libtool issue with latest Sun cc compiler on Linux

[Terry D. Dontje]

In compiling OMPI 1.2 with Sun cc compiler on Linux I am getting the 
following on result from make:

> libtool: link: suncc -G class/.libs/opal_free_list.o 
> class/.libs/opal_hash_table.o class/.libs/opal_list.o 
> class/.libs/opal_object.o class/.libs/opal_atomic_lifo.o 
> class/.libs/opal_value_array.o memoryhooks/.libs/memory.o 
> runtime/.libs/opal_progress.o runtime/.libs/opal_finalize.o 
> runtime/.libs/opal_init.o runtime/.libs/opal_params.o 
> threads/.libs/condition.o threads/.libs/mutex.o threads/.libs/thread.o 
> -Wl,--whole-archive,libltdl/.libs/libltdlc.a,asm/.libs/libasm.a,event/.libs/libevent.a,mca/base/.libs/libmca_base.a,util/.libs/libopalutil.a,mca/backtrace/.libs/libmca_backtrace.a,mca/backtrace/execinfo/.libs/libmca_backtrace_execinfo.a,mca/maffinity/.libs/libmca_maffinity.a,mca/memcpy/.libs/libmca_memcpy.a,mca/memory/.libs/libmca_memory.a,mca/memory/ptmalloc2/.libs/libmca_memory_ptmalloc2.a,mca/paffinity/.libs/libmca_paffinity.a,mca/timer/.libs/libmca_timer.a,mca/timer/linux/.libs/libmca_timer_linux.a 
> -Wl,--no-whole-archive /dev/null -ldl -lnsl -lutil -lm -lc -mt -mt -mt 
> -mt -mt -mt -mt -mt -mt -mt -mt -mt -mt -mt -mt -mt -mt -mt -mt -mt 
> -mt -mt -mt -mt -mt -mt -mt -Wl,-soname -Wl,libopen-pal.so.0 -o 
> .libs/libopen-pal.so.0.0.0
> /dev/null: file not recognized: File truncated


I believe the issue is the resultant /dev/null added at the end.  So I 
manually tried the following:


address@hidden:~/tmp/compissue>  cc -mt -c foo.c  -KPIC -DPIC -o foo.o 
address@hidden:~/tmp/compissue> ar cru libtest.a foo.o 
address@hidden:~/tmp/compissue> cc -G -Wl,--whole-archive,libtest.a 
-Wl,--no-whole-archive -lnsl -lutil -lm -lc -mt -Wl,-soname 
-Wl,libtest.so.0 -o libtest.so.0.0 /dev/null
/dev/null: file not recognized: File truncated

Same error as the above.  Now let's remove the /dev/null...

address@hidden:~/tmp/compissue> cc -G -Wl,--whole-archive,libtest.a 
-Wl,--no-whole-archive -lnsl -lutil -lm -lc -mt -Wl,-soname 
-Wl,libtest.so.0 -o libtest.so.0.0
usage: cc [ options] files.  Use 'cc -flags' for details

Oops, no input to compile (which is probably why /dev/null is used).  
Ok, let's now add a .o...

address@hidden:~/tmp/compissue> cc -mt -c bar.c  -KPIC -DPIC -o bar.o
address@hidden:~/tmp/compissue> cc -G -Wl,--whole-archive,libtest.a 
-Wl,--no-whole-archive -lnsl -lutil -lm -lc -mt -Wl,-soname 
-Wl,libtest.so.0 -o libtest.so.0.0 bar.o

And this works.  So I am not sure if this might be a compiler change for 
linux or what. 
So other than providing a dummy.c I am not sure what more libtool could 
do.  I will be
passing this by our compiler guys too to see if they think /dev/null was 
originally supported
and removed for some reason.

Note the following is my Sun CC version info:
cc: Sun C 5.9 Linux_i386 Build35_2 2006/12/04

--td