GCC equivalent of PDBs

I have a program that I intend to distribute to end users, and would like to have receive crash reports from them. If I were using MSVC, I would generate minidumps and have those sent to me, and then inspect them with the corresponding PDB to get a useful stack trace, at the very least.

What is the equivalent of doing this with GCC? I can generate a stack trace, but if I want this to be useful, it requires having debug symbols compiled into the executable (with -g). Obviously this is unacceptable for release distribution, since the executable can bal开发者_JAVA百科loon in size quite a bit.

I googled a bit and found references to objcopy being able to separate out debug symbols to a separate file, but that page implied I would still need to have the debug symbols available alongside the release executable, which again is obviously unacceptable.

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Well the idea is that you compile with -g to add debug symbols but not slow the program down, ie. most programs will do -g -O2 then you can seperate debug symbols with objdump. After that you can strip your release build so it won't have any debug symbols.

Update: Recent gdb supports separate debug files, see https://sourceware.org/gdb/onlinedocs/gdb/Separate-Debug-Files.html

For example you can doo

objcopy --only-keep-debug prog prog.debug
strip prog

Now your prog won't have any debug symbols. But you can use proc.debug file to debug it in gdb.

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I couldn't find an exact answer to this, but I found an alternate solution that works just as well: Compile with optimization and other release flags alongside -g, store the resulting executable somewhere, then remove debug symbols using strip. Ship the stripped executable, and when you get a stack trace, use addr2line in combination with the original, unstripped executable, and you should get all the symbols back.