mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-26 10:53:39 +01:00
ae5f5e1c02
The proposed change ("Fix building of llvm's unwind if gcc has been
also built") breaks the build with clang/llvm.
Tested with...
(
export SRCCONF=/dev/null WITH_CLANG=
cd gnu/lib/libgcc; make obj; make depend; make all
)
MFC after: 3 days
X-MFC with: r307689
Pointyhat to: bapt
Reported by: Jenkins, O. Hartmann <ohartman@zedat.fu-berlin.de>
Sponsored by: Dell EMC Isilon
413 lines
12 KiB
Makefile
413 lines
12 KiB
Makefile
# $FreeBSD$
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PACKAGE= clibs
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GCCDIR= ${.CURDIR}/../../../contrib/gcc
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GCCLIB= ${.CURDIR}/../../../contrib/gcclibs
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CCDIR= ${.CURDIR}/../../usr.bin/cc
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COMPILERRTDIR= ${.CURDIR}/../../../contrib/compiler-rt
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UNWINDINCDIR= ${.CURDIR}/../../../contrib/llvm/projects/libunwind/include
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UNWINDSRCDIR= ${.CURDIR}/../../../contrib/llvm/projects/libunwind/src
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SHLIB_NAME= libgcc_s.so.1
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SHLIBDIR?= /lib
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.include <src.opts.mk>
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#
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# libgcc is linked in last and thus cannot depend on ssp symbols coming
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# from earlier libraries. Disable stack protection for this library.
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#
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MK_SSP= no
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.include "${CCDIR}/Makefile.tgt"
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.include "${CCDIR}/cc_tools/Makefile.hdrs"
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.if ${TARGET_CPUARCH} == "arm"
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CFLAGS+= -DTARGET_ARM_EABI
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.endif
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.PATH: ${GCCDIR}/config/${GCC_CPU} ${GCCDIR}/config ${GCCDIR}
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CFLAGS+= -DIN_GCC -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED \
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-DHAVE_GTHR_DEFAULT \
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-I${GCCLIB}/include \
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-I${GCCDIR}/config -I${GCCDIR} -I. \
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-I${CCDIR}/cc_tools
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LDFLAGS+= -nodefaultlibs
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LIBADD+= c
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SOBJS= # added to below in various ways depending on TARGET_CPUARCH
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#---------------------------------------------------------------------------
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#
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# Library members defined in libgcc2.c.
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# When upgrading GCC, obtain the following list from mklibgcc.in
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#
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LIB2FUNCS= _muldi3 _negdi2 _lshrdi3 _ashldi3 _ashrdi3 \
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_cmpdi2 _ucmpdi2 \
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_enable_execute_stack _trampoline __main _absvsi2 _absvdi2 _addvsi3 \
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_addvdi3 _subvsi3 _subvdi3 _mulvsi3 _mulvdi3 _negvsi2 _negvdi2 _ctors \
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_ffssi2 _ffsdi2 _clz _clzsi2 _clzdi2 _ctzsi2 _ctzdi2 _popcount_tab \
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_popcountsi2 _popcountdi2 _paritysi2 _paritydi2 _powisf2 _powidf2 \
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_powixf2 _powitf2 _mulsc3 _muldc3 _mulxc3 _multc3 _divsc3 _divdc3 \
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_divxc3 _divtc3 _bswapsi2 _bswapdi2
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.if ${COMPILER_TYPE} != "clang" || ${TARGET_CPUARCH} != "arm"
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LIB2FUNCS+= _clear_cache
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.endif
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# The floating-point conversion routines that involve a single-word integer.
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.for mode in sf df xf
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LIB2FUNCS+= _fixuns${mode}si
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.endfor
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# Likewise double-word routines.
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.if ${TARGET_CPUARCH} != "aarch64" && ${TARGET_CPUARCH} != "arm" && \
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${TARGET_CPUARCH} != "riscv64"
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# These are implemented in an ARM specific file but will not be filtered out.
