building libobjc2 fPIC issue and ccmake . effectiveness

[Riccardo Mottola]

Hi!

I am trying to build libobjc2 on NetBSD

Linking fails (standard system linker)

[  0%] Linking C shared library libobjc.so
/usr/bin/ld: /usr/lib/libsupc++.a(eh_globals.o): relocation
R_X86_64_TPOFF32 against `_ZZN12_GLOBAL__N_110get_globalEvE6global' can
not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: /usr/lib/libsupc++.a(si_class_type_info.o): relocation
R_X86_64_PC32 against symbol `_ZTVN10__cxxabiv120__si_class_type_infoE'
can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: bad value
clang-9: error: linker command failed with exit code 1 (use -v to see
invocation)
*** Error code 1

To follow the suggestion I used "ccmake ." and set:
 CMAKE_CXX_FLAGS                  -fPIC    
 CMAKE_C_FLAGS                    -fPIC     

but there is no change... are these settings used after regenerating?
(I have this doubt... since I have other linker related issues on
OpenBSD I am about to report)

Thanks for the support