On 07/07/16 12:05, Richter, Arne wrote:
Not what I hopped for but what I suspected.
Have you tried your test-pipeline with a commercial simulator ?
I fear that would be even harder.
Thanks for the quick answer!
You're welcome.
Tristan.
Best regards,
Arne
Am 06.07.2016 um 06:24 schrieb Tristan Gingold <tging...@free.fr>:
On 05/07/16 21:56, Richter, Arne wrote:
Hi all,
I'm currently trying to build a test-pipeline using Python to describe
my test cases. Now I want to add GHDL tests into my pipeline by
compiling them with a C wrapper into a shared library.
So far so good. With the prebuilt OSX version everything works (except
the procedure's). But if I now try to fresh build version under linux,
the same makefile fails.
I repeatedly get the error:
/usr/bin/ld: e~tb_rand.o: relocation R_X86_64_32 against `.bss' can not
be used when making a shared object; recompile with -fPIC
e~tb_rand.o: error adding symbols: Bad value
Got anyone a clue for me? I'm currently not even sure if automatically
build libraries might cause the problem.
The problem is that to create a shared library on x86-64 linux files
must be compiled with -fPIC.
By default, this is not the case when using ghdl -a or ghdl -e.
You could add the -fPIC switch at that point (I haven't tested that), but then
you will hit the next issue: the program is also linked with libgrt.a, which is
not compiled with -fPIC too.
So you have to rebuild libgrt.a with the -fPIC option. Maybe ghdl should be
enhanced to also have a libgrt.so.
It might be simpler to slightly redesign your test-pipeline architecture not to
rely on that mechanism.
Regards,
Tristan.
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