Update build scripts to be compatible with strip.py wrapper · phoenix-rtos/phoenix-rtos-ports@b659aa2

ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]

ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]

ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]

ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Wunused-result]

ignoring return value of 'pipe' declared with attribute 'warn_unused_result' [-Wunused-result]

ignoring return value of 'write' declared with attribute 'warn_unused_result' [-Wunused-result]

format not a string literal and no format arguments [-Wformat-security]

#warning "poweroff unsupported, using halt as fallback" [-Wcpp]

variable 'from_getty' set but not used [-Wunused-but-set-variable]

variable 'opts' set but not used [-Wunused-but-set-variable]

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