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www.humprog.org | ||
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jmmv.dev
In a recent work discussion, I came across an argument that didn't sound quite right. The claim was that we needed to set up containers in our developer machines in order to run tests against a modern glibc. The justifications were that using LD_LIBRARY_PATH to load a different glibc didn't work and statically linking glibc wasn't possible either. But... running a program against a version of glibc that's different from the one installed on the system seems like a pretty standard requirement, doesn't it?... |
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www.caichinger.com
Introduction ELF is the file format used for object files (.o's), binaries, shared libraries and core dumps in Linux. It's actually pretty simple and well thought-out. ELF has the same layout for all architectures, however endianness and word size can differ; relocation types, symbol types and the like may have platform-specific values, and of course the contained code is arch specific. An ELF file provides 2 views on the data it contains: A linking view and an execution view. Those two views can be accessed by two headers: the section header table and the program header table. Linking view: Section Header Table (SHT) The SHT gives an overview on the sections contained in the ELF file. Of particular interest are REL sections (relocations), SYMTAB/DYNSYM (sym... |
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nullprogram.com
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abstractexpr.com
Most programmers prefer to write code over debugging it. Unfortunately, code breaks a lot more often than we would like and it often breaks in situations that are hard to debug. Therefore, an essential skill as a programmer is to know how to debug your code (and that of others). When facing our first bug... |
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