Is it possible to make gdb automatically find the corresponding executable file? I have extracted the debug symbols and put them in the /usr/lib/debug/.build-id/ directory. When I start gdb with gdb /usr/bin/executable core everything is working fine. All debug symbols for the executable and all shared libraries are automatically loaded because gdb knows about the build-id and automatically loads it.
$ gdb /usr/bin/executable core
GNU gdb (GDB) 7.0.1-debian
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Reading symbols from /usr/bin/executable...Reading symbols from /usr/lib/debug/.build-id/b7/fada8ba917de74a6055647f3ac205dee1615c8.debug...done.
However, when I just start gdb and load the core file, no debug symbols are loaded.
(gdb) core-file core
[New Thread 10822]
[New Thread 10812]
Core was generated by `/usr/bin/executable'.
Program terminated with signal 6, Aborted.
#0 0xb7790424 in __kernel_vsyscall ()
Running gdb with strace shows that it doesn't even try to find them. The core file includes the build-id, so I guess gdb should be able to find it...
$ eu-unstrip -n --core core
0x8048000+0x25d000 b7fada8ba917de74a6055647f3ac205dee1615c8@0x8048178 - - [exe]
0xb7790000+0x1000 da7bd9bbfe599f7e9b644d684db983c4b34d8f31@0xb77901ec . - linux-gate.so.1
0xb7771000+0x19000 242ae1f2965ed161f3715858d7792019963b57fd@0xb7771164 /lib/i686/cmov/libpthread.so.0 - libpthread.so.0
0xb7768000+0x9000 06a49519b1ede0f79596e4b0cd07d2beba43b2dc@0xb7768164 /lib/i686/cmov/librt.so.1 - librt.so.1
0xb7672000+0xf5000 9daf5aac9ccc9281f2805639c3f87731beae5548@0xb7672144 /usr/lib/libstdc++.so.6 - libstdc++.so.6
0xb764c000+0x26000 696d5fb148fe51609203903d470a8f85d458cd17@0xb764c164 /lib/i686/cmov/libm.so.6 - libm.so.6
0xb762e000+0x1e000 d2a7edbd5dafabb7bb90198eeb58013342c589f0@0xb762e104 /lib/libgcc_s.so.1 - libgcc_s.so.1
0xb74e7000+0x147000 2124040143ac9f7478cc16b474b1cfdfe2c45353@0xb74e7184 /lib/i686/cmov/libc.so.6 - libc.so.6
0xb7791000+0x1d000 5a6fc3cf12f68887cbf22da3a9785d00f7d91c41@0xb7791124 /lib/ld-linux.so.2 - ld-linux.so.2
Is there a way to make gdb look for the debug files of the executable without providing the executable that caused the core dump?