It's used at build time in 12 crates.

Depender (with downloads and own rev deps)			coin-build-tools version
	1	bonmin-src	build	^0.2
	2	ipopt-src	build	^0.2
	3	clp-src	build	^0.2
		coinclp-sys	build	^0.2
	4	coinutils-src	build	^0.2
	1	cgl-src	build	^0.2
		coincbc-sys	build	^0.2
	2	cbc-src	build	^0.2
	3	osi-src	build	^0.2
		coinipopt-sys	build	^0.2
	1	mumps-src	build	^0.2
		coinbonmin-sys	build	^0.2