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littlefs/Makefile
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Christopher Haster 30175de384 Remove -Wshadow -Wjump-misses-init -Wundef
Doing this now specifically because clang does not have
-Wjump-misses-init, but I've been looking for an excuse to remove these
for a while.

These warning flags create more annoyance than they add value. There is
probably a reason they aren't included in -Wall + -Wextra.

-Wshadow specifically is potentially harmful as it forces coming up with
new, sometimes less descriptive names for repeated variables.

Dependent projects should use different flags for their dependencies if
this introduces problems.
2022-09-07 12:38:04 -05:00

173 lines
3.8 KiB
Makefile

ifdef BUILDDIR
# make sure BUILDDIR ends with a slash
override BUILDDIR := $(BUILDDIR)/
# bit of a hack, but we want to make sure BUILDDIR directory structure
# is correct before any commands
$(if $(findstring n,$(MAKEFLAGS)),, $(shell mkdir -p \
$(BUILDDIR) \
$(BUILDDIR)bd \
$(BUILDDIR)tests))
endif
# overridable target/src/tools/flags/etc
ifneq ($(wildcard test.c main.c),)
TARGET ?= $(BUILDDIR)lfs
else
TARGET ?= $(BUILDDIR)lfs.a
endif
CC ?= gcc
AR ?= ar
SIZE ?= size
CTAGS ?= ctags
NM ?= nm
OBJDUMP ?= objdump
LCOV ?= lcov
SRC ?= $(wildcard *.c)
OBJ := $(SRC:%.c=$(BUILDDIR)%.o)
DEP := $(SRC:%.c=$(BUILDDIR)%.d)
ASM := $(SRC:%.c=$(BUILDDIR)%.s)
CGI := $(SRC:%.c=$(BUILDDIR)%.ci)
ifdef DEBUG
override CFLAGS += -O0
else
override CFLAGS += -Os
endif
ifdef TRACE
override CFLAGS += -DLFS_YES_TRACE
endif
override CFLAGS += -g3
override CFLAGS += -I.
override CFLAGS += -std=c99 -Wall -Wextra -pedantic
ifdef VERBOSE
override TESTFLAGS += -v
override CALLSFLAGS += -v
override CODEFLAGS += -v
override DATAFLAGS += -v
override STACKFLAGS += -v
override STRUCTSFLAGS += -v
override COVERAGEFLAGS += -v
endif
ifdef EXEC
override TESTFLAGS += --exec="$(EXEC)"
endif
ifdef COVERAGE
override TESTFLAGS += --coverage
endif
ifdef BUILDDIR
override TESTFLAGS += --build-dir="$(BUILDDIR:/=)"
override CALLSFLAGS += --build-dir="$(BUILDDIR:/=)"
override CODEFLAGS += --build-dir="$(BUILDDIR:/=)"
override DATAFLAGS += --build-dir="$(BUILDDIR:/=)"
override STACKFLAGS += --build-dir="$(BUILDDIR:/=)"
override STRUCTSFLAGS += --build-dir="$(BUILDDIR:/=)"
override COVERAGEFLAGS += --build-dir="$(BUILDDIR:/=)"
endif
ifneq ($(NM),nm)
override CODEFLAGS += --nm-tool="$(NM)"
override DATAFLAGS += --nm-tool="$(NM)"
endif
ifneq ($(OBJDUMP),objdump)
override STRUCTSFLAGS += --objdump-tool="$(OBJDUMP)"
endif
# commands
.PHONY: all build
all build: $(TARGET)
.PHONY: asm
asm: $(ASM)
.PHONY: size
size: $(OBJ)
$(SIZE) -t $^
.PHONY: tags
tags:
$(CTAGS) --totals --c-types=+p $(shell find -H -name '*.h') $(SRC)
.PHONY: calls
calls: $(CGI)
./scripts/calls.py $^ $(CALLSFLAGS)
.PHONY: test
test:
./scripts/test.py $(TESTFLAGS)
.SECONDEXPANSION:
test%: tests/test$$(firstword $$(subst \#, ,%)).toml
./scripts/test.py $@ $(TESTFLAGS)
.PHONY: code
code: $(OBJ)
./scripts/code.py $^ -S $(CODEFLAGS)
.PHONY: data
data: $(OBJ)
./scripts/data.py $^ -S $(DATAFLAGS)
.PHONY: stack
stack: $(CGI)
./scripts/stack.py $^ -S $(STACKFLAGS)
.PHONY: structs
structs: $(OBJ)
./scripts/structs.py $^ -S $(STRUCTSFLAGS)
.PHONY: coverage
coverage:
./scripts/coverage.py $(BUILDDIR)tests/*.toml.info -s $(COVERAGEFLAGS)
.PHONY: summary
summary: $(BUILDDIR)lfs.csv
./scripts/summary.py -Y $^ $(SUMMARYFLAGS)
# rules
-include $(DEP)
.SUFFIXES:
$(BUILDDIR)lfs: $(OBJ)
$(CC) $(CFLAGS) $^ $(LFLAGS) -o $@
$(BUILDDIR)lfs.a: $(OBJ)
$(AR) rcs $@ $^
$(BUILDDIR)lfs.csv: $(OBJ) $(CGI)
./scripts/code.py $(OBJ) -q $(CODEFLAGS) -o $@
./scripts/data.py $(OBJ) -q -m $@ $(DATAFLAGS) -o $@
./scripts/stack.py $(CGI) -q -m $@ $(STACKFLAGS) -o $@
./scripts/structs.py $(OBJ) -q -m $@ $(STRUCTSFLAGS) -o $@
$(if $(COVERAGE),\
./scripts/coverage.py $(BUILDDIR)tests/*.toml.info \
-q -m $@ $(COVERAGEFLAGS) -o $@)
$(BUILDDIR)%.o: %.c
$(CC) -c -MMD $(CFLAGS) $< -o $@
$(BUILDDIR)%.s: %.c
$(CC) -S $(CFLAGS) $< -o $@
# gcc depends on the output file for intermediate file names, so
# we can't omit to .o output. We also need to serialize with the
# normal .o rule because otherwise we can end up with multiprocess
# problems with two instances of gcc modifying the same .o
$(BUILDDIR)%.ci: %.c | $(BUILDDIR)%.o
$(CC) -c -MMD -fcallgraph-info=su $(CFLAGS) $< -o $|
# clean everything
.PHONY: clean
clean:
rm -f $(BUILDDIR)lfs
rm -f $(BUILDDIR)lfs.a
rm -f $(BUILDDIR)lfs.csv
rm -f $(OBJ)
rm -f $(CGI)
rm -f $(DEP)
rm -f $(ASM)
rm -f $(BUILDDIR)tests/*.toml.*