> -----Original Message-----
> From: H.J. Lu [mailto:hjl.to...@gmail.com]
> Sent: Monday, July 22, 2013 5:08 PM
> To: Iyer, Balaji V
> Cc: Ian Lance Taylor; gcc@gcc.gnu.org
> Subject: Re: Help with using multilib for Cilk Library
>
> On Mon, Jul 22, 2013 at 9:27 AM, Iyer, Balaji V <balaji.v.i...@intel.com>
> wrote:
> >
> >
> >> -----Original Message-----
> >> From: H.J. Lu [mailto:hjl.to...@gmail.com]
> >> Sent: Friday, July 19, 2013 6:56 PM
> >> To: Iyer, Balaji V
> >> Cc: Ian Lance Taylor; gcc@gcc.gnu.org
> >> Subject: Re: Help with using multilib for Cilk Library
> >>
> >> On Fri, Jul 19, 2013 at 3:53 PM, Iyer, Balaji V <balaji.v.i...@intel.com>
> >> wrote:
> >> >
> >> >
> >> >> -----Original Message-----
> >> >> From: Ian Lance Taylor [mailto:i...@google.com]
> >> >> Sent: Friday, July 19, 2013 6:26 PM
> >> >> To: Iyer, Balaji V
> >> >> Cc: gcc@gcc.gnu.org
> >> >> Subject: Re: Help with using multilib for Cilk Library
> >> >>
> >> >> On Fri, Jul 19, 2013 at 11:22 AM, Iyer, Balaji V
> >> >> <balaji.v.i...@intel.com>
> >> wrote:
> >> >> > Hello Everyone,
> >> >> > I am trying to use Multilib on Cilk Library. I looked at
> >> >> > this website
> >> >> (http://www.airs.com/ian/configure/configure_8.html) and used
> >> >> libsanitizer and libgo as samples to model after. It is currently
> >> >> failing with the following error
> >> >> message:
> >> >> >
> >> >> > libtool: link: /export/users/my-files/b-gcc-multilib/./gcc/xg++
> >> >> > -
> >> >> B/export/users/my-files/b-gcc-multilib/./gcc/ -nostdinc++
> >> >> -nostdinc++
> >> >> -
> >> >> I/export/users/my-files/b-gcc-multilib/x86_64-unknown-linux-gnu/32
> >> >> /li
> >> >> bstdc++- v3/include/x86_64-unknown-linux-gnu
> >> >> -I/export/users/my-files/b-gcc-
> >> >> multilib/x86_64-unknown-linux-gnu/32/libstdc++-v3/include -
> >> >> I/export/users/my-files/gcc/libstdc++-v3/libsupc++
> >> >> -I/export/users/my- files/gcc/libstdc++-v3/include/backward
> >> >> -I/export/users/my-files/gcc/libstdc++-
> >> >> v3/testsuite/util
> >> >> -L/export/users/my-files/b-gcc-multilib/x86_64-unknown-linux-
> >> >> gnu/32/libstdc++-v3/src
> >> >> -L/export/users/my-files/b-gcc-multilib/x86_64-
> >> >> unknown-linux-gnu/32/libstdc++-v3/src/.libs
> >> >> -B/export/users/my-files/install-
> >> >> gcc-multilib/x86_64-unknown-linux-gnu/bin/
> >> >> -B/export/users/my-files/install-
> >> >> gcc-multilib/x86_64-unknown-linux-gnu/lib/ -isystem
> >> >> /export/users/my-
> >> >> files/install-gcc-multilib/x86_64-unknown-linux-gnu/include
> >> >> -isystem
> >> >> /export/users/my-files/install-gcc-multilib/x86_64-unknown-linux-g
> >> >> nu/
> >> >> sys- include -m32 -shared -nostdlib /usr/lib/../lib/crti.o
> >> >> /export/users/my-files/b- gcc-multilib/./gcc/32/crtbeginS.o
> >> >> .libs/bug.o .libs/cilk-abi.o .libs/cilk-abi-cilk- for.o
> >> >> .libs/cilk-abi-vla.o .libs/cilk-abi-vla-internal.o
> >> >> .libs/cilk_api.o .libs/cilk_fiber.o .libs/cilk_fiber-unix.o
> >> >> .libs/cilk_malloc.o .libs/c_reducers.o .libs/except-gcc.o
> >> >> .libs/frame_malloc.o .libs/full_frame.o .libs/global_state.o
> >> >> .libs/jmpbuf.o .libs/local_state.o .libs/metacall_impl.o
> >> >> .libs/os_mutex-unix.o .libs/os-unix.o .libs/pedigrees.o
> >> >> .libs/record-replay.o .libs/reducer_impl.o
> >> .libs/scheduler.o .libs/signal_node.o .libs/spin_mutex.o
> >> .libs/stats.o
> >> >> .libs/symbol_test.o .libs/sysdep-unix.o .libs/worker_mutex.o
> >> >> -Wl,-rpath -
> >> >> Wl,/export/users/my-files/b-gcc-multilib/x86_64-unknown-linux-gnu/
> >> >> lib
> >> >> stdc++- v3/src/.libs -Wl,-rpath
> >> >> -Wl,/export/users/my-files/install-gcc-multilib/lib/../lib64
