Need help changing a makefile to static linking


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Need help changing a makefile to static linking

Hi all,

I'm having a hard time compiling a plugin (softhddevice) for the video disk recorder software (vdr). Unfortunately the last official version of the plugin was published back in 2013 and even worse it has to be compiled against ffmpeg. The last working version of ffmpeg was 2.8.x, patches should make it work with 3.5.x (if you can find them). It's definitely not working with ffmpeg 4.x
So my thought was to forget about all the trouble with different versions and compile the plugin against a static built and working version of ffmpeg.
That was the quickly found plan, but the implementation is more than difficult if you are not used to deal with makefiles.
I tried to copy parts of the makefile(s) of tvheadend (which btw does exactly what I have in mind) that simply adds the .a files to the linking command. But without success. I know that there's the possibility to tell pck-config to use static libraries, but I have no glue where exactly in the makefile I have to insert this command and how I can force pkg-config to search within the ffmpeg directory.
I hope someone can push me in the right direction.
Thanks in advance
Alex
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dlerror(3C)						   Standard C Library Functions 					       dlerror(3C)

NAME
dlerror - get diagnostic information SYNOPSIS
#include <dlfcn.h> char *dlerror(void); DESCRIPTION
The dlerror() function returns a null-terminated character string that describes the last error that occurred during dynamic linking pro- cessing. The returned string contains no trailing newline. If no dynamic linking errors have occurred since the last invocation of dler- ror(), dlerror() returns NULL. Thus, invoking dlerror() a second time, immediately following a prior invocation, results in NULL being returned. USAGE
The dlerror() function is one of a family of functions that give the user direct access to the dynamic linking facilities. These facilities are available to dynamically-linked processes only. See Linker and Libraries Guide. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
ld(1), dladdr(3C), dlclose(3C), dldump(3C), dlopen(3C), dlsym(3C), attributes(5), standards(5) Linker and Libraries Guide NOTES
The messages returned by dlerror() can reside in a static buffer that is overwritten on each call to dlerror(). Application code should not write to this buffer. Programs wanting to preserve an error message should make their own copies of that message. SunOS 5.10 1 Mar 2004 dlerror(3C)

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