To: C Class members (c_class98@jlab.org)
Here are some general comments on how to use c compilers on the JLab Unix systems
(Common User Environment , hosts)
( in what follows ">" represents the system prompt )
How to get help.
> man -k xxxxxx xxxxxx is a topic or key word to help you identify what you want to
look up.
example:
> man -k compile
cccp, cpp (1) - The GNU C-Compatible Compiler Preprocessor.
g++ (1) - GNU project C++ Compiler
gcc, g++ (1) - GNU project C and C++ Compiler (v2.7)
and much more
How to launch the C compiler(s)
on most machines there is a default C compiler launched by:
> cc file_name.c
If typed in this manner you will generate one or more files and perhaps some
error messages . The executable will be in "a.out" , an unfortunate historical standard.
do:
> man cc
to see more options two of which are:
-o path_name to change the output file name
-g to produce debugger data in the output file.
> man -g -o my_test_executable my_test.c
You may use the gnu ( gnu not unix ) compilers if you wish by doing:
> setup gnu
> gcc -option(s) my_file.c
You may execute the program debugger (one of several ):
> dbx my_test_executable
(dbx)
type help at the (dbx) prompt to see what commands are available.
Hope this helps. For more information I strongly suggest contacting some
other c programmers here at Jefferson Lab.
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