> >> >> -L/export/users/my-files/b-gcc-multilib/x86_64-unknown-linux-gnu/l
> >> >> ibs
> >> >> tdc++- v3/src/.libs
> >> >> -L/export/users/my-files/b-gcc-multilib/x86_64-unknown-linux-
> >> >> gnu/libstdc++-v3/src -lpthread -ldl
> >> >> -L/export/users/my-files/b-gcc-
> >> >> multilib/x86_64-unknown-linux-gnu/32/libstdc++-v3/src
> >> >> -L/export/users/my-
> >> >> files/b-gcc-multilib/x86_64-unknown-linux-gnu/32/libstdc++-v3/src/
> >> >> .li
> >> >> bs -
> >> >> L/export/users/my-files/b-gcc-multilib/./gcc/32 -L/lib/../lib
> >> >> -L/usr/lib/../lib - L/export/users/my-files/b-gcc-multilib/./gcc
> >> >> /export/users/my-files/b-gcc-
> >> >> multilib/x86_64-unknown-linux-gnu/libstdc++-v3/src/.libs/libstdc++
> >> >> .so -lm -lc
> >> - lgcc_s /export/users/my-files/b-gcc-multilib/./gcc/32/crtendS.o
> >> >> /usr/lib/../lib/crtn.o -m32 -m32 -Wl,-soname -Wl,libcilkrts.so.5 -o
> >> >> .libs/libcilkrts.so.5.0.3511
> >> >> > /export/users/my-files/b-gcc-multilib/x86_64-unknown-linux-gnu/l
> >> >> > ibs
> >> >> > tdc
> >> >> > ++-v3/src/.libs/libstdc++.so: could not read symbols: File in
> >> >> > ++wrong
> >> >> > format
> >> >> > collect2: error: ld returned 1 exit status
> >> >> > make[4]: *** [libcilkrts.la] Error 1
> >> >> > make[4]: Leaving directory
> >> >> > `/export/users/my-files/b-gcc-multilib/x86_64-
> >> >> unknown-linux-gnu/32/libcilkrts'
> >> >> > make[3]: *** [multi-do] Error 1
> >> >> > make[3]: Leaving directory `/export/users/my-files/b-gcc
> >> >> >
> >> >> >
> >> >> > From what it looks like, it is reading the 64 bit library for
> >> >> > the
> >> >> > 32 bit mode (or
> >> >> vice-versa). How do I fix this? I am also attaching my
> >> >> configure.ac and Makefile.am. Please note that it is not fully
> >> >> cleaned up (e.g. I have stuff commented out etc). Can someone
> >> >> please tell me what I am doing
> >> wrong?
> >> >>
> >> >> When building the 32bit libcillkrts you are linking against the
> >> >> 64-bit
> >> >> libstdc++. It's right there on your command line:
> >> >> /export/users/my-files/b-gcc-multilib/x86_64-unknown-linux-gnu/lib
> >> >> std
> >> >> c++-
> >> >> v3/src/.libs/libstdc++.so.
> >> >> If that argument is needed at all, it needs to be
> >> >> /export/users/my-files/b-gcc-
> >> >> multilib/x86_64-unknown-linux-gnu/32/libstdc++-v3/src/.libs/libstd
> >> >> c++ .so (note added /32 in there). I guess the question is where
> >> >> the argument is coming from. I must admit that I don't know. Is
> >> >> it in some environment variable?
> >> >
> >> > I am not setting any environment variable that weren't set
> >> > automatically in my
> >> SUSE machine. Also, all the other libs are working correctly for 32 and 64
> >> bit.
> >> >
> >>
> >> If you can create a git branch, others can take a look to see what is
> >> going on.
> >> There isn't sufficient info to tell.
> >
> > Hello H. J. and Ian,
> > I have posted what I have in bviyer/cilkplus-multilib-test. To
> > build the
> compiler, I used the following configure command:
> >
> > ../cilkplus-multilib-test/configure --prefix=<INSTALL_DIR>
> >
> > Any help is greatly appreciated!
> >
> > Thanks,
> >
> > Balaji V. Iyer.
>
> Here is a patch:
>
> 1. Add target dependency on C++ for parallel build.
> 2. Remove hardcoded -O3 -fpic. libtool takes care of it.
> 3. Work around MAKEFLAGS for multilib build.
>
Hi H.J.,
Thank you! This patch got rid of all the errors for me. When I do make
install, it is installing both the 32 bit one and 64 bit one in
$INSTALL_DIR/lib. How can I make the 32 bit one write to $INSTALL_DIR/lib and
the 64-bit one write to $INSTALL_DIR/lib64?
Thanks,
Balaji V. Iyer.
>
> --
> H.J.