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# RISCVTODO: can't compile
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.for mode in sf df xf tf
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LIB2FUNCS+= _fix${mode}di _fixuns${mode}di
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LIB2FUNCS+= _floatdi${mode} _floatundi${mode}
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.endfor
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.endif
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LIB2ADD = $(LIB2FUNCS_EXTRA)
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LIB2ADD_ST = $(LIB2FUNCS_STATIC_EXTRA)
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# Additional sources to handle exceptions; overridden by targets as needed.
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.if ${MK_LLVM_LIBUNWIND} != "no"
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.PATH: ${COMPILERRTDIR}/lib/builtins
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.PATH: ${UNWINDSRCDIR}
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LIB2ADDEH = gcc_personality_v0.c \
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int_util.c \
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Unwind-EHABI.cpp \
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Unwind-sjlj.c \
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UnwindLevel1-gcc-ext.c \
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UnwindLevel1.c \
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UnwindRegistersRestore.S \
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UnwindRegistersSave.S \
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libunwind.cpp
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CFLAGS+= -I${UNWINDINCDIR} -I${.CURDIR} -D_LIBUNWIND_IS_NATIVE_ONLY
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.if empty(CXXFLAGS:M-std=*)
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CXXFLAGS+= -std=c++11
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.endif
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CXXFLAGS+= -fno-rtti
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STATIC_CXXFLAGS+= -fvisibility=hidden -fPIC
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.if ${MK_DIRDEPS_BUILD} == "yes"
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# Avoid dependency on lib/libc++
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CFLAGS+= -I${SRCTOP}/contrib/libc++/include
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.endif
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.else # MK_LLVM_LIBUNWIND
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.if ${TARGET_CPUARCH} == "arm"
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LIB2ADDEH = unwind-arm.c libunwind-arm.S pr-support.c unwind-c.c
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.else
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LIB2ADDEH = unwind-dw2.c unwind-dw2-fde-glibc.c unwind-sjlj.c gthr-gnat.c \
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unwind-c.c
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.endif
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.endif # MK_LLVM_LIBUNWIND
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LIB2ADDEHSTATIC = $(LIB2ADDEH)
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LIB2ADDEHSHARED = $(LIB2ADDEH)
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# List of extra C and assembler files to add to static and shared libgcc2.
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# Assembler files should have names ending in `.asm'.
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LIB2FUNCS_EXTRA =
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# List of extra C and assembler files to add to static libgcc2.
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# Assembler files should have names ending in `.asm'.
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LIB2FUNCS_STATIC_EXTRA =
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# Defined in libgcc2.c, included only in the static library.
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# KAN: Excluded _sf_to_tf and _df_to_tf as TPBIT_FUNCS are not
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# built on any of our platforms.
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LIB2FUNCS_ST = _eprintf __gcc_bcmp
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FPBIT_FUNCS = _pack_sf _unpack_sf _addsub_sf _mul_sf _div_sf \
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_fpcmp_parts_sf _compare_sf _eq_sf _ne_sf _gt_sf _ge_sf \
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_lt_sf _le_sf _unord_sf _si_to_sf _sf_to_si _negate_sf _make_sf \
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_sf_to_df _thenan_sf _sf_to_usi _usi_to_sf
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DPBIT_FUNCS = _pack_df _unpack_df _addsub_df _mul_df _div_df \
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_fpcmp_parts_df _compare_df _eq_df _ne_df _gt_df _ge_df \
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_lt_df _le_df _unord_df _si_to_df _df_to_si _negate_df _make_df \
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_df_to_sf _thenan_df _df_to_usi _usi_to_df
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TPBIT_FUNCS = _pack_tf _unpack_tf _addsub_tf _mul_tf _div_tf \
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_fpcmp_parts_tf _compare_tf _eq_tf _ne_tf _gt_tf _ge_tf \
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_lt_tf _le_tf _unord_tf _si_to_tf _tf_to_si _negate_tf _make_tf \
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_tf_to_df _tf_to_sf _thenan_tf _tf_to_usi _usi_to_tf
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# These might cause a divide overflow trap and so are compiled with
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# unwinder info.
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LIB2_DIVMOD_FUNCS = _divdi3 _moddi3 _udivdi3 _umoddi3 _udiv_w_sdiv _udivmoddi4
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#-----------------------------------------------------------------------
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#
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# Platform specific bits.
