[Bug bootstrap/42002] New: Bootstrap failure: ld doesn't find 64-bit libelf on Fedora 11

I configured today's mainline with

../../mainline/configure --prefix=/pkgs/gcc-mainline --enable-languages=c,c++
--enable-stage1-languages=c,c++ --with-cpu=default64 --enable-checking=release

and bootstrap fails with

/home/lucier/programs/gcc/objdirs/mainline/./prev-gcc/xgcc
-B/home/lucier/programs/gcc/objdirs/mainline/./prev-gcc/
-B/pkgs/gcc-mainline/powerpc64-unknown-linux-gnu/bin/
-B/pkgs/gcc-mainline/powerpc64-unknown-linux-gnu/bin/
-B/pkgs/gcc-mainline/powerpc64-unknown-linux-gnu/lib/ -isystem
/pkgs/gcc-mainline/powerpc64-unknown-linux-gnu/include -isystem
/pkgs/gcc-mainline/powerpc64-unknown-linux-gnu/sys-include     -g -O2 -gtoggle
-DIN_GCC   -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition
-Wc++-compat   -DHAVE_CONFIG_H  -o cc1-dummy c-lang.o stub-objc.o attribs.o
c-errors.o c-lex.o c-pragma.o c-decl.o c-typeck.o c-convert.o c-aux-info.o
c-common.o c-opts.o c-format.o c-semantics.o c-ppoutput.o c-cppbuiltin.o
c-objc-common.o c-dump.o c-pch.o c-parser.o rs6000-c.o c-gimplify.o
tree-mudflap.o c-pretty-print.o c-omp.o \
          dummy-checksum.o main.o  libbackend.a ../libcpp/libcpp.a
../libdecnumber/libdecnumber.a ../libcpp/libcpp.a   ../libiberty/libiberty.a
../libdecnumber/libdecnumber.a  
-L/home/lucier/programs/gcc/objdirs/mainline/./gmp/.libs
-L/home/lucier/programs/gcc/objdirs/mainline/./gmp/_libs
-L/home/lucier/programs/gcc/objdirs/mainline/./mpfr/.libs
-L/home/lucier/programs/gcc/objdirs/mainline/./mpfr/_libs -lmpfr -lgmp
-rdynamic -ldl  -L../zlib -lz -lelf
/usr/bin/ld: skipping incompatible /usr/lib/libelf.so when searching for -lelf
/usr/bin/ld: cannot find -lelf
collect2: ld returned 1 exit status

The object files are 64-bit:

[lucier@lambda-head mainline]$ file gcc/rs6000-c.o
gcc/rs6000-c.o: ELF 64-bit MSB relocatable, 64-bit PowerPC or cisco 7500,
version 1 (SYSV), not stripped

and a 64-bit libelf is installed:

[lucier@lambda-head mainline]$ file /usr/lib64/libelf*
/usr/lib64/libelf-0.142.so: ELF 64-bit MSB shared object, 64-bit PowerPC or
cisco 7500, version 1 (SYSV), dynamically linked, stripped
/usr/lib64/libelf.so.1:     symbolic link to `libelf-0.142.so'

but I don't know why it isn't being found.


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           Summary: Bootstrap failure: ld doesn't find 64-bit libelf on
                    Fedora 11
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: lucier at math dot purdue dot edu
 GCC build triplet: powerpc64-unknown-linux-gnu/
  GCC host triplet: powerpc64-unknown-linux-gnu
GCC target triplet: powerpc64-unknown-linux-gnu/


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42002

------- Comment #1 from jakub at gcc dot gnu dot org  2009-11-11 06:51 -------
The last command shows that while you have libelf installed, you don't have
libelf.so symlink for the 64-bit libelf.  So, you need to
yum install elfutils-libelf-devel.ppc64


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jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42002

------- Comment #2 from lucier at math dot purdue dot edu  2009-11-11 13:52 -------
Thanks a lot for the explanation!

I'm looking through the list of packages on Fedora with elfutils in the title;
there is no elfutils-libelf-devel.ppc64, but the only ppc64 packages I can find
are

elfutils-devel-0.142-1.fc11 (ppc64)

with file list

/usr/include/dwarf.h
/usr/include/elfutils
/usr/include/elfutils/elf-knowledge.h
/usr/include/elfutils/libasm.h
/usr/include/elfutils/libdw.h
/usr/include/elfutils/libdwfl.h
/usr/include/elfutils/libebl.h
/usr/include/elfutils/version.h
/usr/lib64/libasm.so
/usr/lib64/libdw.so
/usr/lib64/libebl.a

and

elfutils-libelf-0.142-1.fc11 (ppc64)

with file list

/usr/lib64/libelf-0.142.so
/usr/lib64/libelf.so.1

So I put in the link from libelf.so to libelf.so.1 by hand and the bootstrap is
proceeding.

Should I file a bug report with Fedora?  I was told Fedora 12 won't support
ppc64, so maybe there's no point.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42002

------- Comment #3 from jakub at gcc dot gnu dot org  2009-11-11 14:20 -------
Not sure where you searched,
http://download.fedora.redhat.com/pub/fedora/linux/updates/11/ppc/
certainly contains both
elfutils-libelf-devel-0.142-1.fc11.ppc.rpm
elfutils-libelf-devel-0.142-1.fc11.ppc64.rpm
and similarly Everything tree.  And F12 also supports ppc64.  This is all
distro specific and doesn't belong here though.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42002