From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <388325CC.20EC244@eng.uct.ac.za> Date: Mon, 17 Jan 2000 16:23:08 +0200 From: Grant Carter MIME-Version: 1.0 To: linuxppc-embedded Subject: Dynamic Linking Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hi I have been following the thread "Cross-compile Applications for 860 on x86" and am running into similar problems. I have tried the solutions that have been suggested but have had no success. Perhaps those concerned have had private email conversations in which the solution has been found, but since I cannot find one in the archives that helps me, I'll post this question. Apologies for its length. I am trying to get a hello world up and running using dynamically linked libraries. The statically linked version works fine, so I presume that the libraries are all fine. I am using linux-2.2.13 with no kernel floating point support, but all the libraries and executables are compiled with -msoft-float. I am using SASH-2.1 and it works fine. My problem is that whenever I run something that I have compiled with the dynamic linker, it exits on Signal 11. I have made sure that LD_LIBRARY_PATH is set to /lib (it seems that I had to do this even though all my libraries are in /lib as without it I get a ./hello: error in loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory Doing a "strings" on the file shows that it is looking in /lib for ld.so.1.) --------------------------------- >powerpc-linux-strings hello /lib/ld.so.1 __gmon_start__ libc.so.6 printf _IO_stdin_used __libc_start_main GLIBC_2.0 }a[xN Grant was here! ----------------------------------- Anyhow, once the LD_LIBRARY_PATH has been set, the libraries are loaded (or so it seems) Now everything that I run exits with Signal 11. I used objdump -p on the main executable and saw that it required libc.so.6. This exists in my /lib directory ----------------------------------- >powerpc-linux-objdump -p hello hello: file format elf32-powerpc Dynamic Section: NEEDED libc.so.6 INIT 0x100003c8 FINI 0x100003ec HASH 0x10000150 STRTAB 0x100001c8 SYMTAB 0x10000178 STRSZ 0x42 SYMENT 0x10 DEBUG 0x0 PLTGOT 0x100104f8 PLTRELSZ 0x18 PLTREL 0x7 JMPREL 0x10000240 RELA 0x10000240 RELASZ 0x18 RELAENT 0xc VERNEED 0x10000220 VERNEEDNUM 0x1 VERSYM 0x10000214 Version References: required from libc.so.6: 0x0d696910 0x00 02 GLIBC_2.0 ----------------------------------- Doing the same thing on libc.so.6, I get the following: ----------------------------------- >powerpc-linux-objdump -p libc.so.6 libc.so.6: file format elf32-powerpc Program Header: Dynamic Section: NEEDED ld.so.1 SONAME libc.so.6 INIT 0x21cb8 FINI 0xe0fc8 HASH 0xf4 STRTAB 0x9d0c SYMTAB 0x2cdc STRSZ 0x7ca2 SYMENT 0x10 PLTGOT 0x103a9c PLTRELSZ 0x150c PLTREL 0x7 JMPREL 0x204d8 RELA 0x128c4 RELASZ 0xf2dc RELAENT 0xc VERDEF 0x127e0 VERDEFNUM 0x5 VERNEED 0x12884 VERNEEDNUM 0x1 VERSYM 0x119da Version definitions: 1 0x01 0x0865f4e6 libc.so.6 2 0x00 0x0d696910 GLIBC_2.0 3 0x00 0x0d696911 GLIBC_2.1 GLIBC_2.0 4 0x00 0x09691f71 GLIBC_2.1.1 GLIBC_2.1 5 0x00 0x09691f72 GLIBC_2.1.2 GLIBC_2.1.1 Version References: required from ld.so.1: 0x09691f71 0x00 08 GLIBC_2.1.1 0x0d696911 0x00 07 GLIBC_2.1 0x0d696910 0x00 06 GLIBC_2.0 ----------------------------------- And now for ld.so.1 ----------------------------------- >powerpc-linux-objdump -p ld.so.1 ld.so.1: file format elf32-powerpc Program Header: Dynamic Section: SONAME ld.so.1 HASH 0x94 STRTAB 0x838 SYMTAB 0x2f8 STRSZ 0xcfc SYMENT 0x10 PLTGOT 0x25fd4 PLTRELSZ 0x12c PLTREL 0x7 JMPREL 0x2ab0 RELA 0x167c RELASZ 0x1560 RELAENT 0xc VERDEF 0x15fc VERDEFNUM 0x4 VERSYM 0x1554 Version definitions: 1 0x01 0x0275a261 ld.so.1 2 0x00 0x0d696910 GLIBC_2.0 3 0x00 0x0d696911 GLIBC_2.1 GLIBC_2.0 4 0x00 0x09691f71 GLIBC_2.1.1 GLIBC_2.1 ----------------------------------- So in summary, it seems that I have all of the required libraries (ld.so.1 and libc.so.6) in the right place (/lib) as pointed to my LD_LIBRARY_PATH and still I get a Signal 11 exit when trying to run it. Any ideas would be greatly appreciated. Regards Grant -- Grant Carter gcarter@eng.uct.ac.za Department of Electrical Engineering University of Cape Town Tel: +27 (0)21 650-3467 Fax: +27 (0)21 650-3465 "Coffee not found - operator halted!" ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/