[FFmpeg-devel] [PATCH] Fix static linking openssl library

[Alexandr Topilski]

Hi, on my machine i have built openssl libraries in static mode only, after
that i want to build ffmpeg library with https protocol support and
configuration failed (undefined reference to 'dlopen') in check_lib openssl
because for linking needed dl library, if linked .so libraries first
check(check_lib
openssl openssl/ssl.h SSL_library_init -lssl -lcrypto) successful.
ldd output is:
ldd /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
    linux-vdso.so.1 =>  (0x00007fff82a6a000)
    libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f6795038000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f6794c70000)
    /lib64/ld-linux-x86-64.so.2 (0x0000562ba7b11000)

small description of issue: https://github.com/FFmpeg/FFmpeg/pull/261

On Sat, Jun 10, 2017 at 2:38 PM, Ricardo Constantino <wiiaboo at gmail.com>
wrote:

> On 10 June 2017 at 09:13, <atopilski at gmail.com> wrote:
>
> > From: topilski <atopilski at gmail.com>
> >
> > ---
> >  configure | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/configure b/configure
> > index 4ec8f21..c92dd1f 100755
> > --- a/configure
> > +++ b/configure
> > @@ -5942,6 +5942,7 @@ enabled omx               && { check_header
> > OMX_Core.h || die "ERROR: OpenMAX IL
> >  enabled openssl           && { use_pkg_config openssl openssl/ssl.h
> > OPENSSL_init_ssl ||
> >                                 use_pkg_config openssl openssl/ssl.h
> > SSL_library_init ||
> >                                 check_lib openssl openssl/ssl.h
> > SSL_library_init -lssl -lcrypto ||
> > +                               check_lib openssl openssl/ssl.h
> > SSL_library_init -lssl -lcrypto -ldl ||
> >
>
> Why not just use the pkg-config with the proper --static flag?
>
>
> >                                 check_lib openssl openssl/ssl.h
> > SSL_library_init -lssl32 -leay32 ||
> >                                 check_lib openssl openssl/ssl.h
> > SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
> >                                 die "ERROR: openssl not found"; }
> > --
> > 2.10.2
> >
> > _______________________________________________
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> > ffmpeg-devel at ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
> >
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