cc55ee8009
Both clang >= 12 and gcc >= 10.1 now default to -moutline-atomics for aarch64. This requires a bunch of helper functions in libcompiler_rt.a, to avoid link errors like "undefined symbol: __aarch64_ldadd8_acq_rel". (Note: of course you can use -mno-outline-atomics as a workaround too, but this would negate the potential performance benefit of the faster LSE instructions.) Bump __FreeBSD_version so ports maintainers can easily detect this. PR: 257392 MFC after: 2 weeks
50 lines
1.2 KiB
Makefile
50 lines
1.2 KiB
Makefile
# $FreeBSD$
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.include <src.opts.mk>
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PACKAGE= lib${LIB}
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LIB= compiler_rt
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MK_SSP= no
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NO_PIC=
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WARNS?= 2
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CFLAGS+= ${PICFLAG}
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CFLAGS+= -fvisibility=hidden
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CFLAGS+= -DVISIBILITY_HIDDEN
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CFLAGS+= -I${SRCTOP}/contrib/libcxxrt
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# gcc has incompatible internal declarations for __divtc3 and __multc3, but has
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# no option to silence its warning, so make warnings non-fatal.
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MK_WERROR.gcc= no
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.include "Makefile.inc"
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# Out-of-line LSE atomics helpers for aarch64
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.if ${MACHINE_CPUARCH} == "aarch64"
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. for pat in cas swp ldadd ldclr ldeor ldset
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. for size in 1 2 4 8 16
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. for model in 1 2 3 4
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. if ${pat} == "cas" || ${size} != "16"
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# Use .for to define lse_name, to get a special loop-local variable
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. for lse_name in outline_atomic_${pat}${size}_${model}.S
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CLEANFILES+= ${lse_name}
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STATICOBJS+= ${lse_name:R}.o
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ACFLAGS.${lse_name}+= -DL_${pat} -DSIZE=${size} -DMODEL=${model} -I${CRTSRC}
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${lse_name}: lse.S
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ln -sf ${.ALLSRC} ${.TARGET}
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. endfor # lse_name
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. endif
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. endfor # model
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. endfor # size
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. endfor # pat
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.endif
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.if ${MK_INSTALLLIB} != "no"
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SYMLINKS+= libcompiler_rt.a ${LIBDIR}/libgcc.a
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.endif
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.if ${MK_PROFILE} != "no"
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SYMLINKS+= libcompiler_rt_p.a ${LIBDIR}/libgcc_p.a
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.endif
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.include <bsd.lib.mk>
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