Compiler switches in the source code

[Ágoston Bejó]

Hi there,
In the old Pascal-times, you could set compiler switches in the source code,
with a syntax like {$G+}, things like that (I don't remember them accurately
anymore).
Is there something similar with C++ compilers, e.g. to set the /GX switch
(unwind semantics for exception handling) on and off? This is what I mean if
it is still not clear:
// {GX+}
void funcWithExcHandling() {...}
// {GX-}
void funcWithoutExcHandling() {...}

Yeah, and one more question: Is there a newsgroup specifically for MS Visual
C++ compilers?

Thx,
Guszti

 

[Victor Bazarov]

Hi there,
In the old Pascal-times, you could set compiler switches in the source code,
with a syntax like {$G+}, things like that (I don't remember them accurately
anymore).
Is there something similar with C++ compilers, e.g. to set the /GX switch
(unwind semantics for exception handling) on and off? This is what I mean if
it is still not clear:
// {GX+}
void funcWithExcHandling() {...}
// {GX-}
void funcWithoutExcHandling() {...}

If there is, it's compiler-specific.

Yeah, and one more question: Is there a newsgroup specifically for MS Visual
C++ compilers?

microsoft.public.vc.*

 

[Thomas Matthews]

Hi there,
In the old Pascal-times, you could set compiler switches in the source code,
with a syntax like {$G+}, things like that (I don't remember them accurately
anymore).
Is there something similar with C++ compilers, e.g. to set the /GX switch
(unwind semantics for exception handling) on and off? This is what I mean if
it is still not clear:
// {GX+}
void funcWithExcHandling() {...}
// {GX-}
void funcWithoutExcHandling() {...}

In C++, they are called "pragmas". The usage is:
#pragma {compiler specific directive}

Note that there are no standard arguments to #pragma directives. These
preprocessing directives are meant as a tool to pass information to the
compiler. Also, the arguments of a #pragma may have one meaning to
one compiler, and a whole different meaning to another.

If the compiler doesn't understand the #pragma arguments, the directive
is ignored.

Yeah, and one more question: Is there a newsgroup specifically for MS Visual
C++ compilers?

Yes. Read the C++ FAQ and Welcome.Txt below.

Thx,
Guszti

--
Thomas Matthews

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