ifeq ($(COV),1)

#----------------------------------------------------------------------------------------------

CC_FLAGS.coverage += --coverage
LD_FLAGS.coverage += --coverage

COV_DIR=$(BINROOT)/cov
COV_PROFDATA=$(COV_DIR)/cov.profdata
COV_INFO=$(BINROOT)/cov.info

export LLVM_PROFILE_FILE=$(COV_DIR)/cov-%p-%m.profraw

#----------------------------------------------------------------------------------------------

COV_EXCLUDE += \
	'/Applications/*' \
	'/usr/*'

COV_EXCLUDE.llvm += \
	"/rustc/*" \
	"$$HOME/.cargo/*"

#----------------------------------------------------------------------------------------------

define COVERAGE_RESET
$(SHOW)set -e ;\
echo "Starting coverage analysys." ;\
mkdir -p $(COV_DIR) ;\
lcov --directory $(BINROOT) --base-directory $(SRCDIR) -z
endef

define COVERAGE_RESET.llvm
$(SHOW)set -e ;\
echo "Starting coverage analysys." ;\
rm -rf $(COV_DIR) ;\
mkdir -p $(COV_DIR)
endef

COVERAGE_RESET.rust=$(COVERAGE_RESET.llvm)

#----------------------------------------------------------------------------------------------

define COVERAGE_COLLECT
$(SHOW)set -e ;\
echo "Collecting coverage data ..." ;\
lcov --capture --directory $(BINROOT) --base-directory $(SRCDIR) --output-file $(COV_INFO) ;\
lcov -o $(COV_INFO).1 -r $(COV_INFO) $(COV_EXCLUDE) ;\
mv $(COV_INFO).1 $(COV_INFO)
endef

define COVERAGE_COLLECT.llvm
$(SHOW)set -e ;\
echo "Collecting coverage data ..." ;\
llvm-profdata merge --sparse `ls $(COV_DIR)/*.profraw` -o $(COV_PROFDATA) ;\
llvm-cov export --format=lcov --instr-profile $(COV_PROFDATA) $(TARGET) > $(COV_INFO).all ;\
lcov -o $(COV_INFO) -r $(COV_INFO).all $(COV_EXCLUDE.llvm)
endef

define COVERAGE_COLLECT.rust
$(SHOW)set -e ;\
echo "Collecting coverage data ..." ;\
llvm-profdata merge --sparse `ls $(COV_DIR)/*.profraw` -o $(COV_PROFDATA) ;\
llvm-cov export --format=lcov --instr-profile $(COV_PROFDATA) $(TARGET) > $(COV_INFO).all ;\
lcov -o $(COV_INFO) -r $(COV_INFO).all $(COV_EXCLUDE.llvm)
endef

#----------------------------------------------------------------------------------------------

define COVERAGE_REPORT
$(SHOW)set -e ;\
lcov -l $(COV_INFO) ;\
genhtml --legend --ignore-errors source -o $(COV_DIR) $(COV_INFO) ;\
echo "Coverage info at $$(realpath $(COV_DIR))/index.html"
endef

#----------------------------------------------------------------------------------------------

define COVERAGE_COLLECT_REPORT
$(COVERAGE_COLLECT)
$(COVERAGE_REPORT)
endef

define COVERAGE_COLLECT_REPORT.llvm
$(COVERAGE_COLLECT.llvm)
$(COVERAGE_REPORT)
endef

#----------------------------------------------------------------------------------------------
else # ! COV

COVERAGE_RESET=
COVERAGE_COLLECT=
COVERAGE_REPORT=
COVERAGE_COLLECT_REPORT=

COVERAGE_RESET.llvm=
COVERAGE_COLLECT.llvm=
COVERAGE_COLLECT_REPORT.llvm=

#----------------------------------------------------------------------------------------------

endif # COV