Makefile - platform/external/fsverity-utils - Git at Google

 # SPDX-License-Identifier: MIT
 # Copyright 2020 Google LLC
 #
 # Use of this source code is governed by an MIT-style
 # license that can be found in the LICENSE file or at
 # https://opensource.org/licenses/MIT.


 # Use 'make help' to list available targets.
 #
 # Define V=1 to enable "verbose" mode, showing all executed commands.
 #
 # Define USE_SHARED_LIB=1 to link the fsverity binary to the shared library
 # libfsverity.so rather than to the static library libfsverity.a.
 #
 # Define PREFIX to override the installation prefix, like './configure --prefix'
 # in autotools-based projects (default: /usr/local)
 #
 # Define BINDIR to override where to install binaries, like './configure
 # --bindir' in autotools-based projects (default: PREFIX/bin)
 #
 # Define INCDIR to override where to install headers, like './configure
 # --includedir' in autotools-based projects (default: PREFIX/include)
 #
 # Define LIBDIR to override where to install libraries, like './configure
 # --libdir' in autotools-based projects (default: PREFIX/lib)
 #
 # Define DESTDIR to override the installation destination directory
 # (default: empty string)
 #
 # You can also specify custom CC, CFLAGS, CPPFLAGS, LDFLAGS, and/or PKGCONF.
 #
 ##############################################################################

 cc-option = $(shell if $(CC) $(1) -c -x c /dev/null -o /dev/null > /dev/null 2>&1; \
 	      then echo $(1); fi)

 # Support building with MinGW for minimal Windows fsverity.exe, but not for
 # libfsverity. fsverity.exe will be statically linked.
 ifneq ($(findstring -mingw,$(shell $(CC) -dumpmachine 2>/dev/null)),)
 MINGW = 1
 endif

 CFLAGS ?= -O2

 override CFLAGS := -Wall -Wundef				\
 	$(call cc-option,-Wdeclaration-after-statement)		\
 	$(call cc-option,-Wimplicit-fallthrough)		\
 	$(call cc-option,-Wmissing-field-initializers)		\
 	$(call cc-option,-Wmissing-prototypes)			\
 	$(call cc-option,-Wstrict-prototypes)			\
 	$(call cc-option,-Wunused-parameter)			\
 	$(call cc-option,-Wvla)					\
 	$(CFLAGS)

 override CPPFLAGS := -Iinclude -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE $(CPPFLAGS)

 ifneq ($(V),1)
 QUIET_CC        = @echo '  CC      ' $@;
 QUIET_CCLD      = @echo '  CCLD    ' $@;
 QUIET_AR        = @echo '  AR      ' $@;
 QUIET_LN        = @echo '  LN      ' $@;
 QUIET_GEN       = @echo '  GEN     ' $@;
 endif
 USE_SHARED_LIB  ?=
 PREFIX          ?= /usr/local
 BINDIR          ?= $(PREFIX)/bin
 INCDIR          ?= $(PREFIX)/include
 LIBDIR          ?= $(PREFIX)/lib
 DESTDIR         ?=
 ifneq ($(MINGW),1)
 PKGCONF         ?= pkg-config
 else
 PKGCONF         := false
 EXEEXT          := .exe
 endif
 FSVERITY        := fsverity$(EXEEXT)

 # Rebuild if a user-specified setting that affects the build changed.
 .build-config: FORCE
 	@flags=$$(							\
 		echo 'CC=$(CC)';					\
 		echo 'CFLAGS=$(CFLAGS)';				\
 		echo 'CPPFLAGS=$(CPPFLAGS)';				\
 		echo 'LDFLAGS=$(LDFLAGS)';				\
 		echo 'LDLIBS=$(LDLIBS)';				\
 		echo 'USE_SHARED_LIB=$(USE_SHARED_LIB)';		\
 	);								\
 	if [ "$$flags" != "`cat $@ 2>/dev/null`" ]; then		\
 		[ -e $@ ] && echo "Rebuilding due to new settings";	\
 		echo "$$flags" > $@;					\
 	fi

