc++ showing up on my link line even > > though I did not request it. And I was getting -lc and -lm multiple > times. > > > > After much digging, I tracked it down to > CMAKE_CXX_IMPLICIT_LINK_LIBRARIES > > and CMAKE_C_IMPLICIT_LINK_LIBRARIES being added to the link line, even > > though the language in effect is Ada (as set up by the PLPlot Ada support > > CMake moduels). > > > > My question is why are these added? Is this done by default in cmake, or > > is this a deficiency in the Ada support modules? > > Ada support is not part of cmake, so it's probably an issue with the Ada > files. > > Alex > > -- > > 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://www.cmake.org/mailman/listinfo/cmake >
-- 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://www.cmake.org/mailman/listinfo/cmake