When a thread exits, _Unwind_ForcedUnwind() is used to walk up stack frames executing pending cleanups pushed by pthread_cleanup_push(). The cleanups are popped by thread_unwind_stop() which is passed as a callback function to _Unwind_ForcedUnwind(). LLVM's libunwind uses a different function type for the callback on 32-bit ARM relative to all other platforms. The previous unwind.h header (as well as the unwind.h from libcxxrt) use the non-ARM type on all platforms, so this has likely been broken on 32-bit arm since it switched to using LLVM's libunwind. For now, just disable stack unwinding on 32-bit arm to unbreak the build until a proper fix is tested.
83 lines
2.1 KiB
Makefile
83 lines
2.1 KiB
Makefile
# $FreeBSD$
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#
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# All library objects contain FreeBSD revision strings by default; they may be
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# excluded as a space-saving measure. To produce a library that does
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# not contain these strings, add -DSTRIP_FBSDID (see <sys/cdefs.h>) to CFLAGS
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# below.
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PACKAGE= clibs
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SHLIBDIR?= /lib
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.include <src.opts.mk>
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MK_SSP= no
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LIB=thr
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SHLIB_MAJOR= 3
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NO_WTHREAD_SAFETY=1
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NO_WCAST_ALIGN.gcc=1 # for gcc 4.2
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CFLAGS+=-DPTHREAD_KERNEL
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CFLAGS+=-I${SRCTOP}/lib/libc/include
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CFLAGS+=-I${SRCTOP}/lib/libc/${MACHINE_CPUARCH}
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CFLAGS+=-I${.CURDIR}/thread
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CFLAGS+=-I${.CURDIR}/arch/${MACHINE_CPUARCH}/include
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CFLAGS+=-I${.CURDIR}/sys
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CFLAGS+=-I${SRCTOP}/libexec/rtld-elf
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CFLAGS+=-I${SRCTOP}/libexec/rtld-elf/${MACHINE_CPUARCH}
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CFLAGS+=-I${SRCTOP}/lib/libthread_db
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CFLAGS.thr_stack.c+= -Wno-cast-align
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CFLAGS.rtld_malloc.c+= -Wno-cast-align
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CFLAGS.thr_symbols.c+= -Wno-missing-variable-declarations
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.if ${MK_ASAN} != "no"
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# False-positive ASAN error claiming the local "struct sigaction act;" is
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# overflowed by handle_signal() reading from the ucontext_t argument. This
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# could be caused by ASAN not treating this function as a signal handler.
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CFLAGS.thr_sig.c+= -fno-sanitize=address
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.endif
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.if ${MACHINE_CPUARCH} == "arm"
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NO_THREAD_UNWIND_STACK= yes
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.endif
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.ifndef NO_THREAD_UNWIND_STACK
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CFLAGS+=-fexceptions
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CFLAGS+=-D_PTHREAD_FORCED_UNWIND
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.endif
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LDFLAGS+=-Wl,-znodelete
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VERSION_DEF=${SRCTOP}/lib/libc/Versions.def
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SYMBOL_MAPS=${.CURDIR}/pthread.map
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MAN= libthr.3
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# enable extra internal consistency checks
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CFLAGS+=-D_PTHREADS_INVARIANTS
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PRECIOUSLIB=
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.PATH: ${.CURDIR}/arch/${MACHINE_CPUARCH}/${MACHINE_CPUARCH}
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.PATH: ${SRCTOP}/libexec/rtld-elf
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.if exists(${.CURDIR}/arch/${MACHINE_CPUARCH}/Makefile.inc)
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.include "${.CURDIR}/arch/${MACHINE_CPUARCH}/Makefile.inc"
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.endif
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.include "${.CURDIR}/sys/Makefile.inc"
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.include "${.CURDIR}/thread/Makefile.inc"
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SRCS+= rtld_malloc.c
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.if ${MK_INSTALLLIB} != "no"
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SYMLINKS+=lib${LIB}.a ${LIBDIR}/libpthread.a
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.endif
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.if !defined(NO_PIC)
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SYMLINKS+=lib${LIB}.so ${LIBDIR}/libpthread.so
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.endif
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.if ${MK_PROFILE} != "no"
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SYMLINKS+=lib${LIB}_p.a ${LIBDIR}/libpthread_p.a
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.endif
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HAS_TESTS=
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SUBDIR.${MK_TESTS}+= tests
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.include <bsd.lib.mk>
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