Make up your mind is a way of saying, Imake a decision or pick something.
Make up your mind的意思的要“做决定”或者“选一个”。
英语百科
imake
imake is a build automation system written for the X Window System. It was used by X from X11R1 (1987) to X11R6.9 (2005), and continued to be used in XFree86 (last commit 2009). It is implemented on top of the C preprocessor and make. The first version was written by Todd Brunhoff at Tektronix.