What does "symbol value" from nm command mean?
Dec 7, 2009 · When you list the symbol table of a static library, like nm mylib.a, what does the 8 digit hex that show up next to each symbol mean? Is that the relative location of each symbol in the code? Also, can multiple symbols have the same symbol value? Is there something wrong with a bunchof different symbols all having the symbol value of 00000000?
nm symbol output t vs T in a shared so library - Stack Overflow
May 30, 2016 · When I checked with nm. nm ../libfuse.so | grep inval 00000000000154ed T fuse_invalidate **000000000001e142 t fuse_lowlevel_notify_inval_directory** 000000000001e26c T fuse_lowlevel_notify_inval_entry 000000000001e1cb T fuse_lowlevel_notify_inval_inode T/t means the symbol is present in text section. if uppercase, the symbol is global (external).
c++ - nm: "U" The symbol is undefined - Stack Overflow
When I nm on one of my libs: nm libmylib.so . I get a line like this. U _ZNSs4_Rep20_S_empty_rep_storageE@@GLIBCXX_3.4 I checked the man page for nm and I got "U" The symbol is undefined. What does an undefined symbol really mean? If it is really undefined, then why does nm report it at all?
c++ - How do I list the symbols in a .so file - Stack Overflow
Jan 10, 2019 · The standard tool for listing symbols is nm, you can use it simply like this: nm -gD yourLib.so If you want to see symbols of a C++ library, add the "-C" option which demangle the symbols (it's far more readable demangled). nm -gDC yourLib.so If your .so file is in elf format, you have two options: Either objdump (-C is also useful for ...
linux - When to use --dynamic option in nm - Stack Overflow
Nov 16, 2020 · It could very well possible that if your symbol is not exported from your shared library, it would end up in the normal symbol table instead of the dynamic symbol table. There are many types of symbols in ELF files. symbols part of the Normal Symbol table. This is the output from mere nm libabc.so or objdump --syms libabc.so. These symbols are ...
nm symbol both "U" and "T", what does that mean?
This symbol changed from a variable to a function between the two versions. So at compile time the build knows it wants a function, but during linking the variable version gets built into my library. – Ben Farmer
Microsoft equivalent of the nm command - Stack Overflow
So what is the Microsoft equivalent to nm, i.e., what command will list the symbols exported by a .lib file, the undefined symbols in the .lib, and so forth? For the curious, a sample nm man page is here.
linux - nm reports symbol is defined but ldd reports symbol is ...
Aug 30, 2013 · You are quite mistaken: the runtime loader will happily resolve undefined symbol from a shared libary with a symbol from the main executable, provided that symbol is "exported" in its dynamic table (which happens e.g. when the executable is linked with -rdynamic).
gcc - Why nm libc.so reports no symbols? - Stack Overflow
Jan 5, 2019 · By default, nm reads the .symtab section in ELF objects, which is optional in non-relocatable objects. With the -D/--dynamic option, you can instruct nm to read the dynamic symbol table (which are the symbols actually used at run time).
Offset in nm symbol value? - Stack Overflow
May 3, 2012 · Thanks, of course I forgot about linkage! Using the extern keyword the string now appears in the symbol table and the address I get from nm actually matches the location of the sting, It works now. I am able to get the string by seeking to the address I get from nm! –