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Issue 39001: Breakpad Linux dumper: Refactor Makefile.
Use GNU Make features to make the dumper, unit tests, and maintenance targets more independent, so I get fewer conflicts as I work on different parts of the patch series. In particular: - Provide targets to run tests and produce test coverage reports. - Gather C and C++ build rules in one place. - Avoid variables that list object files, as pattern rules can compute these values directly from the dependencies. - Use VPATH to find sources in other directories. a=jimb, r=nealsid git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@441 4c0a9323-5329-0410-9bdc-e9ce6186880e
This commit is contained in:
jimblandy@gmail.com
parent
9dcc03f47d
commit
1c9c0568e0
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@ -1,37 +1,136 @@
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CXX=g++
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CC=gcc
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### Variables that can be overridden on the command line.
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CC = gcc
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CXX = g++
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CPPFLAGS = -DNDEBUG
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CXXFLAGS = -g3 -O2 -Wall -m32
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CPPFLAGS=-DNDEBUG
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CXXFLAGS=-g3 -O2 -Wall -m32
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# To produce test coverage reports:
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# 1) Build all .o files and executables without optimization and with
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# 'COVERAGE=1' on the make command line.
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# 2) Run the tests.
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# 3) Do 'make coverage'.
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# All in one command:
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# $ make CFLAGS='-O0' CXXFLAGS='-O0' COVERAGE=1 clean check coverage
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COVERAGE=
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# Build all executables.
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all::
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# Delete all generated files: executables, object files, test coverage
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# reports, etc.
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clean::
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# Run all tests.
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# You can run a specific test FOO with the command: 'make check-FOO'.
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check:
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# Generate coverage reports for the execution that has taken place
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# since the coverage data files were last deleted. Only files that
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# have been added to COVERAGE_SOURCES (see below) get reported on.
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coverage:
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# Reset all coverage counts. When coverage is enabled, each time you
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# run the program, it adds its execution counts into the profiling
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# data files in the build directory. 'make coverage-reset' deletes
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# those files, so the counts reported by 'make coverage' start from
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# zero again. Note that 'make clean' does this automatically.
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coverage-reset:
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.PHONY: all clean check coverage coverage-reset
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# These flags are necessary to compile correctly; the 'override'
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# command makes sure these are added even if the user sets CPPFLAGS on
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# the command line.
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override CPPFLAGS+=-I../../.. -D_REENTRANT
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### Variables used internally by this Makefile.
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.PHONY:all clean
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# The top of the breakpad source tree.
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SRC = ../../..
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BIN=dump_syms
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# A list of the executables that we should use the C++ compiler to
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# link. GNU make's default executable-from-object rule uses $(CC),
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# which doesn't include libstdc++, and perhaps does some other things
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# wrong as well. Every executable listed in this variable uses the
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# pattern rule provided at the bottom, which links all the
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# dependencies using $(CXX). Value accumulated throughout the file.
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CPP_EXECUTABLES =
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all:$(BIN)
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# Source files whose coverage we are interested in. Value accumulated
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# throughout the file.
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COVERAGE_SOURCES =
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DUMP_OBJ=dump_symbols.o dump_syms.o file_id.o stabs_reader.o module.o
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dump_syms:$(DUMP_OBJ)
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$(CXX) $(CPPFLAGS) $(CXXFLAGS) -o $@ $^
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### dump_syms: a program to produce Breakpad symbol files from the
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### debugging information in Linux executables.
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all:: dump_syms
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dump_syms: \
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dump_syms.o \
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dump_symbols.o \
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file_id.o \
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module.o \
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stabs_reader.o \
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$(empty)
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CPP_EXECUTABLES += dump_syms
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clean::
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rm -f dump_syms
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dump_symbols.o:../../../common/linux/dump_symbols.cc
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$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $^
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dump_syms.o: dump_syms.cc
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stabs_reader.o:../../../common/linux/stabs_reader.cc
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$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $^
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VPATH += $(SRC)/common/linux
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dump_symbols.o: dump_symbols.cc
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file_id.o: file_id.cc
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module.o: module.cc
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stabs_reader.o: stabs_reader.cc
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module.o:../../../common/linux/module.cc
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$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $^
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file_id.o:../../../common/linux/file_id.cc
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$(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $^
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### Generic compilation rules.
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clean:
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rm -f $(BIN) $(DUMP_OBJ)
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# Link C++ executables using the C++ compiler; see CPP_EXECUTABLES above.
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$(CPP_EXECUTABLES): %: %.o
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$(CXX) $(CXXFLAGS) $(COVERAGE_LDFLAGS) $(LDFLAGS) -o $@ $^
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# These flags are required for breakpad sources to compile correctly.
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BREAKPAD_CPPFLAGS = -I$(SRC) -D_REENTRANT
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%.o: %.cc
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$(CXX) -c $^ -o $@ $(CPPFLAGS) $(BREAKPAD_CPPFLAGS) $(CXXFLAGS)
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%.o: %.c
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$(CC) -c $^ -o $@ $(CPPFLAGS) $(BREAKPAD_CPPFLAGS) $(CFLAGS)
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clean::
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rm -f *.o core
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### Generic testing rules.
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### To define a test, make the 'check' target depend on a particular
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### target 'check-FOO' that runs your test, where FOO is the name of
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### the test executable, or something else people will expect.
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###
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### This pattern rule provides commands for 'check-FOO' that are
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### appropriate for Google C++ Testing Framework test programs. But
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### you can provide your own commands.
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check-%: %
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srcdir=$(SRC) ./$< $(TEST_ARGS)
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### Generic coverage reporting rules.
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coverage:
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gcov --branch-probabilities $(COVERAGE_SOURCES)
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coverage-reset:
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rm -f *.gcda
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# If code coverage is enabled, pass the appropriate coverage flags to
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# the compiler for the sources we care about.
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ifdef COVERAGE
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COVERAGE_C_SOURCES = $(filter %.c,$(COVERAGE_SOURCES))
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$(COVERAGE_C_SOURCES:.c=.o): override CFLAGS += --coverage
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COVERAGE_CXX_SOURCES = $(filter %.cc,$(COVERAGE_SOURCES))
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$(COVERAGE_CXX_SOURCES:.cc=.o): override CXXFLAGS += --coverage
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COVERAGE_LDFLAGS = --coverage
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endif
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clean:: coverage-reset
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clean::
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rm -f *.gcno *.gcov
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