 DEFAULT_TARGETS :=
 COMMON_HEADERS  := $(wildcard common/*.h)
 LDLIBS          := $(shell "$(PKGCONF)" libcrypto --libs 2>/dev/null || echo -lcrypto)
 CFLAGS          += $(shell "$(PKGCONF)" libcrypto --cflags 2>/dev/null || echo)

 # If we are dynamically linking, when running tests we need to override
 # LD_LIBRARY_PATH as no RPATH is set
 ifdef USE_SHARED_LIB
 RUN_FSVERITY    = LD_LIBRARY_PATH=./ $(TEST_WRAPPER_PROG) ./$(FSVERITY)
 else
 RUN_FSVERITY    = $(TEST_WRAPPER_PROG) ./$(FSVERITY)
 endif

 ##############################################################################

 #### Library

 SOVERSION       := 0
 LIB_CFLAGS      := $(CFLAGS) -fvisibility=hidden
 LIB_SRC         := $(wildcard lib/*.c)
 ifeq ($(MINGW),1)
 LIB_SRC         := $(filter-out lib/enable.c,${LIB_SRC})
 endif
 LIB_HEADERS     := $(wildcard lib/*.h) $(COMMON_HEADERS)
 STATIC_LIB_OBJ  := $(LIB_SRC:.c=.o)
 SHARED_LIB_OBJ  := $(LIB_SRC:.c=.shlib.o)

 # Compile static library object files
 $(STATIC_LIB_OBJ): %.o: %.c $(LIB_HEADERS) .build-config
 	$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(LIB_CFLAGS) $<

 # Compile shared library object files
 $(SHARED_LIB_OBJ): %.shlib.o: %.c $(LIB_HEADERS) .build-config
 	$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(LIB_CFLAGS) -fPIC $<

 # Create static library
 libfsverity.a:$(STATIC_LIB_OBJ)
 	$(QUIET_AR) $(AR) cr $@ $+

 DEFAULT_TARGETS += libfsverity.a

 # Create shared library
 libfsverity.so.$(SOVERSION):$(SHARED_LIB_OBJ)
 	$(QUIET_CCLD) $(CC) -o $@ -Wl,-soname=$@ -shared $+ \
 		$(CFLAGS) $(LDFLAGS) $(LDLIBS)

 DEFAULT_TARGETS += libfsverity.so.$(SOVERSION)

 # Create the symlink libfsverity.so => libfsverity.so.$(SOVERSION)
 libfsverity.so:libfsverity.so.$(SOVERSION)
 	$(QUIET_LN) ln -sf $+ $@

 DEFAULT_TARGETS += libfsverity.so

 ##############################################################################

 #### Programs

 ALL_PROG_SRC      := $(wildcard programs/*.c)
 ALL_PROG_OBJ      := $(ALL_PROG_SRC:.c=.o)
 ALL_PROG_HEADERS  := $(wildcard programs/*.h) $(COMMON_HEADERS)
 PROG_COMMON_SRC   := programs/utils.c
 PROG_COMMON_OBJ   := $(PROG_COMMON_SRC:.c=.o)
 FSVERITY_PROG_OBJ := $(PROG_COMMON_OBJ)		\
 		     programs/cmd_digest.o	\
 		     programs/cmd_sign.o	\
 		     programs/fsverity.o
 ifneq ($(MINGW),1)
 FSVERITY_PROG_OBJ += \
 		     programs/cmd_enable.o	\
 		     programs/cmd_measure.o
 endif
 TEST_PROG_SRC     := $(wildcard programs/test_*.c)
 TEST_PROGRAMS     := $(TEST_PROG_SRC:programs/%.c=%$(EXEEXT))

 # Compile program object files
 $(ALL_PROG_OBJ): %.o: %.c $(ALL_PROG_HEADERS) .build-config
 	$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(CFLAGS) $<

