yes, I think I have got your mean, thank you.

2011/7/20 Dan Fandrich <dan_at_coneharvesters.com>

> On Tue, Jul 19, 2011 at 05:37:08PM +0800, balloon wrote:
> > So, if libcurl.a is completely static, it shouldn't depend on openssl,
> and
> > SSL_write won't be undefined symbol in libcurl. Am I right?
>
> No, not quite right. libcurl.a is static, therefore it is "completely"
> static. However, it is not self-contained--it must be linked with
> another library to satisfy the symbols it requires. These symbols include
> things like "strlen", "socket" as well as potentially other symbols like
> "BIO_new" and "SSL_write". How those symbols are resolved is up to you,
> the application programmer, either statically or dynamically--nothing
> in libcurl.a is dependent on one way or the other.
>
> If you decide to dynamically link in other libraries, then you'll have
> to ensure that those libraries (and their dependencies) are available
> at run-time. If you decide to statically link in libraries to satisfy
> those symbols, then you'll have to ensure that those libraries (and their
> dependencies) are available at application link time. Which method to
> use is decided at the time the libcurl-using application is linked and not
> before. libcurl.a is never going to be the sole library that is linked
> against
> an application to create a standalone program.
>
> >>> Dan
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Received on 2011-07-23