1# SPDX-License-Identifier: MIT 2# Copyright 2020 Google LLC 3# 4# Use of this source code is governed by an MIT-style 5# license that can be found in the LICENSE file or at 6# https://opensource.org/licenses/MIT. 7 8 9# Use 'make help' to list available targets. 10# 11# Define V=1 to enable "verbose" mode, showing all executed commands. 12# 13# Define USE_SHARED_LIB=1 to link the fsverity binary to the shared library 14# libfsverity.so rather than to the static library libfsverity.a. 15# 16# Define PREFIX to override the installation prefix, like './configure --prefix' 17# in autotools-based projects (default: /usr/local) 18# 19# Define BINDIR to override where to install binaries, like './configure 20# --bindir' in autotools-based projects (default: PREFIX/bin) 21# 22# Define INCDIR to override where to install headers, like './configure 23# --includedir' in autotools-based projects (default: PREFIX/include) 24# 25# Define LIBDIR to override where to install libraries, like './configure 26# --libdir' in autotools-based projects (default: PREFIX/lib) 27# 28# Define DESTDIR to override the installation destination directory 29# (default: empty string) 30# 31# You can also specify custom CC, CFLAGS, CPPFLAGS, LDFLAGS, and/or PKGCONF. 32# 33############################################################################## 34 35cc-option = $(shell if $(CC) $(1) -c -x c /dev/null -o /dev/null > /dev/null 2>&1; \ 36 then echo $(1); fi) 37 38# Support building with MinGW for minimal Windows fsverity.exe, but not for 39# libfsverity. fsverity.exe will be statically linked. 40ifneq ($(findstring -mingw,$(shell $(CC) -dumpmachine 2>/dev/null)),) 41MINGW = 1 42endif 43 44CFLAGS ?= -O2 45 46override CFLAGS := -Wall -Wundef \ 47 $(call cc-option,-Wdeclaration-after-statement) \ 48 $(call cc-option,-Wimplicit-fallthrough) \ 49 $(call cc-option,-Wmissing-field-initializers) \ 50 $(call cc-option,-Wmissing-prototypes) \ 51 $(call cc-option,-Wstrict-prototypes) \ 52 $(call cc-option,-Wunused-parameter) \ 53 $(call cc-option,-Wvla) \ 54 $(CFLAGS) 55 56override CPPFLAGS := -Iinclude -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE $(CPPFLAGS) 57 58ifneq ($(V),1) 59QUIET_CC = @echo ' CC ' $@; 60QUIET_CCLD = @echo ' CCLD ' $@; 61QUIET_AR = @echo ' AR ' $@; 62QUIET_LN = @echo ' LN ' $@; 63QUIET_GEN = @echo ' GEN ' $@; 64endif 65USE_SHARED_LIB ?= 66PREFIX ?= /usr/local 67BINDIR ?= $(PREFIX)/bin 68INCDIR ?= $(PREFIX)/include 69LIBDIR ?= $(PREFIX)/lib 70DESTDIR ?= 71ifneq ($(MINGW),1) 72PKGCONF ?= pkg-config 73else 74PKGCONF := false 75EXEEXT := .exe 76endif 77FSVERITY := fsverity$(EXEEXT) 78 79# Rebuild if a user-specified setting that affects the build changed. 