 # Link the fsverity program
 ifdef USE_SHARED_LIB
 $(FSVERITY): $(FSVERITY_PROG_OBJ) libfsverity.so
 	$(QUIET_CCLD) $(CC) -o $@ $(FSVERITY_PROG_OBJ) \
 		$(CFLAGS) $(LDFLAGS) -L. -lfsverity
 else
 $(FSVERITY): $(FSVERITY_PROG_OBJ) libfsverity.a
 	$(QUIET_CCLD) $(CC) -o $@ $+ $(CFLAGS) $(LDFLAGS) $(LDLIBS)
 endif

 DEFAULT_TARGETS += $(FSVERITY)

 # Link the test programs
 $(TEST_PROGRAMS): %$(EXEEXT): programs/%.o $(PROG_COMMON_OBJ) libfsverity.a
 	$(QUIET_CCLD) $(CC) -o $@ $+ $(CFLAGS) $(LDFLAGS) $(LDLIBS)

 ##############################################################################

 SPECIAL_TARGETS := all test_programs check install uninstall help clean

 FORCE:

 .PHONY: $(SPECIAL_TARGETS) FORCE

 .DEFAULT_GOAL = all

 all:$(DEFAULT_TARGETS)

 test_programs:$(TEST_PROGRAMS)

 # This just runs some quick, portable tests.  Use scripts/run-tests.sh if you
 # want to run the full tests.
 check:$(FSVERITY) test_programs
 	for prog in $(TEST_PROGRAMS); do \
 		$(TEST_WRAPPER_PROG) ./$$prog || exit 1; \
 	done
 	$(RUN_FSVERITY) --help > /dev/null
 	$(RUN_FSVERITY) --version > /dev/null
 	$(RUN_FSVERITY) sign $(FSVERITY) fsverity.sig \
 		--key=testdata/key.pem --cert=testdata/cert.pem > /dev/null
 	$(RUN_FSVERITY) sign $(FSVERITY) fsverity.sig --hash=sha512 \
 		--block-size=512 --salt=12345678 \
 		--key=testdata/key.pem --cert=testdata/cert.pem > /dev/null
 	$(RUN_FSVERITY) digest $(FSVERITY) --hash=sha512 \
 		--block-size=512 --salt=12345678 > /dev/null
 	rm -f fsverity.sig
 	@echo "All tests passed!"

 install:all
 	install -d $(DESTDIR)$(LIBDIR)/pkgconfig $(DESTDIR)$(INCDIR) $(DESTDIR)$(BINDIR)
 	install -m755 $(FSVERITY) $(DESTDIR)$(BINDIR)
 	install -m644 libfsverity.a $(DESTDIR)$(LIBDIR)
 	install -m755 libfsverity.so.$(SOVERSION) $(DESTDIR)$(LIBDIR)
 	ln -sf libfsverity.so.$(SOVERSION) $(DESTDIR)$(LIBDIR)/libfsverity.so
 	install -m644 include/libfsverity.h $(DESTDIR)$(INCDIR)
 	sed -e "s|@PREFIX@|$(PREFIX)|" \
 		-e "s|@LIBDIR@|$(LIBDIR)|" \
 		-e "s|@INCDIR@|$(INCDIR)|" \
 		lib/libfsverity.pc.in \
 		> $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc
 	chmod 644 $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc

 uninstall:
 	rm -f $(DESTDIR)$(BINDIR)/$(FSVERITY)
 	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.a
 	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.so.$(SOVERSION)
 	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.so
 	rm -f $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc
 	rm -f $(DESTDIR)$(INCDIR)/libfsverity.h

 help:
 	@echo "Available targets:"
 	@echo "------------------"
 	@for target in $(DEFAULT_TARGETS) $(TEST_PROGRAMS) $(SPECIAL_TARGETS); \
 	do \
 		echo $$target; \
 	done

 clean:
 	rm -f $(DEFAULT_TARGETS) $(TEST_PROGRAMS) \
 		lib/*.o programs/*.o .build-config fsverity.sig
	# SPDX-License-Identifier: MIT
	# Copyright 2020 Google LLC
	#
	# Use of this source code is governed by an MIT-style
	# license that can be found in the LICENSE file or at
	# https://opensource.org/licenses/MIT.


