FreeCAD 0.17 && /lib//libgcc_s.so.1

[Steve Kargl]

On Sun, Feb 17, 2019 at 12:37:36PM +0700, Eugene Grosbein wrote:
> 17.02.2019 12:11, Steve Kargl wrot:
> 
> > 
> > There is a problem with the order of libgcc_s.so.1
> > in the cache created by ldconfig.  rtld will use
> > the first one it finds.  If it fails, it fails.  It
> > does not look to see if there is a second entry.
> 
> If binary needs specific version of libgcc_s.so.1 installed
> with gcc8 port/package, then building system must use specific
> rpath, so rtld would not use "the first one it finds".

This is a well-known problem with libgcc_s.so.1 and gfortran.
You can state whatever you believe should happen, but it does
not seem to work that.  You have a few options:
1) Add -static to your options;
2) Use LD_LIBRARY_PATH, LD_RUN_PATH to point to
   /usr/local/lib/gcc8;
3) Add -Wl,-rpath=/usr/local/lib/gcc8 to FFLAGS in /etc/make.conf
   (check syntax for this one);
4) bump the major library version number for /lib/libgcc.so.1
   to 2;
5) fix rtld to not fail on the first found library in the cache.
   Iterated over all entries and only fail if the library isn't found;
6) rename /lib/libgcc_s.so.1 to /lib/libllvm_s.so.1 and teach
   llvm/clang/rtld to not misappropriate a well-known GCC library
   name.

-- 
Steve