set-alternatives.sh

#!/bin/bash

PROGS=(
  asan_symbolize
  bugpoint
  clang++
  clang
  clang-cpp
  clangd
  count
  dsymutil
  FileCheck
  ld64.lld
  ld.lld
  llc
  lld
  lldb
  lldb-argdumper
  lldb-instr
  lldb-server
  lldb-vscode
  lld-link
  lli
  lli-child-target
  llvm-addr2line
  llvm-ar
  llvm-as
  llvm-bcanalyzer
  llvm-bitcode-strip
  llvm-cat
  llvm-cfi-verify
  llvm-config
  llvm-cov
  llvm-c-test
  llvm-cvtres
  llvm-cxxdump
  llvm-cxxfilt
  llvm-cxxmap
  llvm-debuginfod
  llvm-debuginfod-find
  llvm-diff
  llvm-dis
  llvm-dlltool
  llvm-dwarfdump
  llvm-dwarfutil
  llvm-dwp
  llvm-exegesis
  llvm-extract
  llvm-gsymutil
  llvm-ifs
  llvm-install-name-tool
  llvm-jitlink
  llvm-jitlink-executor
  llvm-lib
  llvm-libtool-darwin
  llvm-link
  llvm-lipo
  llvm-lto
  llvm-lto2
  llvm-mc
  llvm-mca
  llvm-ml
  llvm-modextract
  llvm-mt
  llvm-nm
  llvm-objcopy
  llvm-objdump
  llvm-opt-report
  llvm-otool
  llvm-pdbutil
  llvm-PerfectShuffle
  llvm-profdata
  llvm-profgen
  llvm-ranlib
  llvm-rc
  llvm-readelf
  llvm-readobj
  llvm-reduce
  llvm-remark-size-diff
  llvm-rtdyld
  llvm-sim
  llvm-size
  llvm-split
  llvm-stress
  llvm-strings
  llvm-strip
  llvm-symbolizer
  llvm-tapi-diff
  llvm-tblgen
  llvm-tli-checker
  llvm-undname
  llvm-windres
  llvm-xray
  not
  obj2yaml
  opt
  sanstats
  split-file
  UnicodeNameMappingGenerator
  verify-uselistorder
  wasm-ld
  yaml2obj
  yaml-bench
)

for PROG in "${PROGS[@]}"; do
    PPATH=$(which "${PROG}" || printf "/usr/bin/${PROG}")
    PPATH15=$(which "${PROG}-15")
    echo "Updating alternative ${PPATH}=${PPATH15}"
    sudo update-alternatives --install "${PPATH}" "${PROG}" "${PPATH15}" 100 || echo "Failed to install ${PROG}"
done