Compilation error on Debian x32 arch

[dod38fr]

Hello

Build is failing on x32 with this error:

libtool: link: gcc -shared  -fPIC -DPIC  .libs/bn_error.o .libs/bn_fast_mp_invmod.o .libs/bn_fast_mp_montgomery_reduce.o .libs/bn_fast_s_mp_mul_digs.o .libs/bn_fast_s_mp_mul_high_digs.o .libs/bn_fast_s_mp_sqr.o .libs/bn_mp_2expt.o .libs/bn_mp_abs.o .libs/bn_mp_add.o .libs/bn_mp_add_d.o .libs/bn_mp_addmod.o .libs/bn_mp_and.o .libs/bn_mp_clamp.o .libs/bn_mp_clear.o .libs/bn_mp_clear_multi.o .libs/bn_mp_cmp.o .libs/bn_mp_cmp_d.o .libs/bn_mp_cmp_mag.o .libs/bn_mp_cnt_lsb.o .libs/bn_mp_complement.o .libs/bn_mp_copy.o .libs/bn_mp_count_bits.o .libs/bn_mp_div.o .libs/bn_mp_div_2.o .libs/bn_mp_div_2d.o .libs/bn_mp_div_3.o .libs/bn_mp_div_d.o .libs/bn_mp_dr_is_modulus.o .libs/bn_mp_dr_reduce.o .libs/bn_mp_dr_setup.o .libs/bn_mp_exch.o .libs/bn_mp_export.o .libs/bn_mp_expt_d.o .libs/bn_mp_expt_d_ex.o .libs/bn_mp_exptmod.o .libs/bn_mp_exptmod_fast.o .libs/bn_mp_exteuclid.o .libs/bn_mp_fread.o .libs/bn_mp_fwrite.o .libs/bn_mp_gcd.o .libs/bn_mp_get_bit.o .libs/bn_mp_get_double.o .libs/bn_mp_get_int.o .libs/bn_mp_get_long.o .libs/bn_mp_get_long_long.o .libs/bn_mp_grow.o .libs/bn_mp_import.o .libs/bn_mp_init.o .libs/bn_mp_init_copy.o .libs/bn_mp_init_multi.o .libs/bn_mp_init_set.o .libs/bn_mp_init_set_int.o .libs/bn_mp_init_size.o .libs/bn_mp_invmod.o .libs/bn_mp_invmod_slow.o .libs/bn_mp_is_square.o .libs/bn_mp_jacobi.o .libs/bn_mp_karatsuba_mul.o .libs/bn_mp_karatsuba_sqr.o .libs/bn_mp_kronecker.o .libs/bn_mp_lcm.o .libs/bn_mp_lshd.o .libs/bn_mp_mod.o .libs/bn_mp_mod_2d.o .libs/bn_mp_mod_d.o .libs/bn_mp_montgomery_calc_normalization.o .libs/bn_mp_montgomery_reduce.o .libs/bn_mp_montgomery_setup.o .libs/bn_mp_mul.o .libs/bn_mp_mul_2.o .libs/bn_mp_mul_2d.o .libs/bn_mp_mul_d.o .libs/bn_mp_mulmod.o .libs/bn_mp_n_root.o .libs/bn_mp_n_root_ex.o .libs/bn_mp_neg.o .libs/bn_mp_or.o .libs/bn_mp_prime_fermat.o .libs/bn_mp_prime_frobenius_underwood.o .libs/bn_mp_prime_is_divisible.o .libs/bn_mp_prime_is_prime.o .libs/bn_mp_prime_miller_rabin.o .libs/bn_mp_prime_next_prime.o .libs/bn_mp_prime_rabin_miller_trials.o .libs/bn_mp_prime_random_ex.o .libs/bn_mp_prime_strong_lucas_selfridge.o .libs/bn_mp_radix_size.o .libs/bn_mp_radix_smap.o .libs/bn_mp_rand.o .libs/bn_mp_read_radix.o .libs/bn_mp_read_signed_bin.o .libs/bn_mp_read_unsigned_bin.o .libs/bn_mp_reduce.o .libs/bn_mp_reduce_2k.o .libs/bn_mp_reduce_2k_l.o .libs/bn_mp_reduce_2k_setup.o .libs/bn_mp_reduce_2k_setup_l.o .libs/bn_mp_reduce_is_2k.o .libs/bn_mp_reduce_is_2k_l.o .libs/bn_mp_reduce_setup.o .libs/bn_mp_rshd.o .libs/bn_mp_set.o .libs/bn_mp_set_double.o .libs/bn_mp_set_int.o .libs/bn_mp_set_long.o .libs/bn_mp_set_long_long.o .libs/bn_mp_shrink.o .libs/bn_mp_signed_bin_size.o .libs/bn_mp_sqr.o .libs/bn_mp_sqrmod.o .libs/bn_mp_sqrt.o .libs/bn_mp_sqrtmod_prime.o .libs/bn_mp_sub.o .libs/bn_mp_sub_d.o .libs/bn_mp_submod.o .libs/bn_mp_tc_and.o .libs/bn_mp_tc_div_2d.o .libs/bn_mp_tc_or.o .libs/bn_mp_tc_xor.o .libs/bn_mp_to_signed_bin.o .libs/bn_mp_to_signed_bin_n.o .libs/bn_mp_to_unsigned_bin.o .libs/bn_mp_to_unsigned_bin_n.o .libs/bn_mp_toom_mul.o .libs/bn_mp_toom_sqr.o .libs/bn_mp_toradix.o .libs/bn_mp_toradix_n.o .libs/bn_mp_unsigned_bin_size.o .libs/bn_mp_xor.o .libs/bn_mp_zero.o .libs/bn_prime_tab.o .libs/bn_reverse.o .libs/bn_s_mp_add.o .libs/bn_s_mp_exptmod.o .libs/bn_s_mp_mul_digs.o .libs/bn_s_mp_mul_high_digs.o .libs/bn_s_mp_sqr.o .libs/bn_s_mp_sub.o .libs/bncore.o    -specs=/usr/share/dpkg/pie-link.specs -Wl,-z -Wl,relro -Wl,-z -Wl,now   -Wl,-soname -Wl,libtommath.so.1 -o .libs/libtommath.so.1.1.0
/usr/bin/ld: .libs/bn_mp_fread.o: relocation R_X86_64_PC32 against symbol `mp_s_rmap_reverse_sz' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: bad value

