1# Copyright 2015 Google Inc. All rights reserved
2#
3# Licensed under the Apache License, Version 2.0 (the "License");
4# you may not use this file except in compliance with the License.
5# You may obtain a copy of the License at
6#
7#      http://www.apache.org/licenses/LICENSE-2.0
8#
9# Unless required by applicable law or agreed to in writing, software
10# distributed under the License is distributed on an "AS IS" BASIS,
11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12# See the License for the specific language governing permissions and
13# limitations under the License.
14
15# Find source file location from path to this Makefile
16MAKEPARALLEL_SRC_PATH := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))
17ifndef MAKEPARALLEL_SRC_PATH
18  MAKEPARALLEL_SRC_PATH := .
19endif
20
21# Set defaults if they weren't set by the including Makefile
22MAKEPARALLEL_CXX ?= $(CXX)
23MAKEPARALLEL_LD ?= $(CXX)
24MAKEPARALLEL_INTERMEDIATES_PATH ?= .
25MAKEPARALLEL_BIN_PATH ?= .
26
27MAKEPARALLEL_CXX_SRCS := \
28	makeparallel.cpp
29
30MAKEPARALLEL_CXXFLAGS := -Wall -Werror -MMD -MP
31
32MAKEPARALLEL_CXX_SRCS := $(addprefix $(MAKEPARALLEL_SRC_PATH)/,\
33	$(MAKEPARALLEL_CXX_SRCS))
34
35MAKEPARALLEL_CXX_OBJS := $(patsubst $(MAKEPARALLEL_SRC_PATH)/%.cpp,$(MAKEPARALLEL_INTERMEDIATES_PATH)/%.o,$(MAKEPARALLEL_CXX_SRCS))
36
37MAKEPARALLEL := $(MAKEPARALLEL_BIN_PATH)/makeparallel
38
39ifeq ($(shell uname),Linux)
40MAKEPARALLEL_LIBS := -lrt -lpthread
41endif
42
43# Rule to build makeparallel into MAKEPARALLEL_BIN_PATH
44$(MAKEPARALLEL): $(MAKEPARALLEL_CXX_OBJS)
45	@mkdir -p $(dir $@)
46	$(MAKEPARALLEL_LD) -std=c++11 $(MAKEPARALLEL_CXXFLAGS) -o $@ $^ $(MAKEPARALLEL_LIBS)
47
48# Rule to build source files into object files in MAKEPARALLEL_INTERMEDIATES_PATH
49$(MAKEPARALLEL_CXX_OBJS): $(MAKEPARALLEL_INTERMEDIATES_PATH)/%.o: $(MAKEPARALLEL_SRC_PATH)/%.cpp
50	@mkdir -p $(dir $@)
51	$(MAKEPARALLEL_CXX) -c -std=c++11 $(MAKEPARALLEL_CXXFLAGS) -o $@ $<
52
53makeparallel_clean:
54	rm -rf $(MAKEPARALLEL)
55	rm -rf $(MAKEPARALLEL_INTERMEDIATES_PATH)/*.o
56	rm -rf $(MAKEPARALLEL_INTERMEDIATES_PATH)/*.d
57
58.PHONY: makeparallel_clean
59
60-include $(MAKEPARALLEL_INTERMEDIATES_PATH)/*.d
61
62.PHONY: makeparallel_test
63MAKEPARALLEL_TEST := MAKEFLAGS= MAKELEVEL= MAKEPARALLEL=$(MAKEPARALLEL) $(MAKE) -f Makefile.test test
64MAKEPARALLEL_NINJA_TEST := MAKEFLAGS= MAKELEVEL= MAKEPARALLEL="$(MAKEPARALLEL) --ninja" $(MAKE) -f Makefile.test test
65makeparallel_test: $(MAKEPARALLEL)
66	@EXPECTED="-j1234" $(MAKEPARALLEL_TEST) -j1234
67	@EXPECTED="-j123"  $(MAKEPARALLEL_TEST) -j123
68	@EXPECTED=""       $(MAKEPARALLEL_TEST) -j1
69	@EXPECTED="-j$$(($$(nproc) + 2))"   $(MAKEPARALLEL_TEST) -j
70	@EXPECTED=""       $(MAKEPARALLEL_TEST)
71
72	@EXPECTED="-j1234" $(MAKEPARALLEL_NINJA_TEST) -j1234
73	@EXPECTED="-j123"  $(MAKEPARALLEL_NINJA_TEST) -j123
74	@EXPECTED="-j1"    $(MAKEPARALLEL_NINJA_TEST) -j1
75	@EXPECTED="-j1"    $(MAKEPARALLEL_NINJA_TEST)
76	@EXPECTED=""       $(MAKEPARALLEL_NINJA_TEST) -j
77	@EXPECTED=""       $(MAKEPARALLEL_NINJA_TEST) -j -l
78
79	@EXPECTED="-j1234" $(MAKEPARALLEL_TEST) --no-print-directory -j1234
80	@EXPECTED="-j1234" $(MAKEPARALLEL_TEST) --no-print-directory -k -j1234
81	@EXPECTED="-j1234" $(MAKEPARALLEL_TEST) -k -j1234
82	@EXPECTED="-j1234" $(MAKEPARALLEL_TEST) -j1234 -k
83	@EXPECTED="-j1234" $(MAKEPARALLEL_TEST) -kt -j1234
84
85	@EXPECTED="-j1234"     $(MAKEPARALLEL_NINJA_TEST) --no-print-directory -j1234
86	@EXPECTED="-j1234 -k0" $(MAKEPARALLEL_NINJA_TEST) --no-print-directory -k -j1234
87	@EXPECTED="-j1234 -k0" $(MAKEPARALLEL_NINJA_TEST) -k -j1234
88	@EXPECTED="-j1234 -k0" $(MAKEPARALLEL_NINJA_TEST) -j1234 -k
89	@EXPECTED="-j1234 -k0" $(MAKEPARALLEL_NINJA_TEST) -kt -j1234
90
91	@EXPECTED=""       $(MAKEPARALLEL_TEST) A=-j1234
92
93	@EXPECTED="-j1234 args" ARGS="args" $(MAKEPARALLEL_TEST) -j1234
94