move whereami into a submodule

[slayoo]

No description provided.

[alaingdl]

seems to have problems here :

CMake Error at src/CMakeLists.txt:200 (add_library):
  Cannot find source file:

    /home/alaingdl/GDL/TestPR1484/gdl/src/whereami/src/whereami.c

  Tried extensions .c .C .c++ .cc .cpp .cxx .cu .m .M .mm .h .hh .h++ .hm
  .hpp .hxx .in .txx


CMake Error at src/CMakeLists.txt:200 (add_library):
  No SOURCES given to target: whereami

[GillesDuvert]

@alaingdl this is looks like an old error during an early phase of the patch. gdl/src/whereami/src does not exist. Perhaps a line inadvertly forgotten in CMakeFiles. I'll check.
@slayoo This is typically what is going to happen if we use submodules.

[GillesDuvert]

Ok, works with last @slayoo change.
So we have now a submodule. Good first example.

[GillesDuvert]

OK!!!

[GillesDuvert]

NOK!!
The whereami @ ba364cdi folder is not propagated to a clone made or managed by NetBeans!!!

[GillesDuvert]

OK, this has to be done manually. By removing the cloned gdl, replacing it with the command
git clone --recursive https://github.com/gnudatalangage/gdl.git
Then more or less have Netbeans refresh its paths and files by resetting the "Source Folder" in the project (sufficed in my case).

[alaingdl]

(this command is not working here, I have to make :
git clone --recursive https://github.com/gnudatalanguage/gdl/ )

OK, now works for me with this --recursive, the previous was NOK (u22.04)
TBC on OSX ASAP.

[slayoo]

@alaingdl @GillesDuvert when a new submodule is added on GitHub and you update your local clone, git does not by default obtain submodule contents - just metadata. Instead of re-cloning with the --recursive option, one can also use git submodule update or do git pull --recurse-submodules as described here (https://git-scm.com/book/en/v2/Git-Tools-Submodules#_pulling_upstream_changes_from_the_project_remote):

[alaingdl]

heeuuu, don't work for me (on Debian 10.13; git version 2.20.1)

[slayoo]

heeuuu, don't work for me (on Debian 10.13; git version 2.20.1)

@alaingdl, please elaborate

[alaingdl]

Sorry. I tried both commands you mentioned (git submodule update or do git pull --recurse-submodules), on a clean git pull version, but when I try to compile, I got the same error message as before (may be I made a mistake)

[slayoo]

@alaingdl, please try git submodule update --init

[alaingdl]

Thanks, yes, git submodule update --init is working. And git clone --recurse-submodules https://github.com/gnudatalanguage/gdl too.

We have to document that somewhere because the basic commands are no more enough to got it