GNUmakefile

   1 have-gnulib-files := $(shell test -f gnulib.mk && test -f maint.mk && echo yes)
   2 ifneq ($(have-gnulib-files),yes)
   3 gnulib.mk:
   4         ln -s build-aux/GNUmakefile gnulib.mk || cp build-aux/GNUmakefile gnulib.mk
   5         ln -s build-aux/maint.mk maint.mk || cp build-aux/maint.mk maint.mk
   6 endif
   7
   8 -include gnulib.mk