make $prefix available for sub-makefiles

diff --git a/Makefile b/Makefile
index 7ca77cf2af012aa4a6d936425e518618af9dd625..bcda94327347de5c9e0efc2f0491fa0db9ffb635 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -293,7 +293,7 @@ SCRIPTS = $(patsubst %.sh,%,$(SCRIPT_SH)) \
          $(patsubst %.py,%,$(SCRIPT_PYTHON)) \
          gitk
 
-export TAR INSTALL DESTDIR SHELL_PATH
+export prefix TAR INSTALL DESTDIR SHELL_PATH
 ### Build rules
 
 all: $(PROGRAMS) $(SCRIPTS)