X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=mk%2Ftarget.mk;h=6a0b5aa8a8eaaeab46085d14b4c45dc6adc77682;hb=693550d93040439ac20d7ab3bfcaee8ca5b7e923;hp=73ef01fca63acae79227ca45da703dec0afeab83;hpb=5c367e131170d29524e278863515d88e5d63517a;p=ghc-hetmet.git

diff --git a/mk/target.mk b/mk/target.mk
index 73ef01f..6a0b5aa 100644
--- a/mk/target.mk
+++ b/mk/target.mk
@@ -1034,6 +1034,11 @@ maintainer-clean:: extraclean
 # Expects:	$(WAYS)			the possible "way" strings to one of 
 #					which $(way) will be set
 
+ifneq "$(way)" ""
+ifeq "$(findstring $(way), $(WAYS))" ""
+$(error Unknown way $(way))
+endif
+endif
 
 # So how does $(way) ever get set to anything?  Answer, we recursively
 # invoke make, setting $(way) on the command line.
@@ -1163,7 +1168,7 @@ endif
 # the --no-print-directory flag which is passed to recursive
 # invocations of make.
 #
-#ifeq "$(way)" ""
+ifeq "$(way)" ""
 ifneq "$(SUBDIRS)" ""
 
 # we override the 'boot', 'all' and 'install' targets in the top
@@ -1210,7 +1215,7 @@ $(ALL_TARGET) docs runtests $(BOOT_TARGET) TAGS clean distclean mostlyclean main
 	@echo "------------------------------------------------------------------------"
 
 endif
-#endif
+endif
 
 #
 # Selectively building subdirectories.