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54d6cf9ec8
With an out-of-tree Clang, we can use the -resource-dir flag when linking
to point it at the runtime libraries from the current SYSROOT.
This moves the path to the clang-internal library directory to a separate
.mk file that can be used by Makefiles that want to find the sanitizer
libraries. I intend to re-use this .mk file for my upcoming changes that
allow building the entire base system with ASAN/UBSAN/MSAN.
Reviewed By: dim
Differential Revision: https://reviews.freebsd.org/D28852
(cherry picked from commit fe525d3f91)
24 lines
973 B
Makefile
24 lines
973 B
Makefile
CLANG_SUBDIR=clang/11.0.1
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CLANGDIR= /usr/lib/${CLANG_SUBDIR}
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SANITIZER_LIBDIR= ${CLANGDIR}/lib/freebsd
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# armv[67] is a bit special since we allow a soft-floating version via
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# CPUTYPE matching *soft*. This variant may not actually work though.
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.if ${MACHINE_ARCH:Marmv[67]*} != "" && \
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(!defined(CPUTYPE) || ${CPUTYPE:M*soft*} == "")
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CRTARCH?= armhf
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.else
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CRTARCH?= ${MACHINE_ARCH:S/amd64/x86_64/:C/hf$//:S/mipsn32/mips64/}
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.endif
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.if ${COMPILER_TYPE} == "clang"
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# The only way to set the path to the sanitizer libraries with clang is to
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# override the resource directory.
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# Note: lib/freebsd is automatically appended to the -resource-dir value.
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SANITIZER_LDFLAGS= -resource-dir=${SYSROOT}${CLANGDIR}
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# Also set RPATH to ensure that the dynamically linked runtime libs are found.
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SANITIZER_LDFLAGS+= -Wl,--enable-new-dtags
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SANITIZER_LDFLAGS+= -Wl,-rpath,${SANITIZER_LIBDIR}
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.else
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.error "Unknown link flags for -fsanitize=... COMPILER_TYPE=${COMPILER_TYPE}"
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.endif
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