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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi all<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m trying to add CMake export facilities to our open source library <a href="http://github.com/UCL/STIR">http://github.com/UCL/STIR</a>. This uses ITK for IO. I succeeded in modifying my CMake files to “export” that when you link to my STIR-library, you also needs to link to the ITK libraries. However, as I have installed ITK in a non-standard location (I build STIR by setting ITK_DIR), so the ITK libraries are not automatically found by the linker. I am now getting linking errors in my final application (that uses STIR, and hence ITK). More detail below. So, what am I missing in my CMake files to “export” the location of the ITK libraries that were used when building STIR? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am using CMake 3.7.0 on CentOS 7 if that matters.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks for your help<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Kris Thielemans<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Detail:<o:p></o:p></p><p class=MsoNormal>Our CMakeLists.txt files contain stuff like<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>find_package(ITK QUIET)<o:p></o:p></p><p class=MsoNormal>add_library(IO some_sources)<o:p></o:p></p><p class=MsoNormal>if (ITK_FOUND) <o:p></o:p></p><p class=MsoNormal> target_link_libraries(IO ${ITK_LIBRARIES})<o:p></o:p></p><p class=MsoNormal>endif()<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This works nicely. Now I’m putting in the necessary stuff for an external project to be able to link to our IO library. I’m following a scheme similar to<o:p></o:p></p><p class=MsoNormal><a href="https://rix0r.nl/blog/2015/08/13/cmake-guide/">https://rix0r.nl/blog/2015/08/13/cmake-guide/</a> (sorry, firefox claims that this web-site uses an invalided certificate at the moment).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So I’ve added for instance<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>install(TARGETS IO EXPORT STIRTargets DESTINATION lib)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Checking the generated STIRTargets-release.cmake I see indeed that it contains<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>set_target_properties(IO PROPERTIES<o:p></o:p></p><p class=MsoNormal> IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "CXX"<o:p></o:p></p><p class=MsoNormal> IMPORTED_LINK_INTERFACE_LIBRARIES_RELEASE "ITKCommon;lots-of-others-itk-libraries”<o:p></o:p></p><p class=MsoNormal>)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So, now in my final STIR application that uses STIR, I have a simple CMakeLists.txt with<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>find_package(STIR 3.0.0 REQUIRED)<o:p></o:p></p><p class=MsoNormal>include_directories(${STIR_INCLUDE_DIRS})<o:p></o:p></p><p class=MsoNormal>add_executable(testfile testfile.cxx )<o:p></o:p></p><p class=MsoNormal>target_link_libraries(testfile ${STIR_LIBRARIES})<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>However, when building this (on Lubuntu with gcc etc) I get lots of messages like this<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>/usr/bin/ld: cannot find -lITKCommon<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Indeed, in the generated link.txt I do not see anything that tells gcc/ld where the ITK libraries would be.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>