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Add WITH_LLVM_CXXFILT option to install llvm-cxxfilt as c++filt

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Since elftoolchain's cxxfilt is rather far behind on features, and we
ran into several bugs, add an option to use llvm-cxxfilt as an drop-in
replacement.

It supports the same options as elftoolchain cxxfilt, though it doesn't
have support for old ARM (C++ Annotated Reference Manual, not the CPU)
and GNU v2 manglings. But these are irrelevant in 2020.

Note: as we already compile the required libraries as part of libllvm,
this will not add any significant build time either.

PR:		250702
Reviewed by:	emaste, yuri
Differential Revision: https://reviews.freebsd.org/D27071
MFC after:	2 weeks
This commit is contained in:
dim 2020-11-03 19:57:28 +00:00
parent 3379d69044
commit a8b9895872
7 changed files with 21 additions and 2 deletions
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4
share/man/man5/src.conf.5
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@ -1,6 +1,6 @@
.\" DO NOT EDIT-- this file is @generated by tools/build/options/makeman.
.\" $FreeBSD$
.Dd September 15, 2020
.Dd November 3, 2020
.Dt SRC.CONF 5
.Os
.Sh NAME
@ -919,6 +919,8 @@ Set to disable debugging assertions in LLVM.
Set to not build the
.Xr llvm-cov 1
tool.
.It Va WITH_LLVM_CXXFILT
Install LLVM's llvm-cxxfilt as c++filt, instead of ELF Tool Chain's cxxfilt.
.It Va WITHOUT_LLVM_TARGET_AARCH64
Set to not build LLVM target support for AArch64.
The

1
share/mk/src.opts.mk
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@ -210,6 +210,7 @@ __DEFAULT_NO_OPTIONS = \
GNU_GREP_COMPAT \
HESIOD \
LIBSOFT \
LLVM_CXXFILT \
LOADER_FIREWIRE \
LOADER_VERBOSE \
LOADER_VERIEXEC_PASS_MANIFEST \

2
tools/build/options/WITHOUT_LLVM_CXXFILT Normal file
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@ -0,0 +1,2 @@
.\" $FreeBSD$
Install ELF Tool Chain's cxxfilt as c++filt, instead of LLVM's llvm-cxxfilt.

2
tools/build/options/WITH_LLVM_CXXFILT Normal file
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@ -0,0 +1,2 @@
.\" $FreeBSD$
Install LLVM's llvm-cxxfilt as c++filt, instead of ELF Tool Chain's cxxfilt.

2
usr.bin/Makefile
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@ -260,7 +260,9 @@ SUBDIR.${MK_TOOLCHAIN}+= ar
SUBDIR.${MK_TOOLCHAIN}+= c89
SUBDIR.${MK_TOOLCHAIN}+= c99
SUBDIR.${MK_TOOLCHAIN}+= ctags
.if ${MK_LLVM_CXXFILT} == "no"
SUBDIR.${MK_TOOLCHAIN}+= cxxfilt
.endif
SUBDIR.${MK_TOOLCHAIN}+= objcopy
SUBDIR.${MK_TOOLCHAIN}+= file2c
SUBDIR.${MK_TOOLCHAIN}+= gprof

5
usr.bin/clang/Makefile
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@ -16,6 +16,10 @@ SUBDIR+= llvm-nm
SUBDIR+= llvm-objdump
SUBDIR+= llvm-symbolizer
.if ${MK_CLANG_EXTRAS} != "no" || ${MK_LLVM_CXXFILT} != "no"
SUBDIR+= llvm-cxxfilt
.endif
.if ${MK_CLANG_EXTRAS} != "no"
SUBDIR+= bugpoint
SUBDIR+= llc
@ -23,7 +27,6 @@ SUBDIR+= lli
SUBDIR+= llvm-as
SUBDIR+= llvm-bcanalyzer
SUBDIR+= llvm-cxxdump
SUBDIR+= llvm-cxxfilt
SUBDIR+= llvm-diff
SUBDIR+= llvm-dis
SUBDIR+= llvm-dwarfdump

7
usr.bin/clang/llvm-cxxfilt/Makefile
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@ -1,8 +1,15 @@
# $FreeBSD$
.include <src.opts.mk>
PROG_CXX= llvm-cxxfilt
SRCDIR= llvm/tools/llvm-cxxfilt
SRCS+= llvm-cxxfilt.cpp
.if ${MK_LLVM_CXXFILT} != "no"
LINKS= ${BINDIR}/llvm-cxxfilt ${BINDIR}/c++filt
MLINKS= llvm-cxxfilt.1 c++filt.1
.endif
.include "../llvm.prog.mk"