Re: when linking on Solaris 64bit shared object using cc, -m64 should be used

[Petr Sumbera]

Dne 10.06.14 16:30, Bob Friesenhahn napsal(a):

On Mon, 9 Jun 2014, Petr Sumbera wrote:


Hi,

I'm often getting following error:

/usr/apr/1.5/build/sparcv9/libtool --silent --mode=link cc -o
mod_dtrace.la
-rpath /usr/apache2/2.2/libexec/sparcv9 -module -avoid-version
mod_dtrace.lo
ld: fatal: file .libs/mod_dtrace.o: wrong ELF class: ELFCLASS64
apxs:Error: Command failed with rc=131072

Attached patch fixes the issue.


Normally such options should already be included in CFLAGS (or sometimes
works better in CC).  All of the software needs to be compiled with the
same -m64 option.


In my case it's included during compilation but not included during 
linking. When ld is used instead of cc everything works.


Also using all CFLAGS during linking seemed to me inappropriate since 
most of them wouldn't be relevant for linking.


And finally I was uncertain with CC=cc -m64. It appeared to me as 
something what can cause some troubles and should be rather avoided.



When compiling using the Sun compiler and targeting 64-bits, I configure
using something like

   ./configure 'CC=/opt/SUNWspro/bin/cc -m64' ...

Libtool is not multilib capable under Solaris.  That is, it does not
automatically install a library into an architecture-specific
subdirectory or search there either.  You might notice that the system
does support different directories (e.g. '/lib/32', '/lib/64',
'/lib/amd64') and GCC is multilib capable, putting its own 64-bit
libraries in an architecture-specific subdirectory.


Yes. We do following:

https://hg.java.net/hg/solaris-userland~gate/file/aaef0df2e4f3/components/apr-1_5/patches/libtool.m4.patch

The second part of the patch is to workaround the linking problem I'm 
trying to find right solution.


Thanks,

Petr

when linking on Solaris 64bit shared object using cc, -m64 should be used

[Petr Sumbera]

Hi,

I'm often getting following error:

/usr/apr/1.5/build/sparcv9/libtool --silent --mode=link cc -o 
mod_dtrace.la

-rpath /usr/apache2/2.2/libexec/sparcv9 -module -avoid-version
mod_dtrace.lo
ld: fatal: file .libs/mod_dtrace.o: wrong ELF class: ELFCLASS64
apxs:Error: Command failed with rc=131072

Attached patch fixes the issue.

Note that I'm not libtool expert. Any feedback is welcomed.

Thanks,

Petr

--- build/libtool.m4
+++ build/libtool.m4
@@ -5432,11 +5445,16 @@
 
 solaris*)
   _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
+  for i in $LTCFLAGS; do
+case $i in
+  -m32|-m64) _LT_TAGVAR(addressing_model, $1)=$i;;
+esac
+  done
   if test $GCC = yes; then
wlarc='${wl}'
-   _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}-z ${wl}text 
${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
+   _LT_TAGVAR(archive_cmds, $1)='$CC ${addressing_model} -shared $pic_flag 
${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs 
$compiler_flags'
_LT_TAGVAR(archive_expsym_cmds, $1)='echo { global:  $lib.exp~cat 
$export_symbols | $SED -e s/\(.*\)/\1;/  $lib.exp~echo local: *; };  
$lib.exp~
- $CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h 
${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
+ $CC ${addressing_model} -shared $pic_flag ${wl}-z ${wl}text ${wl}-M 
${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs 
$compiler_flags~$RM $lib.exp'
   else
case `$CC -V 21` in
*Compilers 5.0*)
@@ -5447,9 +5465,9 @@
  ;;
*)
  wlarc='${wl}'
- _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h 
$soname -o $lib $libobjs $deplibs $compiler_flags'
+ _LT_TAGVAR(archive_cmds, $1)='$CC ${addressing_model} 
-G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
  _LT_TAGVAR(archive_expsym_cmds, $1)='echo { global:  $lib.exp~cat 
$export_symbols | $SED -e s/\(.*\)/\1;/  $lib.exp~echo local: *; };  
$lib.exp~
- $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs 
$deplibs $compiler_flags~$RM $lib.exp'
+ $CC ${addressing_model} -G${allow_undefined_flag} -M $lib.exp -h 
$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
  ;;
esac
   fi
@@ -5719,6 +5737,8 @@
 [Commands necessary for finishing linking programs])
 _LT_TAGDECL([], [file_list_spec], [1],
 [Specify filename containing input files])
+_LT_TAGDECL([], [addressing_model], [1],
+[Set 32-bit or 64-bit addressing model])
 dnl FIXME: Not yet implemented
 dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1],
 dnl[Compiler flag to generate thread safe objects])