Building Embedded Systems by Changyi Gu

Author:Changyi Gu
Language: eng
Format: epub
Publisher: Apress, Berkeley, CA

Each shell command that is invoked by the Make utility will be echoed onscreen. You can put an @ sign in front of that command to disable the auto-echo.

The Make utility will quit if the shell command returns a non-zero value. You can put a - sign in front of that command to let the Make utility ignore the error and move on2.

You can use $@ and $< to refer to targets and prerequisites, respectively.

targets : prerequisites

shell commands ...

Example

%.o : %.c

-@echo "===> Building $@"

@$(CC) $(CFLAGS) -c -o $@ $<

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