[GOIL] fix a bug in build.py generation for libraries in target hiera… #37

Job	Run time
Build Goil compiler	1m 27s
Build Cortex-M Arduino Due examples (blink)	1m 8s
Build AVR Arduino Mega 2560 examples (blink)	28s
Build AVR Arduino Uno examples (blink)	24s
Build AVR Arduino Mega 2560 examples (extInterrupt)	18s
Build Cortex-M Arduino M0 examples (blink)	38s
Build AVR Arduino Uno examples (customCounterExample)	27s
Build AVR Arduino Mega 2560 examples (serial)	24s
Build AVR Arduino Uno examples (extInterrupt)	23s
Build Cortex-M SmartFusion2 examples (blink)	37s
Build AVR Arduino Uno examples (serial)	20s
Build Cortex-M Nucleo-F303 examples (blink)	1m 44s
Build AVR Arduino Uno examples (trace)	18s
Build Cortex-M Nucleo-F303 examples (serial)	1m 7s
Build Cortex-M Nucleo-F432 examples (blink)	50s
Build Cortex-M STM32F4DISCOVERY examples (blink)	1m 3s
Build Cortex-M Nucleo-F432 examples (readbutton)	46s
Build Cortex-M STM32F4DISCOVERY examples (readbutton)	47s
Build Cortex-M Nucleo-F432 examples (serial)	48s
Build Cortex-M Xplained Pro examples (blink)	47s
Build Cortex-M STM32F4DISCOVERY examples (testDisableEnable)	38s
Build POSIX examples (can_demo)	4s
Build Cortex-M Xplained Pro examples (readbutton)	54s
Build POSIX examples (events)	8s
Build Cortex-M Xplained Pro examples (readbutton_isr)	58s
Build Raspberry Pi examples (blink)	59s
Build POSIX examples (ioc)	15s
Build POSIX examples (isr)	13s
Build POSIX examples (messages)	7s
Build POSIX examples (one_task)	9s
Build POSIX examples (periodic)	7s
Build POSIX examples (trace_test)	6s
	19m 22s

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