Re: "Windows Programing" beginner questions concerning libraries
So I guess using -MT or -MD "overall" is basically the question
"dynamic linking or static linking", which is up to personal taste and
none of both is considered superior or depreciated.
MS would appear to prefer us to use the DLL run-time - there's a story
put forward that this will allow them to install updated DLLs to fix
issues. I don't buy that myself, I can't see them doing it as it would
likely cause as many issues as it would fix.
The situtaion is different if I rely on ie. creating an object in my
library, hand it to the user of the library and rely on him to free it
or anything similar to that. If I do that I do have to use -MD.
Correct, without a shared common allocator it'd just blow up.
But even if I know this doesn't happen, -MD is by no means "wrong" or bad
compared to -MT.
No - not that I'm aware of.
The situation is also different if I use a library myself: I do have
to use the same flag as the library does.
I don't necessarily think you have to - but I think life may be easier
if you did.
The same is true for DLLs: -MD is not a must for DLLs. If for whatever
reason I want my .DLL to have it's own copy of the CRT, thats fine.
Is that correct up to here?
Yes - I believe so.
Two questions arise for me: if I have to libraries and one is compiled
using -MT, the other one using -MD, how can I use both in
my .EXE, .DLL or .LIB?
As I alluded to earlier, it may work out, but you may find you get
some horrible linking issues.
Concerning boost: I think I was wrong with my assumption. I just found
this page:
http://www.boost.org/doc/libs/1_36_0/more/getting_started/windows.html#library-naming
According to the naming convention I think that:
libboost_name-vc90-mt.lib has multithreading enabled and is
dynamically linked => -MD
libboost_name-vc90-mt-gs.lib has multithreading enabled and is
statically linked => -MT
I'm afraid I don't know the boost building system.
Dave