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<Compiler> + other closely related crap like <linker (computing)>.


Compiler toolchain

Spin like mad between:
* standards
* high level generators. We use the <assembler (computing)> `as` and <linker (computing)> `ld`.
* hexdumps
* file decompilers. We use `readelf`. It makes it faster to read the ELF file by turning it into human readable output. But you must have seen one byte-by-byte example first, and think how `readelf` output maps to the standard.
* low-level generators: stand-alone libraries that let you control every field of the ELF files you generated. https://github.com/BR903/ELFkickers, https://github.com/sqall01/ZwoELF and many more on GitHub.
* consumer: the `exec` system call of the Linux kernel can parse ELF files to starts processes: https://github.com/torvalds/linux/blob/v4.11/fs/binfmt_elf.c, https://stackoverflow.com/questions/8352535/how-does-kernel-get-an-executable-binary-file-running-under-linux/31394861#31394861


How to learn

ELF Hello World Tutorial <span class="meta">/</span> How to learn

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= Linker
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Some <linker (computing)> related answers by <Ciro Santilli>:
* https://stackoverflow.com/questions/3322911/what-do-linkers-do/33690144#33690144[How do linkers and address relocation work?]
* https://stackoverflow.com/questions/29391965/what-is-partial-linking-in-gnu-linker/53959624#53959624[What is incremental linking or partial linking?]
* https://stackoverflow.com/questions/3476093/replacing-ld-with-gold-any-experience/53921263#53921263[GOLD (`-fuse-ld=gold`) linker vs the traditional GNU ld and LLVM ldd]
* https://stackoverflow.com/questions/2463150/what-is-the-fpie-option-for-position-independent-executables-in-gcc-and-ld/51308031#51308031[What is the -fPIE option for position-independent executables in GCC and ld?]


Ciro Santilli @cirosantilli 37

 Incoming links: Linker (computing)