🛠️ Refactor suggestion

Declare a defaultall target and mark all entry points as.PHONY.

Most build tools (incl.checkmake) expect a conventionalall target to act as the default entry-point and to be listed in the.PHONY declaration together with every recipe that does not create a file of the same name.
Recommend:

+.PHONY: all build install clean test++all: build+ build: @echo Building...  install:-echo Installing...+@echo Installing...

Adds:
• defaultall alias → CI/CD friendly
•.PHONY list covers every virtual target
• quiets static-analysis “minphony” warnings
• consistent silent-echo forinstall

In the Makefile at lines 1 to 5, add a default target named "all" that dependson the "build" target to serve as the conventional entry point. Also, declareall targets including "all", "build", and "install" as .PHONY to indicate theyare not files. Additionally, modify the "install" target to use silent echo(prefix with @) for consistency and to reduce noise during execution.