	# Use 'make help' to list available targets.
	#
	# Define V=1 to enable "verbose" mode, showing all executed commands.
	#
	# Define USE_SHARED_LIB=1 to link the fsverity binary to the shared library
	# libfsverity.so rather than to the static library libfsverity.a.
	#
	# Define PREFIX to override the installation prefix, like './configure --prefix'
	# in autotools-based projects (default: /usr/local)
	#
	# Define BINDIR to override where to install binaries, like './configure
	# --bindir' in autotools-based projects (default: PREFIX/bin)
	#
	# Define INCDIR to override where to install headers, like './configure
	# --includedir' in autotools-based projects (default: PREFIX/include)
	#
	# Define LIBDIR to override where to install libraries, like './configure
	# --libdir' in autotools-based projects (default: PREFIX/lib)
	#
	# Define DESTDIR to override the installation destination directory
	# (default: empty string)
	#
	# You can also specify custom CC, CFLAGS, CPPFLAGS, LDFLAGS, and/or PKGCONF.
	#
	##############################################################################

	cc-option = $(shell if $(CC) $(1) -c -x c /dev/null -o /dev/null > /dev/null 2>&1; \
	then echo $(1); fi)

	# Support building with MinGW for minimal Windows fsverity.exe, but not for
	# libfsverity. fsverity.exe will be statically linked.
	ifneq ($(findstring -mingw,$(shell $(CC) -dumpmachine 2>/dev/null)),)
	MINGW = 1
	endif

	CFLAGS ?= -O2

	override CFLAGS := -Wall -Wundef \
	$(call cc-option,-Wdeclaration-after-statement) \
	$(call cc-option,-Wimplicit-fallthrough) \
	$(call cc-option,-Wmissing-field-initializers) \
	$(call cc-option,-Wmissing-prototypes) \
	$(call cc-option,-Wstrict-prototypes) \
	$(call cc-option,-Wunused-parameter) \
	$(call cc-option,-Wvla) \
	$(CFLAGS)

	override CPPFLAGS := -Iinclude -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE $(CPPFLAGS)

	ifneq ($(V),1)
	QUIET_CC = @echo ' CC ' $@;
	QUIET_CCLD = @echo ' CCLD ' $@;
	QUIET_AR = @echo ' AR ' $@;
	QUIET_LN = @echo ' LN ' $@;
	QUIET_GEN = @echo ' GEN ' $@;
	endif
	USE_SHARED_LIB ?=
	PREFIX ?= /usr/local
	BINDIR ?= $(PREFIX)/bin
	INCDIR ?= $(PREFIX)/include
	LIBDIR ?= $(PREFIX)/lib
	DESTDIR ?=
	ifneq ($(MINGW),1)
	PKGCONF ?= pkg-config
	else
	PKGCONF := false
	EXEEXT := .exe
	endif
	FSVERITY := fsverity$(EXEEXT)

	# Rebuild if a user-specified setting that affects the build changed.
	.build-config: FORCE
	@flags=$$( \
	echo 'CC=$(CC)'; \
	echo 'CFLAGS=$(CFLAGS)'; \
	echo 'CPPFLAGS=$(CPPFLAGS)'; \
	echo 'LDFLAGS=$(LDFLAGS)'; \
	echo 'LDLIBS=$(LDLIBS)'; \
	echo 'USE_SHARED_LIB=$(USE_SHARED_LIB)'; \
	); \
	if [ "$$flags" != "`cat $@ 2>/dev/null`" ]; then \
	[ -e $@ ] && echo "Rebuilding due to new settings"; \
	echo "$$flags" > $@; \
	fi

