X-Git-Url: https://git.sur5r.net/?p=groeck-it87;a=blobdiff_plain;f=Makefile;h=1b88e2a01ce096f7a5e697b9cc51f297ac5c0150;hp=d4b96c3b26400d777a761a72fe20fe05c30cf2d0;hb=1d68bab74cfe2323042571662496d89608e7ee79;hpb=3fde481373cebaf4d2dd03441e909b7ee880dca6

diff --git a/Makefile b/Makefile
index d4b96c3..1b88e2a 100644
--- a/Makefile
+++ b/Makefile
@@ -44,10 +44,14 @@ all: modules
 
 # Targets for running make directly in the external module directory:
 
-EXTRA_CFLAGS=-DIT87_DRIVER_VERSION='\"$(shell git describe --long)\"'
+ifneq ("","$(wildcard .git/*)")
+IT87_CFLAGS=-DIT87_DRIVER_VERSION='\"$(shell git describe --long)\"'
+else
+IT87_CFLAGS=-DIT87_DRIVER_VERSION='\"<unknown>\"'
+endif
 
 modules:
-	@$(MAKE) EXTRA_CFLAGS=$(EXTRA_CFLAGS) -C $(KERNEL_BUILD) M=$(CURDIR) $@
+	@$(MAKE) EXTRA_CFLAGS="$(IT87_CFLAGS)" -C $(KERNEL_BUILD) M=$(CURDIR) $@
 
 clean:
 	@$(MAKE) -C $(KERNEL_BUILD) M=$(CURDIR) $@