Allow building kati & makeparallel with soong

This uses far fewer hacks in order to build these host tools, but will
require more libraries(libc++,etc) from unbundled and stripped down
branches.

Once this becomes the only option, all builds will happen after soong
runs. Then the toolchain / global cflags information will be able to be
moved from make to soong (and exported back to make).

Change-Id: I270b1d92bcef28a96fbc3ec9910d9bd0c101ac0f

core/ninja.mk

@@ -1,6 +1,15 @@
+NINJA ?= prebuilts/ninja/$(HOST_PREBUILT_TAG)/ninja
+
+ifeq ($(USE_SOONG),true)
+USE_SOONG_FOR_KATI := true
+endif
+
+ifeq ($(USE_SOONG_FOR_KATI),true)
+include $(BUILD_SYSTEM)/soong.mk
+else
 KATI ?= $(HOST_OUT_EXECUTABLES)/ckati
 MAKEPARALLEL ?= $(HOST_OUT_EXECUTABLES)/makeparallel
-NINJA ?= prebuilts/ninja/$(HOST_PREBUILT_TAG)/ninja
+endif
 
 KATI_OUTPUT_PATTERNS := $(OUT_DIR)/build%.ninja $(OUT_DIR)/ninja%.sh
 
@@ -119,8 +128,6 @@ NINJA_MAKEPARALLEL := $(MAKEPARALLEL) --ninja
 endif
 
 ifeq ($(USE_SOONG),true)
-include $(BUILD_SYSTEM)/soong.mk
-
 COMBINED_BUILD_NINJA := $(OUT_DIR)/combined$(KATI_NINJA_SUFFIX).ninja
 
 $(COMBINED_BUILD_NINJA): $(KATI_BUILD_NINJA) $(SOONG_ANDROID_MK)
@@ -147,6 +154,7 @@ $(KATI_BUILD_NINJA): $(KATI) $(MAKEPARALLEL) $(SOONG_ANDROID_MK) FORCE
 	@echo Running kati to generate build$(KATI_NINJA_SUFFIX).ninja...
 	+$(hide) $(KATI_MAKEPARALLEL) $(KATI) --ninja --ninja_dir=$(OUT_DIR) --ninja_suffix=$(KATI_NINJA_SUFFIX) --regen --ignore_dirty=$(OUT_DIR)/% --no_ignore_dirty=$(SOONG_ANDROID_MK) --ignore_optional_include=$(OUT_DIR)/%.P --detect_android_echo $(KATI_FIND_EMULATOR) -f build/core/main.mk $(KATI_GOALS) --gen_all_targets BUILDING_WITH_NINJA=true SOONG_ANDROID_MK=$(SOONG_ANDROID_MK)
 
+ifneq ($(USE_SOONG_FOR_KATI),true)
 KATI_CXX := $(CLANG_CXX) $(CLANG_HOST_GLOBAL_CFLAGS) $(CLANG_HOST_GLOBAL_CPPFLAGS)
 KATI_LD := $(CLANG_CXX) $(CLANG_HOST_GLOBAL_LDFLAGS)
 # Build static ckati. Unfortunately Mac OS X doesn't officially support static exectuables.
@@ -168,6 +176,7 @@ endif
 MAKEPARALLEL_INTERMEDIATES_PATH := $(HOST_OUT_INTERMEDIATES)/EXECUTABLES/makeparallel_intermediates
 MAKEPARALLEL_BIN_PATH := $(HOST_OUT_EXECUTABLES)
 include build/tools/makeparallel/Makefile
+endif
 
 .PHONY: FORCE
 FORCE:

core/soong.mk

@@ -4,6 +4,9 @@ SOONG_BUILD_NINJA := $(SOONG_OUT_DIR)/build.ninja
 SOONG_ANDROID_MK := $(SOONG_OUT_DIR)/Android.mk
 SOONG_VARIABLES := $(SOONG_OUT_DIR)/soong.variables
 SOONG_IN_MAKE := $(SOONG_OUT_DIR)/.soong.in_make
+SOONG_HOST_EXECUTABLES := $(SOONG_OUT_DIR)/host/$(HOST_PREBUILT_TAG)/bin
+KATI := $(SOONG_HOST_EXECUTABLES)/ckati
+MAKEPARALLEL := $(SOONG_HOST_EXECUTABLES)/makeparallel
 
 ifeq (,$(filter /%,$(SOONG_OUT_DIR)))
 SOONG_TOP_RELPATH := $(shell python -c "import os; print os.path.relpath('$(TOP)', '$(SOONG_OUT_DIR)')")
@@ -57,4 +60,7 @@ $(SOONG_IN_MAKE):
 
 # Build an Android.mk listing all soong outputs as prebuilts
 $(SOONG_ANDROID_MK): $(SOONG) $(SOONG_VARIABLES) $(SOONG_IN_MAKE) FORCE
-	$(hide) $(SOONG) $(SOONG_BUILD_NINJA) $(NINJA_ARGS)
+	$(hide) $(SOONG) $(KATI) $(MAKEPARALLEL) $(NINJA_ARGS)
+
+$(KATI): $(SOONG_ANDROID_MK)
+$(MAKEPARALLEL): $(SOONG_ANDROID_MK)

tools/makeparallel/Android.bp

@@ -0,0 +1,26 @@
+// Copyright 2016 Google Inc. All rights reserved
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_binary_host {
+    name: "makeparallel",
+    srcs: [
+        "makeparallel.cpp",
+    ],
+    cflags: ["-Wall", "-Werror"],
+    target: {
+        linux: {
+            host_ldlibs: ["-lrt", "-lpthread"],
+        },
+    },
+}