80.build-config: FORCE 81 @flags=$$( \ 82 echo 'CC=$(CC)'; \ 83 echo 'CFLAGS=$(CFLAGS)'; \ 84 echo 'CPPFLAGS=$(CPPFLAGS)'; \ 85 echo 'LDFLAGS=$(LDFLAGS)'; \ 86 echo 'LDLIBS=$(LDLIBS)'; \ 87 echo 'USE_SHARED_LIB=$(USE_SHARED_LIB)'; \ 88 ); \ 89 if [ "$$flags" != "`cat $@ 2>/dev/null`" ]; then \ 90 [ -e $@ ] && echo "Rebuilding due to new settings"; \ 91 echo "$$flags" > $@; \ 92 fi 93 94DEFAULT_TARGETS := 95COMMON_HEADERS := $(wildcard common/*.h) 96LDLIBS := $(shell "$(PKGCONF)" libcrypto --libs 2>/dev/null || echo -lcrypto) 97CFLAGS += $(shell "$(PKGCONF)" libcrypto --cflags 2>/dev/null || echo) 98 99# If we are dynamically linking, when running tests we need to override 100# LD_LIBRARY_PATH as no RPATH is set 101ifdef USE_SHARED_LIB 102RUN_FSVERITY = LD_LIBRARY_PATH=./ $(TEST_WRAPPER_PROG) ./$(FSVERITY) 103else 104RUN_FSVERITY = $(TEST_WRAPPER_PROG) ./$(FSVERITY) 105endif 106 107############################################################################## 108 109#### Library 110 111SOVERSION := 0 112LIB_CFLAGS := $(CFLAGS) -fvisibility=hidden 113LIB_SRC := $(wildcard lib/*.c) 114ifeq ($(MINGW),1) 115LIB_SRC := $(filter-out lib/enable.c,${LIB_SRC}) 116endif 117LIB_HEADERS := $(wildcard lib/*.h) $(COMMON_HEADERS) 118STATIC_LIB_OBJ := $(LIB_SRC:.c=.o) 119SHARED_LIB_OBJ := $(LIB_SRC:.c=.shlib.o) 120 121# Compile static library object files 122$(STATIC_LIB_OBJ): %.o: %.c $(LIB_HEADERS) .build-config 123 $(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(LIB_CFLAGS) $< 124 125# Compile shared library object files 126$(SHARED_LIB_OBJ): %.shlib.o: %.c $(LIB_HEADERS) .build-config 127 $(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(LIB_CFLAGS) -fPIC $< 128 129# Create static library 130libfsverity.a:$(STATIC_LIB_OBJ) 131 $(QUIET_AR) $(AR) cr $@ $+ 132 133DEFAULT_TARGETS += libfsverity.a 134 135# Create shared library 136libfsverity.so.$(SOVERSION):$(SHARED_LIB_OBJ) 137 $(QUIET_CCLD) $(CC) -o $@ -Wl,-soname=$@ -shared $+ \ 138 $(CFLAGS) $(LDFLAGS) $(LDLIBS) 139 140DEFAULT_TARGETS += libfsverity.so.$(SOVERSION) 141 142# Create the symlink libfsverity.so => libfsverity.so.$(SOVERSION) 143libfsverity.so:libfsverity.so.$(SOVERSION) 144 $(QUIET_LN) ln -sf $+ $@ 145 146DEFAULT_TARGETS += libfsverity.so 147 148############################################################################## 149 150#### Programs 151 152ALL_PROG_SRC := $(wildcard programs/*.c) 153ALL_PROG_OBJ := $(ALL_PROG_SRC:.c=.o) 154ALL_PROG_HEADERS := $(wildcard programs/*.h) $(COMMON_HEADERS) 155PROG_COMMON_SRC := programs/utils.c 156PROG_COMMON_OBJ := $(PROG_COMMON_SRC:.c=.o) 157FSVERITY_PROG_OBJ := $(PROG_COMMON_OBJ) \ 158 programs/cmd_digest.o \ 159 programs/cmd_sign.o \ 160 programs/fsverity.o 161ifneq ($(MINGW),1) 162FSVERITY_PROG_OBJ += \ 163 programs/cmd_enable.o \ 164 programs/cmd_measure.o 165endif 166TEST_PROG_SRC := $(wildcard programs/test_*.c) 167TEST_PROGRAMS := $(TEST_PROG_SRC:programs/%.c=%$(EXEEXT)) 168 169# Compile program object files 170$(ALL_PROG_OBJ): %.o: %.c $(ALL_PROG_HEADERS) .build-config 171 $(QUIET_CC) $(CC) -o $@ -c $(CPPFLAGS) $(CFLAGS) $< 172 173# Link