mkmakefile 1.1 KB

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  1. #!/bin/sh
  2. # Generates a small Makefile used in the root of the output
  3. # directory, to allow make to be started from there.
  4. # The Makefile also allow for more convenient build of external modules
  5. # Usage
  6. # $1 - Kernel src directory
  7. # $2 - Output directory
  8. test ! -r $2/Makefile -o -O $2/Makefile || exit 0
  9. # Only overwrite automatically generated Makefiles
  10. # (so we do not overwrite buildroot Makefile)
  11. if test -e $2/Makefile && ! grep -q Automatically $2/Makefile
  12. then
  13. exit 0
  14. fi
  15. echo " GEN $2/Makefile"
  16. cat << EOF > $2/Makefile
  17. # Automatically generated by $0: don't edit
  18. ifeq ("\$(origin V)", "command line")
  19. VERBOSE := \$(V)
  20. endif
  21. ifneq (\$(VERBOSE),1)
  22. Q := @
  23. endif
  24. lastword = \$(word \$(words \$(1)),\$(1))
  25. makedir := \$(dir \$(call lastword,\$(MAKEFILE_LIST)))
  26. MAKEARGS := -C $1
  27. MAKEARGS += O=\$(if \$(patsubst /%,,\$(makedir)),\$(CURDIR)/)\$(patsubst %/,%,\$(makedir))
  28. MAKEFLAGS += --no-print-directory
  29. .PHONY: _all \$(MAKECMDGOALS)
  30. all := \$(filter-out Makefile,\$(MAKECMDGOALS))
  31. _all:
  32. \$(Q)umask 0022 && \$(MAKE) \$(MAKEARGS) \$(all)
  33. Makefile:;
  34. \$(all): _all
  35. @:
  36. %/: _all
  37. @:
  38. EOF