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https://github.com/wolfcw/libfaketime.git
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0277016bb5
Particularly we need -fptrauth-calls, so when pthread_once indirectly calls ftpl_really_init, it won't fail PAC.
111 lines
4.1 KiB
Makefile
111 lines
4.1 KiB
Makefile
#
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# Notes:
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#
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# * Compilation Defines:
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#
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# MACOS_DYLD_INTERPOSE
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# - Use dlyd interposing instead of name-based function interception
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# (required since macOS Monterey)
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#
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# FAKE_SLEEP
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# - Also intercept sleep(), nanosleep(), usleep(), alarm(), [p]poll()
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#
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# FAKE_SETTIME
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# - Intercept clock_settime(), settimeofday(), and adjtime()
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#
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# FAKE_PID
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# - Enable faked values for getpid() calls through FAKETIME_FAKEPID
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#
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# FAKE_RANDOM
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# - Intercept getentropy(). Dangerous for production use.
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# See README about FAKE_RANDOM.
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#
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# FAKE_STAT
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# - Enables time faking also for files' timestamps.
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#
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# FAKE_FILE_TIMESTAMPS, FAKE_UTIME
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# - Enables time faking for the utime* functions. If enabled via
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# FAKE_FILE_TIMESTAMPS, the faking is opt-in at runtime using
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# with the FAKE_UTIME environment variable. If enabled via
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# FAKE_UTIME, the faking is opt-out at runtime. Requires FAKE_STAT.
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#
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# PTHREAD
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# - Define this to enable multithreading support.
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#
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# PTHREAD_SINGLETHREADED_TIME
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# - Define this if you want to single-thread time() ... there ARE
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# possible caching side-effects in a multithreaded environment
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# without this, but the performance impact may require you to
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# try it unsynchronized.
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#
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# * Compilation addition: second libMT target added for building the pthread-
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# enabled library as a separate library
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#
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# * Compilation switch change: previous versions compiled using '-nostartfiles'
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# This is no longer the case since there is a 'startup' constructor for the library
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# which is used to activate the start-at times when specified. This also initializes
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# the dynamic disabling of the FAKE_STAT calls.
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#
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# By default, libfaketime will be compiled for your system's default architecture.
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# To build for a different architecture, add -arch flags to CFLAGS and LDFLAGS.
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#
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# default to clang to support thread local variables
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CC ?= clang
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INSTALL ?= install
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PREFIX ?= /usr/local
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CFLAGS += -DFAKE_SLEEP -DFAKE_INTERNAL_CALLS -DPREFIX='"'${PREFIX}'"' $(FAKETIME_COMPILE_CFLAGS) -DMACOS_DYLD_INTERPOSE -DFAKE_SETTIME
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LIB_LDFLAGS += -dynamiclib -current_version 0.9.11 -compatibility_version 0.7
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# From macOS 13 onwards, system binaries are compiled against the new arm64e ABI on Apple Silicon.
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# These arm64e binaries enforce Pointer Authentication Code (PAC), and will refuse to run with
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# "unprotected" arm64 libraries. Meanwhile, older platforms might not recognize the new arm64e ABI.
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# Therefore, we now compile for two ABIs at the same time, producing a fat library of arm64e and arm64,
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# so in the end the OS gets to pick which architecture it wants at runtime.
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# In addition, we need to enable signing and authentication of indirect calls (-fptrauth-calls);
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# otherwise in ftpl_init, pthread_once will indirectly call ftpl_really_init, which then fail PAC.
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# Ideally this should be a compiler default for the arm64e ABI, but apparently not.
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ARCH := $(shell uname -m)
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ifeq ($(ARCH),arm64)
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CFLAGS += -arch arm64e -arch arm64
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CFLAGS += -fptrauth-calls -fptrauth-returns
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endif
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SONAME = 1
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LIBS = libfaketime.${SONAME}.dylib
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BINS = faketime
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all: ${LIBS} ${BINS}
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libfaketime.${SONAME}.dylib: libfaketime.c
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${CC} -o $@ ${CFLAGS} ${LDFLAGS} ${LIB_LDFLAGS} -install_name ${PREFIX}/lib/faketime/$@ $<
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faketime: faketime.c
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${CC} -o $@ ${CFLAGS} ${LDFLAGS} $<
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clean:
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@rm -f ${OBJ} ${LIBS} ${BINS}
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distclean: clean
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@echo
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install: ${LIBS} ${BINS}
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@echo
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@echo "Copying the faketime libraries to ${DESTDIR}${PREFIX}/lib/faketime and the faketime wrapper script to ${DESTDIR}${PREFIX}/bin ..."
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$(INSTALL) -dm0755 "${DESTDIR}${PREFIX}/lib/faketime/"
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$(INSTALL) -m0644 ${LIBS} "${DESTDIR}${PREFIX}/lib/faketime/"
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$(INSTALL) -dm0755 "${DESTDIR}${PREFIX}/bin"
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$(INSTALL) -m0755 faketime "${DESTDIR}${PREFIX}/bin/faketime"
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uninstall:
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for f in ${LIBS}; do rm -f "${DESTDIR}${PREFIX}/lib/faketime/$$f"; done
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rmdir "${DESTDIR}${PREFIX}/lib/faketime"
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rm -f "${DESTDIR}${PREFIX}/bin/faketime"
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.PHONY: all clean distclean install uninstall
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