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At first I warn that I/m not programmer, but administrator only I try to understand some actions

When I installed program made by Oracle, I got log message:

/usr/bin/make -f ins_precomp.mk relink ORACLE_HOME=/u01/oracle/OraHome_1 EXENAME=proc/Linking /u01/oracle/OraHome_1/precomp/lib/proc
libgcc_s.so: undefined reference to__stack_chk_fail@GLIBC_2.4'`

ls -l
../libgcc_s.so -> /lib/libgcc_s.so.1

so next I tried to diagnose by:

objdump -T /lib/libgcc_s.so.1 | grep __stack_chk_fail
00000000 DF *UND* 00000000 GLIBC_2.4 __stack_chk_fail

and

ldd /lib/libgcc_s.so.1.ORG
linux-gate.so.1 => (0x00fc5000)
libc.so.6 => /lib/libc.so.6 (0x00110000)
/lib/ld-linux.so.2 (0x00b39000)

and

objdump -T /lib/libc.so.6 |grep __stack_chk_fail
00c52f80 g DF .text 0000001a GLIBC_2.4 __stack_chk_fail

1) I don't know why this problem occured if all symbols are inside shared libraries (mabye it isn't, please correct me, or how to check it)

when I put older library libgcc_s.so.1 without symbol __stack_chk_fail

objdump -T /lib/libgcc_s.so.1 |grep __stack_chk_fail
empty output

everything was ok

2) Do linker not check reference to __stack_chk_fail, because there isn't inside libgcc_s.so.1 in that case?

martin
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2 Answers2

4

The problem is:

libgcc_s.so is having the dependency on libc.so.6. This problem starts with glibc 2.4 version.

You should add -lc in the link line.

This question will give you more information. In Linux stubs are used for standard libraries. Why are stubs required?

Community
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sunmoon
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  • Much better answer than mine! +1 – Conrad Meyer Feb 23 '11 at 12:33
  • so where I should add -lc at the beginning or the end? – martin Feb 23 '11 at 13:39
  • Add lc after lgcc_s in the link line. – sunmoon Feb 23 '11 at 16:48
  • I'm affraid that due to reason that installation scripts from Oracle are very complex, I don't know in which one I should put lc. I tried set LD_PRELOAD but it's not possible due to security, next i set LD_LIBRARY_PATH to /lib but it's not working. So I don't understand if linker can find libgcc_so.1 from /lib path why it can't find glibc inside the same directory? – martin Feb 25 '11 at 08:27
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The *UND* in 00000000 DF *UND* 00000000 GLIBC_2.4 __stack_chk_fail indicates that the section is referenced but not defined. So yes, you're missing the symbol.

Conrad Meyer
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  • could you explain where It should be defined because when execute on failed so: objdump -T /lib/libgcc_s.so.1 |grep UND, I obtain much more, like: 00000000 DF *UND* 00000000 GLIBC_2.0 realloc – martin Feb 23 '11 at 13:14
  • of course symbol __stack_chk_fail is undefined in libgcc_so.1 but it's defined inside libc.so.6 so I don't understand why the warning occur – martin Feb 24 '11 at 21:50