* Implement <autoregister>

[reactos.git] / reactos / Makefile

diff --git a/reactos/Makefile b/reactos/Makefile
index b654ebf..8b80e5c 100644 (file)
--- a/reactos/Makefile
+++ b/reactos/Makefile
@@ -105,6 +105,22 @@
 #            -dm{module}  Check only automatic dependencies for this module.
 #            -mi          Let make handle creation of install directories. Rbuild will not generate the directories.
 #            -ps          Generate proxy makefiles in source tree instead of the output tree.
+#            -ud          Disable compilation units.
+
+# check for versions of make that don't have features we need...
+# the function "eval" is only available in 3.80+, which happens to be the minimum
+# version that has the features we use...
+# THIS CHECK IS BORROWED FROM THE "GMSL" PROJECT, AND IS COVERED BY THE GPL LICENSE
+# YOU CAN FIND OUT MORE ABOUT GMSL - A VERY COOL PROJECT - AT:
+# http://gmsl.sourceforge.net/
+
+__gmsl_have_eval :=
+__gmsl_ignore := $(eval __gmsl_have_eval := T)
+
+ifndef __gmsl_have_eval
+$(error ReactOS's makefiles use GNU Make 3.80+ features, you have $(MAKE_VERSION), you MUST UPGRADE in order to build ReactOS - Sorry)
+endif
+# END of code borrowed from GMSL ( http://gmsl.sourceforge.net/ )
 
 .PHONY: all
 .PHONY: clean