Build fails in VTK : many undefined references

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Well these are observational findings, perhaps related to Arch’s specifics, being so called ‘bleeding edge’ by nature.

I report these findings in case it’s known to you and a fix can be pointed to, or in case these findings might be useful in the future. I am well aware your build infrastructure is quite different and well described in your factory pages. I am not an IT pro, and won’t ever have such knowledge to venture in advanced tasks like a new pull request.

So in all, I’ll maintain locally a few tweaks that allow me to build Slicer.

As for the ssh2 issue, the new curl pulled in has much to do with ssh2 :

LANG=C LC_ALL=C readelf -hs src/Slicer-SuperBuild/curl-build/lib/libcurl.a |grep ssh 
    30: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT  UND Curl_ssh_init
    35: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT  UND Curl_ssh_cleanup
     9: 0000000000000000    80 OBJECT  LOCAL  DEFAULT    4 ssh_buffer.0
    24: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT  UND Curl_ssh_version
File: src/Slicer-SuperBuild/curl-build/lib/libcurl.a(libssh.c.o)
     1: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS libssh.c
File: src/Slicer-SuperBuild/curl-build/lib/libcurl.a(libssh2.c.o)
     1: 0000000000000000     0 FILE    LOCAL  DEFAULT  ABS libssh2.c
     5: 0000000000000000     9 FUNC    LOCAL  DEFAULT    1 my_libssh2_malloc
     6: 0000000000000010     9 FUNC    LOCAL  DEFAULT    1 my_libssh2_realloc
     7: 0000000000000020    17 FUNC    LOCAL  DEFAULT    1 my_libssh2_free

… …

May be I don’t interpret it rightly. I may of course give you more information you may need.