Latest  code pulled from git and Ubuntu 22.04 fully updated.  a make produces the following error:

```  CC quickjs/quickjs-libc.c
/usr/bin/ld: /usr/local/lib/libswscale.a(swscale.o): warning: relocation against `ff_M24B' in read-only section `.text'
/usr/bin/ld: /usr/local/lib/libswscale.a(swscale.o): relocation R_X86_64_PC32 against symbol `ff_M24A' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:387: ../bin/gcc/libgpac.so] Error 1
```
Build make fails
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Build make fails
Issue date:

--- start body ---
Latest  code pulled from git and Ubuntu 22.04 fully updated.  a make produces the following error:

```  CC quickjs/quickjs-libc.c
/usr/bin/ld: /usr/local/lib/libswscale.a(swscale.o): warning: relocation against `ff_M24B' in read-only section `.text'
/usr/bin/ld: /usr/local/lib/libswscale.a(swscale.o): relocation R_X86_64_PC32 against symbol `ff_M24A' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:387: ../bin/gcc/libgpac.so] Error 1
```
--- end body ---
