[Qemu-devel] How to compile qemu with openssl

[Qemu-devel] How to compile qemu with openssl

[Chunguang Li]

I need to use the SHA functions in migration/ram.c, 
and I have included the head file 
#include <openssl/sha.h>
Furthermore, I need to use flags "-lssl" and 
"-lcrypto" when compile qemu, could anyone please
tell me where to add these two flags?


Thanks,
Chunguang


--

Re: [Qemu-devel] How to compile qemu with openssl

[Fam Zheng]

On Fri, 10/14 20:07, Chunguang Li wrote:
> I need to use the SHA functions in migration/ram.c, 
> and I have included the head file 
> #include <openssl/sha.h>
> Furthermore, I need to use flags "-lssl" and 
> "-lcrypto" when compile qemu, could anyone please
> tell me where to add these two flags?

There are "--extra-ldflags" and "--extra-cflags" options in ./configure, where
you can add "-lssl" and "-lcrypto" to the compiling command lines.

If you are adding a feature to QEMU instead of experimenting, you should modify
./configure to add a new pair of "--enable-XXXX" and "--disable-XXXX" options.
For example, refer to how the "--enable-libiscsi" pair is handled in configure
script.  Particularly, features are automatically enabled if neither --enable-XXX nor
--disable-XXX is specified but the library package dependencies are actually
satisfied.

Fam

> 
> 
> Thanks,
> Chunguang
> 
> 
> --
> 
> 
> 

Re: [Qemu-devel] How to compile qemu with openssl

[Peter Maydell]

On 14 October 2016 at 16:07, Fam Zheng <famz@redhat.com> wrote:
> If you are adding a feature to QEMU instead of experimenting, you should modify
> ./configure to add a new pair of "--enable-XXXX" and "--disable-XXXX" options.
> For example, refer to how the "--enable-libiscsi" pair is handled in configure
> script.  Particularly, features are automatically enabled if neither --enable-XXX nor
> --disable-XXX is specified but the library package dependencies are actually
> satisfied.

We probably don't really want to add a feature that
links against OpenSSL anyway -- their FAQ suggests
it is GPL-incompatible:
https://www.openssl.org/docs/faq.html#LEGAL2

(disclaimer: based on a vague recollection of there
being an issue and 30 seconds googling)

thanks
-- PMM