	DEFAULT_TARGETS :=
	COMMON_HEADERS := $(wildcard common/*.h)
	LDLIBS := $(shell "$(PKGCONF)" libcrypto --libs 2>/dev/null \|\| echo -lcrypto)
	CFLAGS += $(shell "$(PKGCONF)" libcrypto --cflags 2>/dev/null \|\| echo)

	# If we are dynamically linking, when running tests we need to override
	# LD_LIBRARY_PATH as no RPATH is set
	ifdef USE_SHARED_LIB
	RUN_FSVERITY = LD_LIBRARY_PATH=./ $(TEST_WRAPPER_PROG) ./$(FSVERITY)
	else
	RUN_FSVERITY = $(TEST_WRAPPER_PROG) ./$(FSVERITY)
	endif

	##############################################################################

	#### Library

	SOVERSION := 0
	LIB_CFLAGS := $(CFLAGS) -fvisibility=hidden
	LIB_SRC := $(wildcard lib/*.c)
	ifeq ($(MINGW),1)
	LIB_SRC := $(filter-out lib/enable.c,${LIB_SRC})
	endif
	LIB_HEADERS := $(wildcard lib/*.h) $(COMMON_HEADERS)
	STATIC_LIB_OBJ := $(LIB_SRC:.c=.o)
	SHARED_LIB_OBJ := $(LIB_SRC:.c=.shlib.o)

	# Compile static library object files
	$(STATIC_LIB_OBJ): %.o: %.c $(LIB_HEADERS) .build-config
	$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(LIB_CFLAGS) $<

	# Compile shared library object files
	$(SHARED_LIB_OBJ): %.shlib.o: %.c $(LIB_HEADERS) .build-config
	$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(LIB_CFLAGS) -fPIC $<

	# Create static library
	libfsverity.a:$(STATIC_LIB_OBJ)
	$(QUIET_AR) $(AR) cr $@ $+

	DEFAULT_TARGETS += libfsverity.a

	# Create shared library
	libfsverity.so.$(SOVERSION):$(SHARED_LIB_OBJ)
	$(QUIET_CCLD) $(CC) -o $@ -Wl,-soname=$@ -shared $+ \
	$(CFLAGS) $(LDFLAGS) $(LDLIBS)

	DEFAULT_TARGETS += libfsverity.so.$(SOVERSION)

	# Create the symlink libfsverity.so => libfsverity.so.$(SOVERSION)
	libfsverity.so:libfsverity.so.$(SOVERSION)
	$(QUIET_LN) ln -sf $+ $@

	DEFAULT_TARGETS += libfsverity.so

	##############################################################################

	#### Programs

	ALL_PROG_SRC := $(wildcard programs/*.c)
	ALL_PROG_OBJ := $(ALL_PROG_SRC:.c=.o)
	ALL_PROG_HEADERS := $(wildcard programs/*.h) $(COMMON_HEADERS)
	PROG_COMMON_SRC := programs/utils.c
	PROG_COMMON_OBJ := $(PROG_COMMON_SRC:.c=.o)
	FSVERITY_PROG_OBJ := $(PROG_COMMON_OBJ) \
	programs/cmd_digest.o \
	programs/cmd_sign.o \
	programs/fsverity.o
	ifneq ($(MINGW),1)
	FSVERITY_PROG_OBJ += \
	programs/cmd_enable.o \
	programs/cmd_measure.o
	endif
	TEST_PROG_SRC := $(wildcard programs/test_*.c)
	TEST_PROGRAMS := $(TEST_PROG_SRC:programs/%.c=%$(EXEEXT))

	# Compile program object files
	$(ALL_PROG_OBJ): %.o: %.c $(ALL_PROG_HEADERS) .build-config
	$(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(CFLAGS) $<

