[Bug target/59888] ld: warning: PIE disabled. Absolute addressing (perhaps -mdynamic-no-pic) not allowed in code signed PIE ...

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59888

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
When I opened this PR I missed the "-fshared". With it I get the linker error.
On IRC Iain Sandoe gives the following workaround:

(1) gfc -S F03_iso.f90
(2) apply the following patch:

--- F03_iso.s    2014-01-20 20:54:05.000000000 +0100
+++ F03_iso_orig.s    2014-01-20 20:53:06.000000000 +0100
@@ -54,7 +54,7 @@ LCFI4:
 LCFI5:
     ret
 LFE1:
-    .const
+    .const_data
     .align 3
 LC2:
     .quad    _compute

(3) gfc -shared F03_iso.s -o F03_iso.dylib
(4) gfc F03_iso_main.f90 F03_iso.dylib with F03_iso_main.f90 being

  use F03_ISO_C
  use, intrinsic :: iso_c_binding

  implicit none

  integer :: F03_ISO_C_init
  integer :: i

  i = F03_ISO_C_init()

  print *, i
end

Then the executable outputs

           4493950477 is the address
           1

and otool -Lv gives

    F03_iso.dylib (compatibility version 0.0.0, current version 0.0.0)
    time stamp 2 Thu Jan  1 01:00:02 1970
    /opt/gcc/gcc4.9w/lib/libgfortran.3.dylib (compatibility version 4.0.0,
current version 4.0.0)
    time stamp 2 Thu Jan  1 01:00:02 1970
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version
1197.1.1)
    time stamp 2 Thu Jan  1 01:00:02 1970
    /opt/gcc/gcc4.9w/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current
version 1.0.0)
    time stamp 2 Thu Jan  1 01:00:02 1970
    /opt/gcc/gcc4.9w/lib/libquadmath.0.dylib (compatibility version 1.0.0,
current version 1.0.0)
    time stamp 2 Thu Jan  1 01:00:02 1970