[ug-bosug] datails abt dos.h

[sawitha h]

Please define: datails
define: abt
define dos.h
and finally unsubscribe me.

TIA


--- Ananth A <writetoananth at gmail.com> wrote:

> On 4/7/06, Moinak Ghosh <Moinak.Ghosh at sun.com>
> wrote:
> >   There are three things that you seem to imply
> here: 1) Compiling just the
> >   changed files as opposed to compiling all the
> source files; 2) Compiling
> >   parts of changed files as opposed to compiling
> all the files; 3) Pre-
> >   compiled headers.
> >
> >   As for #1, it is the normal behavior even on
> *NIX systems if you have the
> >   Makefiles set up properly. Make takes care of
> tracking file modifications
> >   and invokes gcc for only the changed files.
> >
> >    As for #2, I am not sure whether Tc or MVC does
> this, but maybe this is
> >    done at the function level.
> >
> >    #3 is supported by gcc with the appropriate
> options.
> 
> i was referring to #2. compiling parts of changed
> files, not the whole file.
> 
> 
> >
> >    Technically the term conditional compilation 
> applies to preprocessor
> >    directives that control which source lines are
> processed by the
> > compiler.
> 
> using #ifdef, #define and so on.. yes, im aware of
> that. i think i
> might have got the terms mixed up a bit...    cant
> remember the exact
> term right now, will mail back later.
> 
> 
> >   Yeah C++ compilation is always slower due to
> overheads. Have you tried
> >   adding   extern "C"  for you hello world program
> to force C linkage and
> >   disable the C++
>
poly-mangled-virtual-inherited-temporarily-constructed-
> >   referential overheads ?   I dunno whether this
> will help though. :-P
> 
> not just compiling but execution speed ( as per wall
> clock) is also slower.
> 
> most of the overheads were disabled using the cmd
> line options to g++...
> 
> Ananth
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