How do I use conditional statements in a Makefile?

How do I use conditional statements in a Makefile?

You can use conditional statements in a Makefile to control the flow of the build process based on certain conditions. For example, you can check if a variable is defined or if a file exists.

Can you give me an example of a conditional statement?

Sure! Here's a simple example:

ifeq ($(VAR),value)
    TARGET = target1
else
    TARGET = target2
endif

This checks if the variable VAR is equal to value and sets TARGET accordingly.

What are the common conditions I can check in a Makefile?

Common conditions include checking if a variable is defined, comparing variable values, and checking for the existence of files or directories.

Can I nest conditional statements?

Yes, you can nest conditional statements in Makefiles. Just ensure that the syntax is correct to avoid confusion.