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# When upgrading GCC, get the following definitions from config/<cpu>/t-*
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#
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.if ${TARGET_CPUARCH} == "arm"
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# from config/arm/t-strongarm-elf
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CFLAGS+= -Dinhibit_libc -fno-inline
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CFLAGS.clang+= -fheinous-gnu-extensions
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LIB1ASMSRC = lib1funcs.asm
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LIB1ASMFUNCS = _dvmd_tls _bb_init_func
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# Some compilers generate __aeabi_ functions libgcc_s is missing
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LIBADD+= compiler_rt
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.endif
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.if ${TARGET_CPUARCH} == mips
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LIB2FUNCS_EXTRA = floatunsidf.c floatunsisf.c
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# ABIs other than o32 need this
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.if ${TARGET_ARCH} != "mips" && ${TARGET_ARCH} != "mipsel"
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LIB2FUNCS_EXTRA+= floatdidf.c fixunsdfsi.c
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LIB2FUNCS_EXTRA+= floatdisf.c floatundidf.c
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LIB2FUNCS_EXTRA+= fixsfdi.c floatundisf.c
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LIB2FUNCS_EXTRA+= fixdfdi.c fixunssfsi.c
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.endif
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.endif
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.if ${TARGET_ARCH} == "powerpc"
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# from config/rs6000/t-ppccomm
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LIB2FUNCS_EXTRA = tramp.asm
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LIB2FUNCS_STATIC_EXTRA = eabi.asm
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.endif
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.if ${TARGET_ARCH} == "powerpc64"
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# from config/rs6000/t-ppccomm
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LIB2FUNCS_EXTRA = tramp.asm
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.endif
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.if ${TARGET_CPUARCH} == "sparc64"
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# from config/sparc/t-elf
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LIB1ASMSRC = lb1spc.asm
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LIB1ASMFUNCS = _mulsi3 _divsi3 _modsi3
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.endif
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#-----------------------------------------------------------------------
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# Remove any objects from LIB2FUNCS and LIB2_DIVMOD_FUNCS that are
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# defined as optimized assembly code in LIB1ASMFUNCS.
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.if defined(LIB1ASMFUNCS)
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.for sym in ${LIB1ASMFUNCS}
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LIB2FUNCS:= ${LIB2FUNCS:S/${sym}//g}
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LIB2_DIVMOD_FUNCS:= ${LIB2_DIVMOD_FUNCS:S/${sym}//g}
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.endfor
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.endif
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COMMONHDRS= tm.h tconfig.h options.h gthr-default.h
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.if ${MK_LLVM_LIBUNWIND} != "no"
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# unwind.h is a generated file when MK_LLVM_LIBUNWIND == "no", and a stale
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# copy may be left behind in OBJDIR when switching, so remove it explicitly.
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beforebuild:
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@rm -f ${.OBJDIR}/unwind.h
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.else
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COMMONHDRS+= unwind.h
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.endif
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#-----------------------------------------------------------------------
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#
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# Helpful shortcuts for compiler invocations.
