topic Re: C Compile Flags in Operating System - OpenVMS

C Compile Flags

mephisto890 — Thu, 26 Oct 2006 09:55:26 GMT

I have C source code currently running on VMS 7.2 and we use the DEC C 6.0 compiler.
We use the Vax C compatibility switch to compile the code as well.

We are having some problems with the include files during compilation.

I want to see all the include files during the precomipled phase to create a single file for compile analysis. In ANSI C, the developer would set a flag to create a .i or .p file which has all the include file references in the source code.

I am search for a like precompile FLAG to create a similier file on the VMS environment we are currently working on.

Thanks in Advance.

Re: C Compile Flags

Robert Gezelter — Thu, 26 Oct 2006 09:59:44 GMT

mephisto890,

I believe that you will find this is the /PREPROCESS_ONLY qualifier. Check the HELP text for how to direct the resulting output file.

I would recommend checking the HELP text for the CC command to see if any of the other qualifiers are appropriate for your situation.

- Bob Gezelter, http://www.rlgsc.com

Re: C Compile Flags

Bojan Nemec — Thu, 26 Oct 2006 10:13:21 GMT

Maybe this will do the task:

$ CC /LIST/SHOW=INCLUDE ...

This will produce a listing with all #include included.

For more see: $ HELP CC /SHOW

Bojan

Re: C Compile Flags

mephisto890 — Thu, 26 Oct 2006 10:53:33 GMT

Robert.....

Would I include the /PREPROCESS_ONLY flag in the make file right???

Re: C Compile Flags

Bojan Nemec — Thu, 26 Oct 2006 11:10:15 GMT

With the /PREPROCESS_ONLY the compiler executes only the preprocess phase and will create a preprocessed file (no # commands except #line).

With the /LIST/SHOW the compiler creates the object file (.OBJ) and a listing file (.LIS).

So it depends on yours make file. If some parts depends on created object files that parts of make will not execute.

Bojan

Re: C Compile Flags

Steven Schweda — Thu, 26 Oct 2006 11:22:36 GMT

I use "/show = (all,nomessages)", to get the
macro expansions, too.

> [...] In ANSI C [...]

You seem to be coming from UNIX. Around here,
we can get onject files and compiler listings
in one pass.