multiple instances of rdm server for multiple projects

[yavitzour]

Hi,

Inside rtags.el (starting at line 259) there is a suggestion to start multiple instances of rdm to handle multiple projects (the exact mechanism is explained there). Since cmake-ide already starts an rdm instance if one isn't running, can it start a new one for each project (especially useful in conjunction with the persistant-naming option)?

[atilaneves]

It could start an instance per project but that'd be tricky to implement and not something I'm terribly interested in. PRs welcome though.

[dlyr]

Hi there, I rediscover emacs as an ide, and give a try to cmake-ide. Is this issue related to the fact I can't open two CMakeLists.txt and compile them with the same running emacs ? or in fact it is possible but I'm wrong ... I'm not familiar with rtags and rdm, so I'm not sure I can try to find a patch but can investigate.
++ d

[atilaneves]

Two CMakeLists.txt in the same project or different projects?

[dlyr]

Two CMakeLitsts.txt for two diffrents projects,
something like
/project1/CMakeLists.txt < the one I want to run cmake on
/project1/many_sub_dirs_with_included/CMakeLists.txt
/project2/CMakeLists.txt < the second I want to run cmake on
/project2/many_sub_dirs_with_included/CMakeLists.txt

By the way, something I do wrong was to call cmake-ide-run-cmake from CMakeLists.txt (then rdm failed to lauch ...) If I call cmake-ide-run-cmake from a subsequent source file, rdm start fines from emacs.

It may be another issue in fact
I use (setq cmake-ide-build-pool-use-persistent-naming t), but the pb is still present without this options

[atilaneves]

Two projects should work fine. I don't remember ever seeing an issue.

[dlyr]

Ok, I will check further (no time right now, two instance of emacs are fine)

[dlyr]

Hi, maybe I should open another issue, but to answer my question, it seems that there is only one value for cmake-ide-build-dir, and once set, it is used for all the opened file.

(defun cmake-ide--get-build-dir ()
  "Return the directory name to run CMake in."
  (if (not (cmake-ide--build-dir-var))

I also try to have cmake-ide--get-build-dir dependent on cmake options (to have one build dir for debug, another one for release) by adding a cmake-opt custom variable, but I'm not sure I get the "idb" thing.
++ d

[atilaneves]

The way to do use cmake-ide-build-dir "properly" is to use directory local variables.

[dlyr]

I'm still testing, but I will propose a pull request adding an hashtable of build-dir and cmake-ide-cmake-opts that allows to change opts during emacs session and keep build directories (to save compil time if I set back cmake opt to a previous value). I have only tested with persistent build directory yet (and a friend suggest to also make compiler dependent dir, if you want to switch back and forth between compilers). see https://github.com/dlyr/cmake-ide/tree/debug_release