[FFmpeg-user] How to enable external libraries but do not depend on them
barsnick at gmx.net
Sun Dec 23 20:00:40 EET 2018
On Sun, Dec 23, 2018 at 17:20:32 +0000, Taner Sener wrote:
> When make completes I have libavcodec.a, libavdevice.a, libavfilter.a,
> libavformat.a, libavutil.a, libswresample.a, libswscale.a static ibraries.
> But they depend on enabled libraries lib1.a, lib2.a, lib3.a, … .
That's quite normal. in other word the expected result.
> Is it possible to specify a flag so that ffmpeg static libraries will
> include enabled libraries lib1.a, lib2.a, etc. but will not depend on
> them. So I won’t need them (external libraries) to distribute ffmpeg,
> which would be easier for me?
You can't with the normal tool chain, but you can use some "tricks" to
combine them, assuming you know all the dependencies:
As it mentions, your resulting library will contain *everything* from
the dependencies. And the ffmpeg build process won't help you, *but*
the pkg-config files can tell you which libraries are the dependencies
of each ffmpeg library.
You could even omit e.g. libc, assuming it is always available on the
Only when linking a *binary* will the linker throw away the unneeded
symbols. I don't know of an easy way to do this for your bundled
library (though there may be a way).
Do you really plan to distibute such bundled libraries - not binaries?
With binaries (i.e. executables), no such problem exists.
More information about the ffmpeg-user