src/commonlib/Makefile.inc - coreboot - Gitiles

 bootblock-y += mem_pool.c
 verstage-y += mem_pool.c
 romstage-y += mem_pool.c
 ramstage-y += mem_pool.c

 bootblock-y += region.c
 verstage-y += region.c
 romstage-y += region.c
 ramstage-y += region.c
 smm-y += region.c
	bootblock-y += mem_pool.c
	verstage-y += mem_pool.c
	romstage-y += mem_pool.c
	ramstage-y += mem_pool.c

	bootblock-y += region.c
	verstage-y += region.c
	romstage-y += region.c
	ramstage-y += region.c
	smm-y += region.c