[node] make task for building node via Xcode

Makefile

@@ -84,6 +84,9 @@ apackage: android-lib-mips
 .PHONY: node
 node: ; $(RUN) HTTP=none ASSET=none CACHE=none Makefile/node
 
+.PHONY: xnode
+xnode: ; $(RUN) HTTP=none ASSET=none CACHE=none Xcode/node
+
 .PHONY: test
 test: ; $(RUN) Makefile/test
 test-%: ; $(RUN) test-$*

binding.gyp

@@ -10,7 +10,9 @@
         'mbgl.gyp:headless-<(headless_lib)',
       ],
 
-      'include_dirs': [ "<!(node -e \"require('nan')\")" ],
+      'include_dirs': [
+        "<!(node -e \"require('nan')\")",
+      ],
 
       'sources': [
         'platform/node/src/node_mapbox_gl_native.cpp',

scripts/main.mk

@@ -97,6 +97,10 @@ node/configure:
 	$(QUIET)$(ENV) $(NODE_PRE_GYP) configure --clang -- \
 	$(GYP_FLAGS) -Dlibuv_ldflags= -Dlibuv_static_libs=
 
+node/xproj:
+	$(QUIET)$(ENV) $(NODE_PRE_GYP) configure --clang -- \
+	$(GYP_FLAGS) -f xcode -Dlibuv_ldflags= -Dlibuv_static_libs=
+
 Makefile/node: Makefile/__project__ node/configure
 	@printf "$(TEXT_BOLD)$(COLOR_GREEN)* Building target node...$(FORMAT_END)\n"
 	$(QUIET)$(ENV) $(NODE_PRE_GYP) build --clang -- \
@@ -106,6 +110,16 @@ Makefile/%: Makefile/__project__
 	@printf "$(TEXT_BOLD)$(COLOR_GREEN)* Building target $*...$(FORMAT_END)\n"
 	$(QUIET)$(ENV) $(MAKE) -C build/$(HOST_SLUG) BUILDTYPE=$(BUILDTYPE) $*
 
+Xcode/node: Xcode/__project__ node/xproj
+	@printf "$(TEXT_BOLD)$(COLOR_GREEN)* Building target node...$(FORMAT_END)\n"
+	$(QUIET)$(ENV) set -o pipefail && xcodebuild \
+		$(XCODEBUILD_ARGS) \
+		-project ./build/binding.xcodeproj \
+		-configuration $(BUILDTYPE) \
+		-target mapbox-gl-native \
+		-jobs $(JOBS) \
+		$(XCPRETTY)
+
 Xcode/%: Xcode/__project__
 	@printf "$(TEXT_BOLD)$(COLOR_GREEN)* Building target $*...$(FORMAT_END)\n"
 	$(QUIET)$(ENV) set -o pipefail && xcodebuild \