[Bug target/22082] Can't link 64-bit shared libraries with Xcode 2.1

[lucier at math dot purdue dot edu]

------- Additional Comments From lucier at math dot purdue dot edu  2005-06-15 19:19 -------
Subject: Re:  Can't link 64-bit shared libraries with Xcode 2.1


On Jun 15, 2005, at 1:56 PM, pinskia at gcc dot gnu dot org wrote:

>
> ------- Additional Comments From pinskia at gcc dot gnu dot org   
> 2005-06-15 18:56 -------
> (In reply to comment #6)
>
>> [descartes:~/programs/gambc40b13] lucier% file lib/libgambc.dylib
>> lib/libgambc.dylib: Mach-O 64-bit executable ppc64
>>
>
> executable, that means it is not linkable.  I would double check  
> you GCC invocation for making
> libgambc.dylib because it is not generating a library.

Thank you very much for this suggestion, I see

/pkgs/gcc-4.0-branch/bin/gcc -mcpu=970 -m64 -force_cpusubtype_ALL - 
flat_namespace -undefined suppress -o libgambc.dylib main.o setup.o  
mem.o c_intf.o os.o os_base.o os_time.o os_shell.o os_files.o  
os_dyn.o os_tty.o os_io.o _kernel.o _system.o _num.o _std.o _eval.o  
_io.o _nonstd.o _thread.o _repl.o _gambc.o

versus

/pkgs/gcc-4.0.0/bin/gcc -mcpu=970 -m64 -force_cpusubtype_ALL - 
dynamiclib -flat_namespace -undefined suppress -o libgambc.dylib  
main.o setup.o mem.o c_intf.o os.o os_base.o os_time.o os_shell.o  
os_files.o os_dyn.o os_tty.o os_io.o _kernel.o _system.o _num.o  
_std.o _eval.o _io.o _nonstd.o _thread.o _repl.o _gambc.o

and the configuration log for gcc-4.0-branch says

configure:15317: checking whether /pkgs/gcc-4.0-branch/bin/gcc - 
mcpu=970 -m64 -force_cpusubtype_ALL accepts -dynamiclib
configure:15338: /pkgs/gcc-4.0-branch/bin/gcc -mcpu=970 -m64 - 
force_cpusubtype_ALL -o conftest -dynamiclib   conftest.c  >&5
ld64 failed: library not found for -lgcc_s
/usr/bin/libtool: internal link edit command failed

(which is as you've been saying) versus for 4.0.0

configure:15317: checking whether /pkgs/gcc-4.0.0/bin/gcc -mcpu=970 - 
m64 -force_cpusubtype_ALL accepts -dynamiclib
configure:15338: /pkgs/gcc-4.0.0/bin/gcc -mcpu=970 -m64 - 
force_cpusubtype_ALL -o conftest -dynamiclib   conftest.c  >&5
configure:15341: $? = 0
configure:15355: result:  -dynamiclib

And it does work with 4.0.0:

