So, I just checked the changes ... and the build does not work correctly. But I left the compilation enabled and we will have breaking builds until this is fixed.
The error message is: [INFO] --- cmake-maven-plugin:3.7.2-b1:compile (cmake-compile) @ plc4cpp-utils-logger --- Scanning dependencies of target plc4cpp-utils-logger [ 14%] Building CXX object CMakeFiles/plc4cpp-utils-logger.dir/src/main/cpp/org/apache/plc4x/cpp/utils/logger/BLogger.cpp.o In file included from /Users/christofer.dutz/Projects/Apache/PLC4X/plc4cpp/utils/logger/src/main/cpp/org/apache/plc4x/cpp/utils/logger/BLogger.cpp:20: /Users/christofer.dutz/Projects/Apache/PLC4X/plc4cpp/utils/logger/src/main/cpp/org/apache/plc4x/cpp/utils/logger/BLogger.h:118:43: warning: control reaches end of non-void function [-Wreturn-type] BLogger& operator=(BLogger const&){ }; // assignment operator is private ^ 1 warning generated. [ 28%] Building CXX object CMakeFiles/plc4cpp-utils-logger.dir/src/main/cpp/org/apache/plc4x/cpp/utils/logger/DatDmp.cpp.o [ 42%] Building CXX object CMakeFiles/plc4cpp-utils-logger.dir/src/main/cpp/org/apache/plc4x/cpp/utils/logger/DbgTrace.cpp.o [ 57%] Building CXX object CMakeFiles/plc4cpp-utils-logger.dir/src/main/cpp/org/apache/plc4x/cpp/utils/logger/ErrorCategory.cpp.o In file included from /Users/christofer.dutz/Projects/Apache/PLC4X/plc4cpp/utils/logger/src/main/cpp/org/apache/plc4x/cpp/utils/logger/ErrorCategory.cpp:20: /Users/christofer.dutz/Projects/Apache/PLC4X/plc4cpp/utils/logger/src/main/cpp/org/apache/plc4x/cpp/utils/logger/ErrorCategory.h:23:10: fatal error: 'boost\system\error_code.hpp' file not found #include <boost\system\error_code.hpp> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. make[2]: *** [CMakeFiles/plc4cpp-utils-logger.dir/src/main/cpp/org/apache/plc4x/cpp/utils/logger/ErrorCategory.cpp.o] Error 1 make[1]: *** [CMakeFiles/plc4cpp-utils-logger.dir/all] Error 2 make: *** [all] Error 2 The strange thing is that I triple- and quadruple-checked that the file (boost\system\error_code.hpp) is there and the directory is correctly referenced in the CMakeFile.txt: target_include_directories (plc4cpp-utils-logger PUBLIC target/dependencies/include) So something strange must be going on in there ... unfortunately I stopped C and C++ development in the early 2000s so I'm not 100% sure where to look. Chris Am 27.05.19, 10:17 schrieb "Christofer Dutz" <christofer.d...@c-ware.de>: Hi Markus, I did talk to you about this in our last session. And it once worked while we did it in Stuttgart. You introduced the problems by dropping code you didn't test with our primary build system, which is Maven. And it's not really a fun trip for me to travel to Stuttgart cause it takes me about 6 hours of travelling, so I would rather not do this over and over again. And it's not quite the Apache way to do these private one-to-one meetups. I would be happy if we stared discussing C++ related things on this mailing-list, as we are discussing all the other ones. Feel free to sign-up to our plc4x slack channel if you prefer that, but we should only use this for chats, fun and informal discussions. The deeper discussions should happen here. Right now the primary build system is Maven and the aggregational CMake files were a convenience to help use other IDEs (VisualStudio, CLion, ...). The problem is, that if we don't do this, we will be having big problems when starting to generate drivers. I would not really like to develop a plugin for each build system. In maven it's considered absolute bad practice to reference resources outside the maven module ... so the referencing stuff "../../../src/main/cpp" is not a good thing. That's why I introduced the packaging and the unpacking in the build as this allows to add a maven dependency to the pom and the managing of the links to dependencies is handles as all dependencies are located in the same directory. So this simplifies the management of the CMakeFile.txt as you only need one entry for all dependencies: target/dependencies/include So if you have a better suggestion how to manage the dependencies and the driver generation in the future, I'm open for this. Otherwise I would like to keep things the way I set them up. I know that with C# and Python we will be having exactly the same problems ... but at least for C++ I had thought I had solved them. Chris Am 27.05.19, 09:54 schrieb "Markus Sommer" <som...@isb-fn.de>: Hello, Chris, I looked at the pom.xml on the weekend. To resolve the dependencies towards Boost, a local duplicate is created in the Dependencies folder. The duplicate is then created for each module. To include Boost in CMake you can use the following in the top level: set(BOOST_ROOT "./libs/boost/target/boost_1_70_0/") set(Boost_USE_STATIC_LIBS ON) set(Boost_USE_MULTITHREADED ON) find_package(Boost COMPONENTS filesystem log REQUIRED) In the sub CMakes Boost can then be used as follows: TARGET_LINK_LIBRARIES (plc4cpp-utils-logger ${Boost_LIBRARIES}) target_include_directories (plc4cpp-utils-logger PUBLIC ${Boost_INCLUDE_DIRS}) Duplication of the code is then no longer necessary. @Chris: I think we should solve the topic pom.xml together in one appointment (Stuttgart?). The errors in the cpp files I have just made a commit to the branch "develop". Best regards Markus Translated with www.DeepL.com/Translator Freundliche Grüße Markus Sommer Geschäftsführer isb innovative software businesses GmbH Otto-Lilienthal-Strasse 2 D - 88046 Friedrichshafen Tel.: +49 (0) 7541 3834-14 Mob: +49 (0) 171 537 8437 Fax: +49 (0) 7541 3834-20 E-Mail: som...@isb-fn.de Web: www.isb-fn.de Geschäftsführer: Markus Sommer, Thomas Zeler Sitz: Friedrichshafen Registergericht: Amtsgericht Ulm HRB-Nr. 631624 Important Note: This e-mail and any attachments are confidential, may contain trade secrets and may well also be legally privileged or otherwise protected from disclosure. If you have received it in error, you are on notice of its status. Please notify us immediately by reply e-mail and then delete his e-mail and any attachment from your system. If you are not the intended recipient please understand that you must not copy this e-mail or any attachments or disclose the contents to any other person. Thank you. -----Ursprüngliche Nachricht----- Von: Christofer Dutz <christofer.d...@c-ware.de> Gesendet: Donnerstag, 23. Mai 2019 13:43 An: dev@plc4x.apache.org Betreff: [C++] Getting the logger module working? Hi all (especially Markus), I noticed that I had to disable the compilation of the logger module in the plc4cpp as I am getting errors. Would be great if you could look into them. In order to do this, you need to comment in the cmake-compile execution in: plc4cpp/utils/logger/pom.xml I tried finding out what’s wrong, but gave up in the end. Chris