Makefile 1.8 KB

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  1. # Copyright Joyent, Inc. and other Node contributors. All rights reserved.
  2. #
  3. # Permission is hereby granted, free of charge, to any person obtaining a copy
  4. # of this software and associated documentation files (the "Software"), to
  5. # deal in the Software without restriction, including without limitation the
  6. # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  7. # sell copies of the Software, and to permit persons to whom the Software is
  8. # furnished to do so, subject to the following conditions:
  9. #
  10. # The above copyright notice and this permission notice shall be included in
  11. # all copies or substantial portions of the Software.
  12. #
  13. # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14. # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15. # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16. # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17. # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  18. # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  19. # IN THE SOFTWARE.
  20. SRCDIR ?= $(CURDIR)
  21. ifeq (,$(builddir_name))
  22. VPATH := $(SRCDIR)
  23. include $(SRCDIR)/build.mk
  24. else # Out of tree build.
  25. # Drop all built-in rules.
  26. .SUFFIXES:
  27. .PHONY: $(builddir_name)
  28. $(builddir_name): $(builddir_name)/.buildstamp
  29. $(MAKE) -C $@ -f $(CURDIR)/Makefile $(MAKECMDGOALS) \
  30. SRCDIR=$(CURDIR) builddir_name=
  31. $(builddir_name)/.buildstamp:
  32. mkdir -p $(dir $@)
  33. touch $@
  34. # Add no-op rules for Makefiles to stop make from trying to rebuild them.
  35. Makefile:: ;
  36. %.mk:: ;
  37. # Turn everything else into a no-op rule that depends on the build directory.
  38. %:: $(builddir_name) ;
  39. .PHONY: clean distclean
  40. clean distclean:
  41. $(RM) -fr $(builddir_name)
  42. endif