[Bug lto/41902] New: Compile error in gcc/lto/lto-elf.c (SHN_XINDEX undeclared)

[Bug lto/41902] New: Compile error in gcc/lto/lto-elf.c (SHN_XINDEX undeclared)

[bruck dot michael at googlemail dot com]

gcc -c  -g -O2 -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE  -W -Wall -Wwrite-strings
-Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wmissing-format-attribute
-pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings
-Wold-style-definition -Wc++-compat -fno-common  -DHAVE_CONFIG_H -I. -I.
-I../../../sources/gcc-4.5.x/gcc -I../../../sources/gcc-4.5.x/gcc/.
-I../../../sources/gcc-4.5.x/gcc/../include
-I../../../sources/gcc-4.5.x/gcc/../libcpp/include 
-I../../../sources/gcc-4.5.x/gcc/../libdecnumber
-I../../../sources/gcc-4.5.x/gcc/../libdecnumber/dpd -I../libdecnumber 
-DCLOOG_PPL_BACKEND  -I/cygdrive/c/arm-elf-cy/libelf-0.8.12/include
-I/cygdrive/c/arm-elf-cy/libelf-0.8.12/include/libelf 
../../../sources/gcc-4.5.x/gcc/c-lang.c -o c-lang.o
../../../sources/gcc-4.5.x/gcc/lto/lto-elf.c: In function 'lto_elf_file_close':
../../../sources/gcc-4.5.x/gcc/lto/lto-elf.c:630: error: 'SHN_XINDEX'
undeclared (first use in this function)
../../../sources/gcc-4.5.x/gcc/lto/lto-elf.c:630: error: (Each undeclared
identifier is reported only once
../../../sources/gcc-4.5.x/gcc/lto/lto-elf.c:630: error: for each function it
appears in.)
make[2]: *** [lto/lto-elf.o] Error 1

SHN_XINDEX seems to be internal to libelf

This is with svn rev 153796.


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           Summary: Compile error in gcc/lto/lto-elf.c (SHN_XINDEX
                    undeclared)
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bruck dot michael at googlemail dot com
 GCC build triplet: i686-pc-cygwin
  GCC host triplet: i686-pc-cygwin
GCC target triplet: arm-unknown-elf


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41902

[Bug lto/41902] Compile error in gcc/lto/lto-elf.c (SHN_XINDEX undeclared)

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2009-11-02 10:31 -------
Works for me with both recent libelf and elfutils.  The code didn't really
change recently, so what libelf do you have installed?


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41902

[Bug lto/41902] Compile error in gcc/lto/lto-elf.c (SHN_XINDEX undeclared)

[bruck dot michael at googlemail dot com]

------- Comment #2 from bruck dot michael at googlemail dot com  2009-11-02 11:47 -------
(In reply to comment #1)
> Works for me with both recent libelf and elfutils.  The code didn't really
> change recently, so what libelf do you have installed?
> 

libelf-0.8.12

I think I understand what is happening now.

libelf's configure finds a valid elf.h in /usr/include that was installed by
cygwin.
The sys_elf.h switch mechnism is then configured to include that file from
cygwin rather than the elf_repl.h provided by libelf. But cygwin's elf.h lacks
the SHN_XINDEX macro.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41902

[Bug lto/41902] Compile error in gcc/lto/lto-elf.c (SHN_XINDEX undeclared)

[bruck dot michael at googlemail dot com]

------- Comment #3 from bruck dot michael at googlemail dot com  2009-11-05 05:17 -------
libelf maintainer Michael Riepe writes me that one can force libelf to use its
own header using:

libelf_cv_elf_h_works=no ./configure ...

Maybe this info could be added to http://gcc.gnu.org/install/prerequisites.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41902

[Bug lto/41902] Compile error in gcc/lto/lto-elf.c (SHN_XINDEX undeclared)

[davek at gcc dot gnu dot org]

------- Comment #4 from davek at gcc dot gnu dot org  2009-12-21 05:11 -------
This problem will be resolved in the next few days when I release an official
cygwin distro package for libelf, which will have this issue fixed.  HTH :)


-- 

davek at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |davek at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41902

[Bug lto/41902] Compile error in gcc/lto/lto-elf.c (SHN_XINDEX undeclared)

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2010-04-23 15:39 -------
Not a gcc bug.


-- 

rguenth at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41902