Back to GCC

[djensenius]

This pull request updates the installation scripts to use gcc as the C compiler for all Cargo package installations instead of clang. Additionally, it adjusts the set of essential APT packages to include build-essential and removes redundant installations. These changes improve compatibility and standardize the build environment across both the main and parallel installation scripts.

Compiler standardization for Cargo installations:

• All cargo install commands in both install.sh and scripts/parallel-install.sh now use CC=gcc instead of CC=clang for building Rust packages, ensuring consistent compilation and avoiding issues on systems where clang is not available. [1] [2] [3] [4] [5] [6] [7]

APT package installation adjustments:

• The list of essential APT packages in install.sh has been modified to include build-essential (which provides gcc and other core build tools) and remove the explicit installation of clang, aligning the system dependencies with the new compiler choice.