relocation

I am trying to build a C++ program in Eclipse that uses a library xerces-c-3.1.1-x86_64-linux-gcc-3.4 (binary). I see the below errors ... relocation truncated to fit: R_X86_64_PC32 against undefined symbol xercesc_3_1::AbstractDOMParser::adoptDocument() undefined reference to xercesc_3_1::AbstractDOMParser::adoptDocument() Gone through a link on stackoverflow ( What does this GCC error "... relocation truncated to fit..." mean? ) and understood what type of error is this but did not get a solution on how to resolve it. Environment I am using: Cygwin64 on Windows8.1 and Eclipse configured to

In the man page of nm . It says “A” The symbol's value is absolute, and will not be changed by further linking. However, I don't know what that means. How can I define a variable or something else to make its value absolute in C ? If I declare a variable in test.c in its file scope int a; Then in the output of nm , the entry for a will be the following on my machine 0000000000000004 C a So I'm wondering what can I do to make the nm output “A” for a variable. And I don't know what “absolute” means. When C compiler compiles your program, it produces a list of symbols in addition to the binary

I've noticed that using -r to do a partial link doesn't actually resolve any relocations, it seems, even if they could be resolved via relative addressing. For example, consider f.o and g.o , with f.o containing f() which calls g() within g.o . Before linking, the disassembly and relocations are as expected. After partial linking to a new file h.o (via ld -r -o h.o f.o g.o ), however, there is still a relocation for the call to g() , even though in theory it could have been resolved with a relative address. Here is the disassembly of h.o ( objdump -d h.o ), containing f() and g() . You can see

I just used objdump -x ... to check the sections of a PE file. There's about 90,000 lines of reloc entries: reloc 92 offset bc0 [524bc0] HIGHLOW reloc 93 offset bc4 [524bc4] HIGHLOW .... Does it hold true that the majority space of most PE files are composed of the reloc entries like above? What are those entries for? UPDATE Anyone can explain how the relocation entries work like above? Relocations are needed when there is a base conflict in the memory. If a dynamic-link-library wants to load its code section in a certain memory space but when it has already been accupied by another module, it

I noticed a GNU asm relocation syntax for ARM 64-bit assembly. What are those pieces like #:abs_g0_nc: and :pg_hi21: ? Where are they explained? Is there a pattern to them or are they made up on the go? Where can I learn more? Introduction ELF64 defines two types of relocation entries, called REL and RELA : typedef struct { Elf64_Addr r_offset; /* Address of reference */ Elf64_Xword r_info; /* Symbol index and type of relocation */ } Elf64_Rel; typedef struct { Elf64_Addr r_offset; /* Address of reference */ Elf64_Xword r_info; /* Symbol index and type of relocation */ Elf64_Sxword r_addend; /

I'm trying to move a working copy folder from it's old dedicated svn server, to a new svn server where it is contained within a sub-folder. Using the following relocate command: svn switch --relocate https://oldserver/svn/repos https://newserver/some/directory I get: svn: 'https://newserver/some/directory ' is not the root of the repository Which is correct ..... but, err, how do I move the location regardless? Eli Acherkan As far as I understand, you can't use svn switch (with or without --relocate ) to move to a new repository. Think about it this way: your new repository's HEAD revision is

As far as I know, x86 assembly code is very much constrained by the limited amount of registers. When I learnt that on Linux, to create a .so file, one has to specify the -fPIC command line argument to gcc in order to create position independent code, I couldn't believe it first. As far as I know, the elf file format supports relocations, just like the - in my eyes much better - Windows DLL system works: On Windows the linker relocates all the offsets in the DLLs, if this is necessary. I think that the time needed to load a SO-file or DLL-file, and also the amount of memory used to keep