Compiling custom FFMpeg. What do these errors mean?

Syllinger · 03-24-2012, 08:54 AM

Hello LQers,

I'm having a bit of a problem.

I'm trying to follow this guide, but when I get to the step where I have to compile a modified version of FFMpeg from source I am given the following error:

Code:

LD      ffserver_g
ffserver.o: In function `parse_ffconfig':
ffserver.c:(.text+0x9ce7): warning: Using 'dlopen' in statically linked applications requires at untime the shared libraries from the glibc version used for linking 
ffserver.o: In function `parse_acl_row':
ffserver.c:(.text+0x36ba): warning: Using 'getaddrinfo' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality in `/usr/lib/libc.a(strcmp.o)' can not be used when making an executable; recompile with -fPIE and relink with -pie
collect2: ld returned 1 exit statusmake: *** [ffserver_g] Error 1

Is anyone able to tell me what's going on here?

I appreciate any help I can get. Thanks!

jschiwal · 03-25-2012, 02:05 AM

It looks like you may need to remove the "--enable-static" build option and build ffmpeg with dynamic libraries.

I don't know why they have you using "sudo" in the configure stage. You should just need that in the "sudo make install" if you build ffmpeg in a directory you own.

Syllinger · 03-25-2012, 11:13 AM

Encountering the same error, just much later in the build.

I know that the server component works; I've tested it. However, I don't really understand what's going on here. Why am I building a customized version of FFmpeg? Also, why the heck is it not compiling? I'm using Ubuntu Server LTS 10.04.

Code:

LD      ffserver_g
ffserver.o: In function `parse_ffconfig':
ffserver.c:(.text+0x9ce7): warning: Using 'dlopen' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
ffserver.o: In function `parse_acl_row':
ffserver.c:(.text+0x36ba): warning: Using 'getaddrinfo' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: dynamic STT_GNU_IFUNC symbol `strcmp' with pointer equality in `/usr/lib/libc.a(strcmp.o)' can not be used when making an executable; recompile with -fPIE and relink with -pie
collect2: ld returned 1 exit status
make: *** [ffserver_g] Error 1