the fsverity program 174ifdef USE_SHARED_LIB 175$(FSVERITY): $(FSVERITY_PROG_OBJ) libfsverity.so 176 $(QUIET_CCLD) $(CC) -o $@ $(FSVERITY_PROG_OBJ) \ 177 $(CFLAGS) $(LDFLAGS) -L. -lfsverity 178else 179$(FSVERITY): $(FSVERITY_PROG_OBJ) libfsverity.a 180 $(QUIET_CCLD) $(CC) -o $@ $+ $(CFLAGS) $(LDFLAGS) $(LDLIBS) 181endif 182 183DEFAULT_TARGETS += $(FSVERITY) 184 185# Link the test programs 186$(TEST_PROGRAMS): %$(EXEEXT): programs/%.o $(PROG_COMMON_OBJ) libfsverity.a 187 $(QUIET_CCLD) $(CC) -o $@ $+ $(CFLAGS) $(LDFLAGS) $(LDLIBS) 188 189############################################################################## 190 191SPECIAL_TARGETS := all test_programs check install uninstall help clean 192 193FORCE: 194 195.PHONY: $(SPECIAL_TARGETS) FORCE 196 197.DEFAULT_GOAL = all 198 199all:$(DEFAULT_TARGETS) 200 201test_programs:$(TEST_PROGRAMS) 202 203# This just runs some quick, portable tests. Use scripts/run-tests.sh if you 204# want to run the full tests. 205check:$(FSVERITY) test_programs 206 for prog in $(TEST_PROGRAMS); do \ 207 $(TEST_WRAPPER_PROG) ./$$prog || exit 1; \ 208 done 209 $(RUN_FSVERITY) --help > /dev/null 210 $(RUN_FSVERITY) --version > /dev/null 211 $(RUN_FSVERITY) sign $(FSVERITY) fsverity.sig \ 212 --key=testdata/key.pem --cert=testdata/cert.pem > /dev/null 213 $(RUN_FSVERITY) sign $(FSVERITY) fsverity.sig --hash=sha512 \ 214 --block-size=512 --salt=12345678 \ 215 --key=testdata/key.pem --cert=testdata/cert.pem > /dev/null 216 $(RUN_FSVERITY) digest $(FSVERITY) --hash=sha512 \ 217 --block-size=512 --salt=12345678 > /dev/null 218 rm -f fsverity.sig 219 @echo "All tests passed!" 220 221install:all 222 install -d $(DESTDIR)$(LIBDIR)/pkgconfig $(DESTDIR)$(INCDIR) $(DESTDIR)$(BINDIR) 223 install -m755 $(FSVERITY) $(DESTDIR)$(BINDIR) 224 install -m644 libfsverity.a $(DESTDIR)$(LIBDIR) 225 install -m755 libfsverity.so.$(SOVERSION) $(DESTDIR)$(LIBDIR) 226 ln -sf libfsverity.so.$(SOVERSION) $(DESTDIR)$(LIBDIR)/libfsverity.so 227 install -m644 include/libfsverity.h $(DESTDIR)$(INCDIR) 228 sed -e "s|@PREFIX@|$(PREFIX)|" \ 229 -e "s|@LIBDIR@|$(LIBDIR)|" \ 230 -e "s|@INCDIR@|$(INCDIR)|" \ 231 lib/libfsverity.pc.in \ 232 > $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc 233 chmod 644 $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc 234 235uninstall: 236 rm -f $(DESTDIR)$(BINDIR)/$(FSVERITY) 237 rm -f $(DESTDIR)$(LIBDIR)/libfsverity.a 238 rm -f $(DESTDIR)$(LIBDIR)/libfsverity.so.$(SOVERSION) 239 rm -f $(DESTDIR)$(LIBDIR)/libfsverity.so 240 rm -f $(DESTDIR)$(LIBDIR)/pkgconfig/libfsverity.pc 241 rm -f $(DESTDIR)$(INCDIR)/libfsverity.h 242 243help: 244 @echo "Available targets:" 245 @echo "------------------" 246 @for target in $(DEFAULT_TARGETS) $(TEST_PROGRAMS) $(SPECIAL_TARGETS); \ 247 do \ 248 echo $$target; \ 249 done 250 251clean: 252 rm -f $(DEFAULT_TARGETS) $(TEST_PROGRAMS) \ 253 lib/*.o programs/*.o .build-config fsverity.sig 254