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# 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