Makefile changes for better behaviour with already patched kernels.

The Makefile now examine $(LINUX)/.config to see what modules need to be
compiled. It compiles only those modules which were either not configured
in at all, or were built as modules (ie. drivers which are built-in in the
kernel are not built, as they can not be overruled).

The above is still potentially dangerous, if we break the interface of
our modules. Still, it is much better than it was.
C


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@575 7894878c-1315-0410-8ee3-d5d059ff63e0

kernel/Module.mk

@@ -22,7 +22,10 @@ MODULE_DIR := kernel
 
 # Regrettably, even 'simply expanded variables' will not put their currently
 # defined value verbatim into the command-list of rules...
-KERNELTARGETS := $(MODULE_DIR)/sensors.o
+KERNELTARGETS := 
+ifneq ($(shell if grep -q '^CONFIG_SENSORS=y' $(LINUX)/.config; then echo 1; fi),1)
+KERNELTARGETS += $(MODULE_DIR)/sensors.o
+endif
 
 # Include all dependency files
 INCLUDEFILES += $(KERNELTARGETS:.o=.d)