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#
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HIDE = -fvisibility=hidden -DHIDE_EXPORTS
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CC_T = ${CC} -c ${CFLAGS} ${HIDE} -fPIC
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CC_P = ${CC} -c ${CFLAGS} ${HIDE} -p -fPIC
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CC_S = ${CC} -c ${CFLAGS} ${SHARED_CFLAGS} ${PICFLAG} -DSHARED
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#-----------------------------------------------------------------------
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#
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# Functions from libgcc2.c
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#
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STD_CFLAGS =
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DIV_CFLAGS = -fexceptions -fnon-call-exceptions
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STD_FUNCS = ${LIB2FUNCS}
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DIV_FUNCS = ${LIB2_DIVMOD_FUNCS}
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STD_CFILE = libgcc2.c
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DIV_CFILE = libgcc2.c
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OBJ_GRPS = STD DIV
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#-----------------------------------------------------------------------
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#
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# Floating point emulation functions
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#
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.if ${TARGET_CPUARCH} == "armNOT_YET" || \
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${TARGET_CPUARCH} == "powerpc" || ${TARGET_CPUARCH} == "sparc64"
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FPBIT_CFLAGS = -DFINE_GRAINED_LIBRARIES -DFLOAT
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DPBIT_CFLAGS = -DFINE_GRAINED_LIBRARIES
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FPBIT_CFILE = config/fp-bit.c
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DPBIT_CFILE = config/fp-bit.c
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OBJ_GRPS += FPBIT DPBIT
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.endif
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#-----------------------------------------------------------------------
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#
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# Generic build rules for object groups defined above
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#
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.for T in ${OBJ_GRPS}
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${T}_OBJS_T = ${${T}_FUNCS:S/$/.o/}
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${T}_OBJS_P = ${${T}_FUNCS:S/$/.po/}
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${T}_OBJS_S = ${${T}_FUNCS:S/$/.pico/}
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SOBJS += ${${T}_FUNCS:S/$/.pico/}
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${${T}_OBJS_T}: ${${T}_CFILE} ${COMMONHDRS}
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${CC_T} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
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${${T}_OBJS_P}: ${${T}_CFILE} ${COMMONHDRS}
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${CC_P} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
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${${T}_OBJS_S}: ${${T}_CFILE} ${COMMONHDRS}
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${CC_S} ${${T}_CFLAGS} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
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.endfor
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#-----------------------------------------------------------------------
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#
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# Extra objects coming from separate files
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#
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.if !empty(LIB2ADD)
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SOBJS += ${LIB2ADD:R:S/$/.pico/}
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.endif
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#-----------------------------------------------------------------------
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#
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# Objects that should be in static library only.
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#
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SYMS_ST = ${LIB2FUNCS_ST} ${LIB2ADD_ST}
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STAT_OBJS_T = ${SYMS_ST:S/$/.o/}
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STAT_OBJS_P = ${SYMS_ST:S/$/.po/}
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STATICOBJS = ${SYMS_ST:S/$/.o/}
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${STAT_OBJS_T}: ${STD_CFILE} ${COMMONHDRS}
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${CC_T} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
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${STAT_OBJS_P}: ${STD_CFILE} ${COMMONHDRS}
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${CC_P} -DL${.PREFIX} -o ${.TARGET} ${.ALLSRC:M*.c}
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#-----------------------------------------------------------------------
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#
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# Assembler files.
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#
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.if defined(LIB1ASMSRC)
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ASM_T = ${LIB1ASMFUNCS:S/$/.o/}
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ASM_P = ${LIB1ASMFUNCS:S/$/.po/}
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ASM_S = ${LIB1ASMFUNCS:S/$/.pico/}
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ASM_V = ${LIB1ASMFUNCS:S/$/.vis/}
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SOBJS += ${LIB1ASMFUNCS:S/$/.pico/}
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${ASM_T}: ${LIB1ASMSRC} ${.PREFIX}.vis
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${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
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-o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis}
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${ASM_P}: ${LIB1ASMSRC} ${.PREFIX}.vis
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${CC} -x assembler-with-cpp -p -c ${CFLAGS} -DL${.PREFIX} \
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-o ${.TARGET} -include ${.PREFIX}.vis ${.ALLSRC:N*.h:N*.vis}
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${ASM_S}: ${LIB1ASMSRC}
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${CC} -x assembler-with-cpp -c ${PICFLAG} ${CFLAGS} -DL${.PREFIX} \
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-o ${.TARGET} ${.ALLSRC:N*.h}
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${ASM_V}: ${LIB1ASMSRC}
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${CC} -x assembler-with-cpp -c ${CFLAGS} -DL${.PREFIX} \
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-o ${.PREFIX}.vo ${.ALLSRC:N*.h}
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( ${NM} -pg ${.PREFIX}.vo | \
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awk 'NF == 3 && $$2 !~ /^[UN]$$/ { print "\t.hidden ", $$3 }'\
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) > ${.TARGET}
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CLEANFILES += ${ASM_V} ${ASM_V:R:S/$/.vo/}
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.endif
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#-----------------------------------------------------------------------
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#
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# Exception handling / unwinding support.
