I'm Cc'ing the trace users and devel mailing list just to keep this archived. On Fri, 28 Jul 2023 11:29:26 +0800 Sang QianLong <hacksonsang@xxxxxxxxx> wrote: > Dear rostedt, > > I hope this email finds you well. My name is Hacksonsang, and I am reaching > out for your assistance regarding a persistent issue I am facing while > working with "ctracecmd.so" in Python. > I have to admit that I personally do not use python, and this code was added by others. Note, there's patches to fix the python code, but as I'm not a python expert, I'm still holding off to applying them. Not sure if this helps you, but you may want to look at this: https://patchwork.kernel.org/project/linux-trace-devel/patch/Y+w51nOhNd+PGo/k@xxxxxxxxxxxxxxx/ Does the above help you? -- Steve > I am currently using Ubuntu 20.04 with GCC 9.4.0 and Python 3.8.8. The > problem arises when I try to import "ctracecmd.so" into my Python script. I > consistently encounter the error message: "Undefined symbol: uncompress." > > To address this, I initially attempted to include the "-lz" flag in > LD_FLAGS, hoping to resolve the "uncompress" issue. However, this action > resulted in encountering more "undefined symbol" errors, such as > "tep_plugin_kvm_get_func." > Upon investigating further, I found that these symbols are defined in the > "trace-xxx.c" files within the "tracecmd" directory. Unfortunately, it > appears that the Python/Makefile only utilizes the ".c" files from the > "lib/trace-cmd" directory during the compilation of "ctracecmd.so." To > address this limitation, I tried compiling "ctracecmd.so" by including the > ".c" files from the "tracecmd" directory using "-fpic" compilation. > Despite these efforts, I am still facing the same issue, and the "undefined > symbol" errors persist. > > Given the situation's complexity, I am seeking your expertise and guidance > in resolving this matter. I believe that resolving this problem is crucial > as the functionalities offered by trace-cmd are vital for the successful > execution of my project. > > If there are any specific steps or configurations that I missed or any > other troubleshooting suggestions you could provide, I would greatly > appreciate it. Please let me know if you require any additional > information, logs, or code snippets to understand the issue better. I am > willing to provide whatever is necessary for a comprehensive analysis. > > Thank you so much for your time and consideration. I am eagerly looking > forward to your valuable insights and assistance. > > Best regards
|