	# Link the fsverity program
	ifdef USE_SHARED_LIB
	$(FSVERITY): $(FSVERITY_PROG_OBJ) libfsverity.so
	$(QUIET_CCLD) $(CC) -o $@ $(FSVERITY_PROG_OBJ) \
	$(CFLAGS) $(LDFLAGS) -L. -lfsverity
	else
	$(FSVERITY): $(FSVERITY_PROG_OBJ) libfsverity.a
	$(QUIET_CCLD) $(CC) -o $@ $+ $(CFLAGS) $(LDFLAGS) $(LDLIBS)
	endif

	DEFAULT_TARGETS += $(FSVERITY)

	# Link the test programs
	$(TEST_PROGRAMS): %$(EXEEXT): programs/%.o $(PROG_COMMON_OBJ) libfsverity.a
	$(QUIET_CCLD) $(CC) -o $@ $+ $(CFLAGS) $(LDFLAGS) $(LDLIBS)

	##############################################################################

	SPECIAL_TARGETS := all test_programs check install uninstall help clean

	FORCE:

	.PHONY: $(SPECIAL_TARGETS) FORCE

	.DEFAULT_GOAL = all

	all:$(DEFAULT_TARGETS)

	test_programs:$(TEST_PROGRAMS)

	# This just runs some quick, portable tests. Use scripts/run-tests.sh if you
	# want to run the full tests.
	check:$(FSVERITY) test_programs
	for prog in $(TEST_PROGRAMS); do \
	$(TEST_WRAPPER_PROG) ./$$prog \|\| exit 1; \
	done
	$(RUN_FSVERITY) --help > /dev/null
	$(RUN_FSVERITY) --version > /dev/null
	$(RUN_FSVERITY) sign $(FSVERITY) fsverity.sig \
	--key=testdata/key.pem --cert=testdata/cert.pem > /dev/null
	$(RUN_FSVERITY) sign $(FSVERITY) fsverity.sig --hash=sha512 \
	--block-size=512 --salt=12345678 \
	--key=testdata/key.pem --cert=testdata/cert.pem > /dev/null
	$(RUN_FSVERITY) digest $(FSVERITY) --hash=sha512 \
	--block-size=512 --salt=12345678 > /dev/null
	rm -f fsverity.sig
	@echo "All tests passed!"

	install:all
	install -d $(DESTDIR)$(LIBDIR)/pkgconfig $(DESTDIR)$(INCDIR) $(DESTDIR)$(BINDIR)
	install -m755 $(FSVERITY) $(DESTDIR)$(BINDIR)
	install -m644 libfsverity.a $(DESTDIR)$(LIBDIR)
	install -m755 libfsverity.so.$(SOVERSION) $(DESTDIR)$(LIBDIR)
	ln -sf libfsverity.so.$(SOVERSION) $(DESTDIR)$(LIBDIR)/libfsverity.so
	install -m644 include/libfsverity.h $(DESTDIR)$(INCDIR)
	sed -e "s\|@PREFIX@\|$(PREFIX)\|" \
	-e "s\|@LIBDIR@\|$(LIBDIR)\|" \
	-e "s\|@INCDIR@\|$(INCDIR)\|" \
	lib/libfsverity.pc.in \
	> $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc
	chmod 644 $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc

	uninstall:
	rm -f $(DESTDIR)$(BINDIR)/$(FSVERITY)
	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.a
	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.so.$(SOVERSION)
	rm -f $(DESTDIR)$(LIBDIR)/libfsverity.so
	rm -f $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc
	rm -f $(DESTDIR)$(INCDIR)/libfsverity.h

	help:
	@echo "Available targets:"
	@echo "------------------"
	@for target in $(DEFAULT_TARGETS) $(TEST_PROGRAMS) $(SPECIAL_TARGETS); \
	do \
	echo $$target; \
	done

	clean:
	rm -f $(DEFAULT_TARGETS) $(TEST_PROGRAMS) \
	lib/.o programs/.o .build-config fsverity.sig