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#
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EH_OBJS_T = ${LIB2ADDEHSTATIC:R:S/$/.o/}
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EH_OBJS_P = ${LIB2ADDEHSTATIC:R:S/$/.po/}
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EH_OBJS_S = ${LIB2ADDEHSHARED:R:S/$/.pico/}
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EH_CFLAGS = -fexceptions -D__GLIBC__=3 -DElfW=__ElfN
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.if ${TARGET_CPUARCH} != "riscv64"
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# RISCVTODO: unwinding support
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SOBJS += ${EH_OBJS_S}
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.endif
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.for _src in ${LIB2ADDEHSTATIC:M*.c}
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${_src:R:S/$/.o/}: ${_src} ${COMMONHDRS}
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${CC_T} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
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${_src:R:S/$/.po/}: ${_src} ${COMMONHDRS}
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${CC_P} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
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.endfor
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.for _src in ${LIB2ADDEHSHARED:M*.c}
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${_src:R:S/$/.pico/}: ${_src} ${COMMONHDRS}
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${CC_S} ${EH_CFLAGS} -o ${.TARGET} ${.IMPSRC}
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.endfor
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CLEANFILES += ${COMMONHDRS}
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CLEANFILES += cs-*.h option*
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#-----------------------------------------------------------------------
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#
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# Build symbol version map
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#
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SHLIB_MKMAP = ${GCCDIR}/mkmap-symver.awk
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SHLIB_MKMAP_OPTS =
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SHLIB_MAPFILES = ${GCCDIR}/libgcc-std.ver
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.if ${TARGET_CPUARCH} == "arm"
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SHLIB_MAPFILES += ${GCCDIR}/config/arm/libgcc-bpabi.ver
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.endif
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VERSION_MAP = libgcc.map
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libgcc.map: ${SHLIB_MKMAP} ${SHLIB_MAPFILES} ${SOBJS}
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( ${NM} -pg ${SOBJS};echo %% ; \
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cat ${SHLIB_MAPFILES} \
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| sed -e '/^[ ]*#/d' \
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-e 's/^%\(if\|else\|elif\|endif\|define\)/#\1/' \
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| ${CC} ${CFLAGS} -E -xassembler-with-cpp -; \
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) | awk -f ${SHLIB_MKMAP} ${SHLIB_MKMAP_OPTS} > ${.TARGET}
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CLEANFILES += libgcc.map
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#-----------------------------------------------------------------------
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#
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# Build additional static libgcc_eh[_p].a libraries.
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#
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libgcc_eh.a: ${EH_OBJS_T}
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@${ECHO} building static gcc_eh library
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@rm -f ${.TARGET}
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${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_T} | tsort -q`
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${RANLIB} ${RANLIBFLAGS} ${.TARGET}
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_LIBS+= libgcc_eh.a
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.if ${MK_PROFILE} != "no"
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libgcc_eh_p.a: ${EH_OBJS_P}
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@${ECHO} building profiled gcc_eh library
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@rm -f ${.TARGET}
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${AR} ${ARFLAGS} ${.TARGET} `lorder ${EH_OBJS_P} | tsort -q`
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${RANLIB} ${RANLIBFLAGS} ${.TARGET}
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_LIBS+= libgcc_eh_p.a
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.endif
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_libinstall: _lib-eh-install
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_lib-eh-install:
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.if ${MK_INSTALLLIB} != "no"
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${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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${_INSTALLFLAGS} libgcc_eh.a ${DESTDIR}${LIBDIR}
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.endif
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.if ${MK_PROFILE} != "no"
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${INSTALL} -C -o ${LIBOWN} -g ${LIBGRP} -m ${LIBMODE} \
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${_INSTALLFLAGS} libgcc_eh_p.a ${DESTDIR}${LIBDIR}
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.endif
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CLEANFILES+= libgcc_eh.a libgcc_eh_p.a ${EH_OBJS_T} ${EH_OBJS_P}
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.include <bsd.lib.mk>
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.SUFFIXES: .vis .vo
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