Compiling from native to managed VC++ /clr option dramatically enlarge static lib size.

  • Thread starter Thread starter dovgani
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dovgani

I have an unmanaged MFC project. The output is static lib. I would like
to compile using /clr option. The native lib size is 64 megs and with
/clr and /O1 options is 940 megs.
Is it possibly Metadata enlarge size so dramaticlly?
And I would like to know any suitable solution of my problem.
 
dovgani said:
I have an unmanaged MFC project. The output is static lib. I would like
to compile using /clr option. The native lib size is 64 megs and with
/clr and /O1 options is 940 megs.
Is it possibly Metadata enlarge size so dramaticlly?
And I would like to know any suitable solution of my problem.
Click to expand...

I guess that you compile all your souce files with /clr. This is seldom
necessary. Consider compiling only those filed with /clr that you really
need to compile to managed code. In the best case, write managed code in a
separate source file and call it from you native code.
 
I have an unmanaged MFC project. The output is static lib. I would like
I guess that you compile all your souce files with /clr. This is seldom
necessary. Consider compiling only those filed with /clr that you really
need to compile to managed code. In the best case, write managed code in a
separate source file and call it from you native code.
Click to expand...

But even so, this is a 15 times increase in size. is this normal?

--

Kind regards,
Bruno van Dooren
(e-mail address removed)
Remove only "_nos_pam"
 
Bruno said:
But even so, this is a 15 times increase in size. is this normal?
Click to expand...

It may well be. Consider that the native version has virtually no metadata,
while the managed version has full metadata; including metadata describing
the contents of <windows.h> (or at least parts of it), if it's been
included.

-cd
 
Bruno van Dooren said:
But even so, this is a 15 times increase in size. is this normal?

--

Kind regards,
Bruno van Dooren
(e-mail address removed)
Remove only "_nos_pam"
Click to expand...

If you compile everything with /clr, this is possible. Roughly spoken,
without /clr, the only metadata is the decoated method names. With /clr, for
eyery function, there is the decorated name (as before), an entry in the
method table, the undecorated name, a custom attribute containing the
decorated name, the method's signature, including C++/CLI specific signature
modifiers ...

As Carl has mentioned, in addition to that there is a P/Invoke function
definition for every native function that is called in the code. For each
P/Invoke function definition, there is a similar overhead as described
above. If the lib contains many functions that wrap another functions 1:1,
the P/Invoke metadata can be a huge amount.

Marcus
 
Marcus said:
If you compile everything with /clr, this is possible. Roughly spoken,
without /clr, the only metadata is the decoated method names. With /clr, for
eyery function, there is the decorated name (as before), an entry in the
method table, the undecorated name, a custom attribute containing the
decorated name, the method's signature, including C++/CLI specific signature
modifiers ...

As Carl has mentioned, in addition to that there is a P/Invoke function
definition for every native function that is called in the code. For each
P/Invoke function definition, there is a similar overhead as described
above. If the lib contains many functions that wrap another functions 1:1,
the P/Invoke metadata can be a huge amount.

Marcus
Click to expand...

Thank you guys.
A little more details.
I have large(very large) application. Static library I am talking about
is presentation lib
I would like to use a new .NET controls (menu, toolbar).
Another words just to dress a new shell.
After our discussion. I think the best way is to rewrite that lib in
managed code.
But this is not easy job.
 
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