We shouldn't but on Windows it should make no difference to GCC, and as far as I saw, there is no specific PIC code in the assembly files chosen on my setup which could be triggered by the "-DPIC" define.
2014-04-01 22:52 GMT+02:00 Bill Hart <goodwillh...@googlemail.com>: > On the other hand, should we be passing -fPIC to gcc? > > Bill. > > > On 1 April 2014 22:47, Bill Hart <goodwillh...@googlemail.com> wrote: >> >> Surely a compiler error then. >> >> I can't seem to get libspeed or try to build on Cygwin64. It looses the >> include and lib directories in the gcc invocation. >> >> But I think you've found the problem, for sure. >> >> Bill. >> >> >> On 1 April 2014 22:40, Jean-Pierre Flori <jpfl...@gmail.com> wrote: >>> >>> >>> >>> On Tuesday, April 1, 2014 10:36:05 PM UTC+2, Jean-Pierre Flori wrote: >>>> >>>> What look strange to me is the way the function is called. >>>> All other function calls use rip or a different address range. >>>> >>>> E.g. for the call in t-neg: >>>> 39 gmp_randinit_default(rands); >>>> >>>> First it goes through the import lib: >>>> 0x00000001004010fa <+42>: mov 0x818f(%rip),%rax # >>>> 0x100409290 <__imp___gmp_randinit_default> >>>> 0x0000000100401101 <+49>: callq *%rax >>>> >>>> And %rax looks saner: >>>> (gdb) info reg >>>> rax 0x4ff1e1550 21460030800 >>>> >>>> Just as in cygmpir-16.dll: >>>> 00000004ff1e1550 T __gmp_randinit_default >>>> >>>> In particularn in the mpn_store direct call, the leading 4 is missing... >>> >>> >>> And: >>> (gdb) r >>> The program being debugged has been started already. >>> Start it from the beginning? (y or n) y >>> >>> Starting program: /home/jp/mpir-flori.git/tests/mpn/.libs/t-neg >>> [New Thread 3836.0x408] >>> [New Thread 3836.0x26c] >>> >>> Program received signal SIGSEGV, Segmentation fault. >>> 0x00000000ff2746c0 in ?? () >>> (gdb) x/i $pc >>> => 0xff2746c0: Cannot access memory at address 0xff2746c0 >>> (gdb) x/i $pc + 0x400000000 >>> 0x4ff2746c0 <__gmpn_store>: lea -0x20(%rcx),%rcx >>> (gdb) >>> >> > -- Jean-Pierre Flori -- You received this message because you are subscribed to the Google Groups "mpir-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to mpir-devel+unsubscr...@googlegroups.com. To post to this group, send email to mpir-devel@googlegroups.com. Visit this group at http://groups.google.com/group/mpir-devel. For more options, visit https://groups.google.com/d/optout.