bn_mp_fread.o is compiled this way:

libtool --mode=compile --tag=CC cc -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -specs=/usr/share/dpkg/pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -I./ -Wall -Wsign-compare -Wextra -Wshadow -Wsystem-headers -Wdeclaration-after-statement -Wbad-function-cast -Wcast-align -Wstrict-prototypes -Wpointer-arith -O3 -funroll-loops -fomit-frame-pointer -specs=/usr/share/dpkg/pie-link.specs -Wl,-z,relro -Wl,-z,now -o bn_mp_fread.o -c bn_mp_fread.c
libtool: compile:  cc -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -specs=/usr/share/dpkg/pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -I./ -Wall -Wsign-compare -Wextra -Wshadow -Wsystem-headers -Wdeclaration-after-statement -Wbad-function-cast -Wcast-align -Wstrict-prototypes -Wpointer-arith -O3 -funroll-loops -fomit-frame-pointer -specs=/usr/share/dpkg/pie-link.specs -Wl,-z,relro -Wl,-z,now -c bn_mp_fread.c  -fPIC -DPIC -o .libs/bn_mp_fread.o
libtool: compile:  cc -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -specs=/usr/share/dpkg/pie-compile.specs -fstack-protector-strong -Wformat -Werror=format-security -I./ -Wall -Wsign-compare -Wextra -Wshadow -Wsystem-headers -Wdeclaration-after-statement -Wbad-function-cast -Wcast-align -Wstrict-prototypes -Wpointer-arith -O3 -funroll-loops -fomit-frame-pointer -specs=/usr/share/dpkg/pie-link.specs -Wl,-z,relro -Wl,-z,now -c bn_mp_fread.c -o bn_mp_fread.o >/dev/null 2>&1

Here's the full log of this build

All the best

[sjaeckel]

well this reminds me immediately of https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=879027 where I still didn't have the time to investigate further resp. forgot about it ...

[czurnieden]

It compiles with GCC with __attribute__((visibility ("hidden"))) for the extern variables. See #155 for an example. But "It compiles!" is all I could utter here.

[czurnieden]

A little bit of progress: it (#155 that is) builds and tests (test_standalone) well on a local instance of Debians auto-packager (with sbuild 0.78.0 in a chroot in a qemu-virtualized instance of Debian unstable with x32 kernel-support switched on, on top of a Mint-Rebecca based Linux. Took me hours! Never thought I'd be happy to see a "Build failed" ;-) ).

[minad]

discussion happening in #155