GOTCHA

Gotcha is a library that wraps functions. Tools can use gotcha to install hooks into other libraries, for example putting a wrapper function around libc's malloc. It is similar to LD_PRELOAD, but operates via a programmable API. This enables easy methods of accomplishing tasks like code instrumentation or wholesale replacement of mechanisms in programs without disrupting their source code.

homepage: https://gotcha.readthedocs.io/en/latest/

Available installations

GOTCHA version	Supported CPU targets	Supported GPU targets	EESSI version	Module
1.0.8	generic: aarch64, x86_64 Arm: a64fx, neoverse_n1, neoverse_v1, nvidia/grace AMD: zen2, zen3, zen4 Intel: haswell, skylake_avx512, sapphirerapids, icelake, cascadelake	(none)	2025.06	GOTCHA/1.0.8-GCCcore-14.2.0