[O] [BUG]C source block evaluation fails over pscp
I am working on Windows machine with org file with C source block. I want
to evaluate code block on remote machine accessible to me with PuTTY. Here
is relevant part of the org file:
#+PROPERTY: header-args :noweb yes :results verbatim :dir /pscp:tcl:/home/tc
Now, let us move to the green fields of user input.
#+NAME: echo_arguments
#+BEGIN_SRC C :main no
#include
int main(int argc, const char* argv[])
{
printf("Has %d arguments\n", argc);
for(int i = 0; i < argc; ++i)
printf("Argument %d:\n%s\n", i, argv[i]);
return 0;
}
#+END_SRC
Evaluation of source block results in error with the following message:
Spawning child process: invalid argument
Full messages output is
executing C code block (echo_arguments)...
Continue...
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760k9p.c to
/pscp:tcl:/tmp/C-src-5760Xzj.c...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760k9p.c to
/pscp:tcl:/tmp/C-src-5760Xzj.c...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760-R2.exe to
/pscp:tcl:/tmp/C-bin-5760xHw.exe...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760-R2.exe to
/pscp:tcl:/tmp/C-bin-5760xHw.exe...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760wbF.c to
/pscp:tcl:/tmp/C-src-5760Xzj.c...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760wbF.c to
/pscp:tcl:/tmp/C-src-5760Xzj.c...done
Break
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760KwR to
/pscp:tcl:/tmp/ob-input-57609lL...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760KwR to
/pscp:tcl:/tmp/ob-input-57609lL...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760kEe to
/pscp:tcl:/tmp/ob-error-5760X6X...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760kEe to
/pscp:tcl:/tmp/ob-error-5760X6X...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.5760xOk to
/pscp:tcl:/tmp/ob-input-57609lL...failed
edebug-signal: Spawning child process: invalid argument
Debugging shows that error occurs inside function org-babel-eval when call
to
org-babel--shell-command-on-region is made at the line 105 of org-eval.el.
The line is:
(write-region start end input-file)
There are two things that seem strange:
1. Region is actually empty - input region for C file compilation is empty.
2. There is no problem in writing to remote machine. C source file is
written to location needed.
3. Command line is
"gcc -o \"/tmp/C-bin-5760L4M.exe\" \"/tmp/C-src-5760xjA.c\" "
If that command line is executed on remote machine, compilation succeeds
Was that error introduced in some recen org version?
[O] [PATCH] ob-C.el: Fix command to perform on remote host
* lisp/ob-C.el (org-babel-C-execute): Made sure name of compiled program is converted to local representation before sending it to the shell on remote host. The problem was when one would try to evaluate C source code block in the file on remote host. Compilation would go normally, then evaluation will fail with error like "/bin/sh: unable to find file prevents that. TINYCHANGE --- lisp/ob-C.el | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lisp/ob-C.el b/lisp/ob-C.el index 795bcb2..e54e174 100644 --- a/lisp/ob-C.el +++ b/lisp/ob-C.el @@ -161,7 +161,7 @@ or `org-babel-execute:C++' or `org-babel-execute:D'." (org-babel-eval (pcase org-babel-c-variant ((or `c `cpp) - (concat tmp-bin-file cmdline)) + (concat (org-babel-process-file-name tmp-bin-file) cmdline)) (`d (format "%s %s %s %s" org-babel-D-compiler
[O] Logging evaluation of the source block
Is there a way to log actions that org undertakes in process of evaluation of the code block? Preferably in such a way that all commands executed will be visible. Reason: i am suspecting org is not trying to evaluate source block on remote machine, but i need data to substantiate that claim
[O] Evaluating C code block on remote host
I am working on windows machine. I have last org version (from february
2017).
I have a remote host accessible by putty, where i have created org file of
the following contents:
#+TITLE C language things
* Simple hello-world program
#+NAME hello world on C
#+BEGIN_SRC C :dir /pscp:tcl:/home/tc/development :main no
#include
int main()
{
printf("Hello, world!");
return 0;
}
#+END_SRC
where tcl is name of saved putty configuration
When i evaluate codefragment, overall result is a failure (however, it is
not a crash, and toggling debug on yields no backtrace)
Here is what is output to *Message* buffer:
executing C code block...
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816iL0.c to
/pscp:tcl:/tmp/C-src-4816VBu.c...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816iL0.c to
/pscp:tcl:/tmp/C-src-4816VBu.c...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816hfJ.exe to
/pscp:tcl:/tmp/C-bin-4816UVD.exe...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816hfJ.exe to
/pscp:tcl:/tmp/C-bin-4816UVD.exe...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816upP.c to
/pscp:tcl:/tmp/C-src-4816VBu.c...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816upP.c to
/pscp:tcl:/tmp/C-src-4816VBu.c...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816I-b to
/pscp:tcl:/tmp/ob-input-48167zV...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816I-b to
/pscp:tcl:/tmp/ob-input-48167zV...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816iSo to
/pscp:tcl:/tmp/ob-error-4816VIi...
Tramp: Waiting for prompts from remote shell...
Tramp: Process has finished.
Tramp: Waiting for prompts from remote shell...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816iSo to
/pscp:tcl:/tmp/ob-error-4816VIi...done
Copying c:/Users/Ivan/AppData/Local/Temp/tramp.4816vcu to
/pscp:tcl:/tmp/ob-input-48167zV...failed
byte-code: Spawning child process: invalid argument
What is going on there? What does error in the end mean? Most importantly,
is code block being evaluated on remote host at all? Can output of
org-babel commands be turned on to get that information?
