rules/javascript.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 javascript>fallback = $(firstword $(shell command -v $1) $2 $1)
   8
   9 NPM ?= npm
  10 NPMROOT ?= $(CURDIR)
  11
  12 npmbindir = $(NPMROOT)/node_modules/.bin
  13 .PRECIOUS: $(npmbindir)/%
  14
  15 npmbin = $(call javascript>fallback,$1,$(npmbindir)/$1)
  16
  17 JSTEST ?= $(npmbindir)/jstest
  18 JSHINT ?= $(call npmbin,jshint)
  19
  20 uglifyjs_npm_package := uglify-js
  21
  22 UGLIFY ?= $(call npmbin,uglifyjs)
  23 UGLIFYFLAGS ?= --comments \
  24                --compress $(UGLIFYCOMPRESSFLAGS) \
  25                --mangle $(UGLIFYMANGLEFLAGS)
  26
  27 BUILDDIR ?= build/
  28 JSSTAMPDIR ?= $(BUILDDIR)/stamp
  29 JSHINTDIR ?= $(JSSTAMPDIR)
  30 JSTESTDIR ?= $(JSSTAMPDIR)
  31 JSUGLYDIR ?= $(CURDIR)
  32
  33 JSHINTFLAGS += $(if $(JSHINTCONFIG),--config $(JSHINTCONFIG))
  34 JSTESTFLAGS += $(if $(JSTESTFORMAT),--format $(JSTESTFORMAT))
  35 JSTESTENV += $(if $(JSTEST_NODE_PATH),NODE_PATH=$(JSTEST_NODE_PATH))
  36 JSTESTFORMAT ?= spec
  37
  38 jshint-stampify = $(patsubst %.js,$(JSHINTDIR)/%.js.lint,$1)
  39 jstest-stampify = $(patsubst %.js,$(JSTESTDIR)/%.js.test,$1)
  40 uglify-stampify = $(patsubst %.js,$(JSUGLYDIR)/%.min.js,$1)
  41
  42 javascript>capture-to-target = @echo "$1" && $1 > $@ || (cat $@ && exit 1)
  43
  44 UGLIFY.js = $(UGLIFY) $(UGLIFYFLAGS)
  45 LINT.js = $(JSHINT) $(JSHINTFLAGS)
  46 TEST.js = $(JSTESTENV) $(JSTEST) $(JSTESTFLAGS)
  47
  48 $(JSUGLYDIR)/%.min.js: %.js | $(UGLIFY)
  49         mkdir -p $(@D)
  50         $(UGLIFY.js) < $< > $@
  51
  52 $(JSHINTDIR)/%.js.lint: %.js | $(JSHINT)
  53         mkdir -p $(@D)
  54         $(LINT.js) $<
  55         touch $@
  56
  57 $(JSTESTDIR)/%.js.test: %.js | $(JSTEST)
  58         mkdir -p $(@D)
  59         $(call javascript>capture-to-target,$(TEST.js) $<)
  60
  61 $(npmbindir)/%:
  62         $(NPM) install $(firstword $(value $(@F)_npm_package) $(@F))