Geeze, we still use bmake.

src/build/Common.bmake

@@ -25,6 +25,7 @@
 #  OBJODIR			- Object output dir										#
 #  LIBODIR			- Library output dir									#
 #  EXEODIR			- Executable output dir									#
+#  SRCODIR			- Sourc output dir										#
 #  DEBUG			- Set for debug builds									#
 #  RELEASE			- Set for release builds								#
 #					  One of DEBUG or RELEASE is always set!				#
@@ -164,6 +165,7 @@ OBJODIR =	$(CCPRE).win32.obj.$(BUILDPATH)
 MTOBJODIR =	$(CCPRE).win32.obj.$(BUILDPATH)_mt
 LIBODIR =	$(CCPRE).win32.lib.$(BUILDPATH)
 EXEODIR =	$(CCPRE).win32.exe.$(BUILDPATH)
+SRCODIR =	$(CCPRE).win32.src.$(BUILDPATH)
 
 # Paths
 XPDEV_SRC	=	$(SRC_ROOT)$(DIRSEP)xpdev