rules/pngcrush.mk

   1 # This is free and unencumbered software released into the public
   2 # domain. To the extent possible under law, the author of this file
   3 # waives all copyright and related or neighboring rights to it.
   4
   5 .DELETE_ON_ERROR:
   6
   7 BUILDDIR ?= build/
   8 PNGCRUSHSTAMPDIR ?= $(BUILDDIR)/stamp
   9
  10 pngcrush-stampify = $(patsubst %.png,$(PNGCRUSHSTAMPDIR)/%.png.crushed,$1)
  11
  12 PNGCRUSH ?= pngcrush
  13 PNGCRUSHFLAGS ?= -brute -blacken -reduce -q
  14
  15 CRUSH.png ?= $(PNGCRUSH) $(PNGCRUSHFLAGS)
  16
  17 $(PNGCRUSHSTAMPDIR)/%.png.crushed: %.png
  18         $(CRUSH.png) -ow $<
  19         mkdir -p $(@D)
  20         touch $@