[descartes:/pkgs/gcc-4.0.0] lucier% cat conftest.c
int
main ()
{
   return 0;
}

[descartes:/pkgs/gcc-4.0.0] lucier% /pkgs/gcc-4.0.0/bin/gcc -mcpu=970  
-m64 -force_cpusubtype_ALL -o conftest -dynamiclib conftest.c -v
Using built-in specs.
Target: powerpc-apple-darwin8.1.0
Configured with: ../configure --prefix=/pkgs/gcc-4.0.0 --with-gmp=/ 
pkgs/gmp-4.1.3 --with-mpfr=/pkgs/gmp-4.1.3
Thread model: posix
gcc version 4.0.0
/pkgs/gcc-4.0.0/libexec/gcc/powerpc-apple-darwin8.1.0/4.0.0/cc1 - 
quiet -v -D__DYNAMIC__ -D__APPLE_CC__=1 conftest.c -fPIC -quiet - 
dumpbase conftest.c -mcpu=970 -m64 -auxbase conftest -version -o /var/ 
tmp//ccKu5zS6.s
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/pkgs/gcc-4.0.0/lib/gcc/powerpc-apple- 
darwin8.1.0/4.0.0/../../../../powerpc-apple-darwin8.1.0/include"
#include "..." search starts here:
#include <...> search starts here:
/pkgs/gcc-4.0.0/include
/pkgs/gcc-4.0.0/lib/gcc/powerpc-apple-darwin8.1.0/4.0.0/include
/usr/include
/System/Library/Frameworks
/Library/Frameworks
End of search list.
GNU C version 4.0.0 (powerpc-apple-darwin8.1.0)
         compiled by GNU C version 4.0.0.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min- 
heapsize=131072
as -arch ppc64 -force_cpusubtype_ALL -o /var/tmp//ccCtfLGH.o /var/ 
tmp//ccKu5zS6.s
/usr/bin/libtool -dynamic -arch_only ppc64 -noall_load - 
weak_reference_mismatches non-weak -o conftest -L/pkgs/gcc-4.0.0/lib/ 
gcc/powerpc-apple-darwin8.1.0/4.0.0 -L/pkgs/gcc-4.0.0/lib/gcc/powerpc- 
apple-darwin8.1.0/4.0.0/../../.. /var/tmp//ccCtfLGH.o -lgcc_s -lgcc - 
lSystemStubs -lmx -lSystem
[descartes:/pkgs/gcc-4.0.0] lucier% file conftest
conftest: Mach-O 64-bit dynamically linked shared library ppc64

So it works with 4.0.0, but not with 4.0-branch:

[descartes:~/programs/gambc40b13] lucier% /pkgs/gcc-4.0-branch/bin/ 
gcc -mcpu=970 -m64 -force_cpusubtype_ALL -o conftest.o -dynamiclib  
conftest.c -v
Using built-in specs.
Target: powerpc-apple-darwin8.1.0
Configured with: ../configure --prefix=/pkgs/gcc-4.0-branch --with- 
gmp=/pkgs/gmp-4.1.3 --with-mpfr=/pkgs/gmp-4.1.3
Thread model: posix
gcc version 4.0.1 20050615 (prerelease)
/pkgs/gcc-4.0-branch/libexec/gcc/powerpc-apple-darwin8.1.0/4.0.1/cc1 - 
quiet -v -D__DYNAMIC__ -D__APPLE_CC__=1 conftest.c -fPIC -quiet - 
dumpbase conftest.c -mcpu=970 -m64 -auxbase conftest -version -o /var/ 
tmp//cctbhV9h.s
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/pkgs/gcc-4.0-branch/lib/gcc/powerpc- 
apple-darwin8.1.0/4.0.1/../../../../powerpc-apple-darwin8.1.0/include"
#include "..." search starts here:
#include <...> search starts here:
/pkgs/gcc-4.0-branch/include
/pkgs/gcc-4.0-branch/lib/gcc/powerpc-apple-darwin8.1.0/4.0.1/include
/usr/include
/System/Library/Frameworks
/Library/Frameworks
End of search list.
GNU C version 4.0.1 20050615 (prerelease) (powerpc-apple-darwin8.1.0)
         compiled by GNU C version 4.0.1 20050615 (prerelease).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min- 
heapsize=131072
as -arch ppc64 -force_cpusubtype_ALL -o /var/tmp//ccsSIHVj.o /var/ 
tmp//cctbhV9h.s
/usr/bin/libtool -dynamic -arch_only ppc64 -noall_load - 
weak_reference_mismatches non-weak -o conftest.o -L/pkgs/gcc-4.0- 
branch/lib/gcc/powerpc-apple-darwin8.1.0/4.0.1 -L/pkgs/gcc-4.0-branch/ 
lib/gcc/powerpc-apple-darwin8.1.0/4.0.1/../../.. /var/tmp//ccsSIHVj.o  
-lgcc_s -lgcc -lSystemStubs -lmx -lSystem
ld64 failed: library not found for -lgcc_s
/usr/bin/libtool: internal link edit command failed



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22082