sparklemotion/nokogiri

.PHONY: all clean check coverage

gumbo_objs := $(patsubst %.c,build/%.o,$(wildcard src/*.c))
test_objs := $(patsubst %.cc,build/%.o,$(wildcard test/*.cc))
gtest_lib := googletest/make/gtest_main.a

# make SANITIZEFLAGS='-fsanitize=undefined -fsanitize=address'
SANITIZEFLAGS :=
CPPFLAGS := -Isrc
CFLAGS := -std=c99 -Os -Wall
CXXFLAGS := -isystem googletest/include -std=c++11 -Os -Wall
LDFLAGS := -pthread

all: check

oss-fuzz:
    ./fuzzer/build-ossfuzz.sh

fuzzers: fuzzer-normal fuzzer-asan fuzzer-ubsan fuzzer-msan

fuzzer-normal:
    ./fuzzer/build.sh

fuzzer-asan:
    SANITIZER=asan ./fuzzer/build.sh

fuzzer-ubsan:
    SANITIZER=ubsan ./fuzzer/build.sh

fuzzer-msan:
    SANITIZER=msan ./fuzzer/build.sh

# don't try to regenerate ragel or gperf files in CI, that should be a development-only action and
# the generated files should be committed to SCM
ifneq ($(CI),true)
src/foreign_attrs.c: src/foreign_attrs.gperf
    gperf -m100 -n $< | ./gperf-filter.sed > $@

src/%.c: src/%.gperf
    gperf -m100 $< | ./gperf-filter.sed > $@

src/%.c: src/%.rl
    ragel -F1 -o $@ $<
endif

build/src:
    mkdir -p $@

build/test:
    mkdir -p $@

build/src/%.o: src/%.c build/src/flags | build/src
    $(CC) -MMD $(CPPFLAGS) $(CFLAGS) $(SANITIZEFLAGS) -c -o $@ $<

build/test/%.o: test/%.cc build/test/flags | build/test
    $(CXX) -MMD $(CPPFLAGS) $(CXXFLAGS) $(SANITIZEFLAGS) -c -o $@ $<

build/run_tests: $(gumbo_objs) $(test_objs) $(gtest_lib)
    $(CXX) -o $@ $+ $(LDFLAGS) $(SANITIZEFLAGS)

check: build/run_tests
    ./build/run_tests

coverage:
    $(RM) build/{src,test}/*.gcda
    $(RM) build/*.info
    $(MAKE) CPPFLAGS='-Isrc -DNDEBUG=1' \
        CFLAGS='-std=c99 --coverage -g -O0' \
        CXXFLAGS='-isystem googletest/include -std=c++11 --coverage -g -O0' \
        LDFLAGS='--coverage' \
        build/run_tests
    lcov    --no-external \
        --initial \
        --capture \
        --base-directory . \
        --directory build \
        --output-file build/coverage-pre.info
    awk    -F '[:,]' \
        '/^SF:/ { delete defs } /^FN:/ { defs[$$2]=1 } /^DA:/ { if ($$3 == 0 && $$2 in defs) next } { print }' \
        build/coverage-pre.info > build/coverage-initial.info
    ./build/run_tests
    lcov    --no-external \
        --capture \
        --base-directory . \
        --directory build \
        --rc lcov_branch_coverage=1 \
        --output-file build/coverage-test.info
    lcov    --add-tracefile build/coverage-initial.info \
        --add-tracefile build/coverage-test.info \
        --rc lcov_branch_coverage=1 \
        --output-file build/coverage.info
    lcov    --remove build/coverage.info '$(CURDIR)/googletest/*' \
        --rc lcov_branch_coverage=1 \
        --output-file build/coverage.info
    genhtml --branch-coverage \
        --output-directory build/coverage \
        build/coverage.info

clean:
    $(RM) -r build
    $(RM) -r fuzzer/build fuzzer/src-* fuzzer/gumbo_corpus

build/src/flags: | build/src
    @echo 'old_CC := $(CC)' > $@
    @echo 'old_CPPFLAGS := $(CPPFLAGS)' >> $@
    @echo 'old_CFLAGS := $(CFLAGS)' >>$@
    @echo 'old_SANITIZEFLAGS := $(SANITIZEFLAGS)' >> $@
    @echo 'old_LDFLAGS := $(LDFLAGS)' >> $@

build/test/flags: | build/test
    @echo 'old_CXX := $(CXX)' > $@
    @echo 'old_CPPFLAGS := $(CPPFLAGS)' >> $@
    @echo 'old_CXXFLAGS := $(CXXFLAGS)' >> $@
    @echo 'old_SANITIZEFLAGS := $(SANITIZEFLAGS)' >> $@
    @echo 'old_LDFLAGS := $(LDFLAGS)' >> $@

ifeq (,$(filter clean coverage,$(MAKECMDGOALS)))
# Ensure that the flags are up to date.
-include build/src/flags build/test/flags
ifneq ($(old_CC) | $(old_CPPFLAGS) | $(old_CFLAGS) | $(old_SANITIZEFLAGS) | $(old_LDFLAGS),$(CC) | $(CPPFLAGS) | $(CFLAGS) | $(SANITIZEFLAGS) | $(LDFLAGS))
.PHONY: build/src/flags
endif
ifneq ($(old_CXX) | $(old_CPPFLAGS) | $(old_CXXFLAGS) | $(old_SANITIZEFLAGS) | $(old_LDFLAGS),$(CXX) | $(CPPFLAGS) | $(CXXFLAGS) | $(SANITIZEFLAGS) | $(LDFLAGS))
.PHONY: build/test/flags
endif

# Include dependencies.
-include $(test_objs:.o=.d) $(gumbo_objs:.o=.d)
endif