Makefile

#!/usr/bin/make

APP_VERSION ?= 0.0.0

CC              := musl-gcc
C_SIZE_FLAGS     = -Os -ffunction-sections -fdata-sections -fmerge-all-constants
C_SECURITY_FLAGS = -fstack-protector-strong -D_FORTIFY_SOURCE=2
C_WARNING_FLAGS  = -Wall -Wextra -Werror -Wpedantic -Wformat=2 -Wformat-security -Wnull-dereference \
	-Wstack-protector -Wstrict-overflow=3 -Wwrite-strings -Wconversion -Wshadow
C_STRIP_FLAGS    = -fno-asynchronous-unwind-tables -fno-ident
C_LDFLAGS_EXTRA ?= -static
C_LDFLAGS        = -Wl,--gc-sections -Wl,--as-needed -Wl,-O1 \
	-Wl,--build-id=none -Wl,--hash-style=gnu $(C_LDFLAGS_EXTRA)
STRIP_FLAGS      = -s -R .comment -R .gnu.version -R .note -R .note.ABI-tag \
	-R .note.gnu.build-id -R .gnu.hash -R .eh_frame -R .eh_frame_hdr

ifeq ($(shell uname -s),Darwin) # macOS linker flags (https://github.com/tarampampam/microcheck/issues/11)
	C_LDFLAGS   = -Wl,-dead_strip
	STRIP_FLAGS = -x
endif

CFLAGS = -std=c99 -D_POSIX_C_SOURCE=200809L
CFLAGS += $(C_SIZE_FLAGS) $(C_SECURITY_FLAGS) $(C_WARNING_FLAGS) $(C_STRIP_FLAGS)
LDFLAGS = $(C_LDFLAGS)

.DEFAULT_GOAL: all
all: \
	build/bin/httpcheck \
	build/bin/httpscheck \
	build/bin/portcheck \
	build/bin/parallel \
	build/bin/pidcheck

## Download mbedtls4 library
lib/mbedtls4:
	$(SHELL) ./lib/install-mbedtls4.sh $@

## Build mbedtls4 library
lib/mbedtls4/build: lib/mbedtls4
	mkdir -p $@
	CC=$(CC) CFLAGS="" cmake -S ./lib/mbedtls4 -B ./lib/mbedtls4/build \
		-DCMAKE_BUILD_TYPE=MinSizeRel -DCMAKE_C_FLAGS="-Os -ffunction-sections -fdata-sections" \
		-DENABLE_TESTING=OFF -DENABLE_PROGRAMS=OFF -DUSE_SHARED_MBEDTLS_LIBRARY=OFF
	cmake --build ./lib/mbedtls4/build --target lib -j$(shell nproc)

## Compile CLI module source files
build/obj/%.o: lib/cli/%.c lib/cli/cli.h
	mkdir -p $(dir $@)
	$(CC) -c $(CFLAGS) -o $@ $<

## Build CLI module static library
build/lib/cli.a: $(patsubst lib/cli/%.c,build/obj/%.o,$(wildcard lib/cli/*.c))
	mkdir -p $(dir $@)
	ar rcs $@ $^

## Build CLI module test binary
build/bin/cli_test: tests/unit/cli/cli_test.c build/lib/cli.a
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< build/lib/cli.a

## Compile COMMAND module source files
build/obj/%.o: lib/command/%.c lib/command/command.h
	mkdir -p $(dir $@)
	$(CC) -c $(CFLAGS) -o $@ $<

## Build COMMAND module static library
build/lib/command.a: $(patsubst lib/command/%.c,build/obj/%.o,$(wildcard lib/command/*.c))
	mkdir -p $(dir $@)
	ar rcs $@ $^

## Build COMMAND module test binary
build/bin/command_test: tests/unit/command/command_test.c build/lib/command.a
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< build/lib/command.a

## Compile HTTP module source files
build/obj/%.o: lib/http/%.c lib/http/http.h
	mkdir -p $(dir $@)
	$(CC) -c $(CFLAGS) -o $@ $<

## Build HTTP module static library
build/lib/http.a: $(patsubst lib/http/%.c,build/obj/%.o,$(wildcard lib/http/*.c))
	mkdir -p $(dir $@)
	ar rcs $@ $^

## Build HTTP module test binary
build/bin/http_test: tests/unit/http/http_test.c build/lib/http.a
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< build/lib/http.a

.PHONY: apps/version.h
apps/version.h:
	@printf '// Code generated by make; DO NOT EDIT.\n\n\
#ifndef VERSION_H\n#define VERSION_H\n#define APP_VERSION "%s"\n#endif\n' "$(APP_VERSION)" > $@

build/bin/httpscheck: apps/httpcheck.c apps/version.h build/lib/cli.a build/lib/http.a lib/mbedtls4/build
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) -DWITH_TLS \
		-Ilib/mbedtls4/include \
		-Ilib/mbedtls4/tf-psa-crypto/include \
		-Ilib/mbedtls4/tf-psa-crypto/drivers/builtin/include \
		$(LDFLAGS) -Llib/mbedtls4/build/library \
		-o $@ $< build/lib/cli.a build/lib/http.a \
		-lmbedtls -lmbedx509 -ltfpsacrypto
	strip $(STRIP_FLAGS) $@

build/bin/httpcheck: apps/httpcheck.c apps/version.h build/lib/cli.a build/lib/http.a
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< build/lib/cli.a build/lib/http.a
	strip $(STRIP_FLAGS) $@

build/bin/portcheck: apps/portcheck.c apps/version.h build/lib/cli.a
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< build/lib/cli.a
	strip $(STRIP_FLAGS) $@

build/bin/parallel: apps/parallel.c apps/version.h build/lib/cli.a build/lib/command.a
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< build/lib/cli.a build/lib/command.a
	strip $(STRIP_FLAGS) $@

build/bin/pidcheck: apps/pidcheck.c apps/version.h build/lib/cli.a
	mkdir -p $(dir $@)
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< build/lib/cli.a
	strip $(STRIP_FLAGS) $@

SRC_FILES := $(shell find ./apps ./lib -type f \( -name '*.c' -o -name '*.h' \) ! -path '*/apps/version.h' ! -path '*/lib/mbedtls4/*')

fmt: $(SRC_FILES)
	clang-format -i $^

test:	build/bin/httpcheck \
		  build/bin/httpscheck \
      build/bin/portcheck \
      build/bin/parallel \
      build/bin/pidcheck \
      build/bin/cli_test \
      build/bin/command_test \
      build/bin/http_test
	./build/bin/cli_test
	./build/bin/command_test
	./build/bin/http_test
	python3 ./tests/feature/httpcheck.py --bin ./build/bin/httpcheck
	python3 ./tests/feature/httpcheck.py --bin ./build/bin/httpscheck --https
	python3 ./tests/feature/httpcheck.py --bin ./build/bin/httpscheck --fallback
	python3 ./tests/feature/portcheck.py --bin ./build/bin/portcheck
	python3 ./tests/feature/parallel.py --bin ./build/bin/parallel
	python3 ./tests/feature/pidcheck.py --bin ./build/bin/pidcheck

#.PHONY: clean
clean:
	-rm ./apps/version.h
	-rm -r ./build
	-rm -r ./lib/mbedtls4/build