HardenedBSD/lib/libgcc_eh/Makefile.inc
Dimitry Andric cc0b883028 After r364423, which ensures the callbacks that dl_iterate_phdr(3)
performs are protected by an exclusive lock, even for statically linked
programs, it is safe to re-enable libunwind's FrameHeaderCache, which I
temporarily disabled in r364263.

Meanwhile upstream has also used the _LIBUNWIND_USE_FRAME_HEADER_CACHE
for this purpose, so the only thing needed is to add this as a
compile-time command line flag.

While here, reformat the CFLAGS lines a little bit.

MFC after:	6 weeks
X-MFC-With:	r364284, r364423
2020-08-25 20:07:11 +00:00

40 lines
1.2 KiB
Makefile

# $FreeBSD$
COMPILERRTDIR= ${SRCTOP}/contrib/llvm-project/compiler-rt
UNWINDINCDIR= ${SRCTOP}/contrib/llvm-project/libunwind/include
UNWINDSRCDIR= ${SRCTOP}/contrib/llvm-project/libunwind/src
STATIC_CFLAGS+=${PICFLAG} -fvisibility=hidden -DVISIBILITY_HIDDEN
.PATH: ${COMPILERRTDIR}/lib/builtins
.PATH: ${UNWINDSRCDIR}
SRCS_EXC+= gcc_personality_v0.c
SRCS_EXC+= Unwind-EHABI.cpp
SRCS_EXC+= Unwind-sjlj.c
SRCS_EXC+= UnwindLevel1-gcc-ext.c
SRCS_EXC+= UnwindLevel1.c
SRCS_EXC+= UnwindRegistersRestore.S
SRCS_EXC+= UnwindRegistersSave.S
SRCS_EXC+= libunwind.cpp
SRCS+= ${SRCS_EXC}
.for file in ${SRCS_EXC:M*.c}
CFLAGS.${file}+= -fno-exceptions -funwind-tables
.endfor
.for file in ${SRCS_EXC:M*.cpp}
CXXFLAGS.${file}+= -fno-exceptions -funwind-tables
.endfor
CFLAGS+= -I${UNWINDINCDIR}
CFLAGS+= -I${.CURDIR}
CFLAGS+= -D_LIBUNWIND_IS_NATIVE_ONLY
CFLAGS+= -D_LIBUNWIND_USE_FRAME_HEADER_CACHE
CXXFLAGS+= -fno-rtti
CXXSTD?= c++11
STATIC_CXXFLAGS+= -fvisibility=hidden -fPIC
# Probably need to just move this earlier or use CXXFLAGS
.if ${MK_DIRDEPS_BUILD} == "yes"
# Avoid dependency on lib/libc++
CFLAGS+= -isystem ${SRCTOP}/contrib/llvm-project/libcxx/include -nostdinc++
.endif