add multiple versions of arm-none-eabi toolchain to update-alternatives

register-arm-toolchains.sh

#!/usr/bin/env bash

set -e

TOOLCHAIN_FILE="./toolchains.dat"
PRIORITIES_FILE="./priorities.dat"

rm -f $TOOLCHAIN_FILE $PRIORITIES_FILE

TARGET_TRIPLE="arm-none-eabi"
GCC="$TARGET_TRIPLE-gcc"
GXX="$TARGET_TRIPLE-g++"
ADDR2LINE="$TARGET_TRIPLE-addr2line"
AR="$TARGET_TRIPLE-ar"
AS="$TARGET_TRIPLE-as"
CXX="$TARGET_TRIPLE-c++"
CXXFILT="$TARGET_TRIPLE-c++filt"
CPP="$TARGET_TRIPLE-cpp"
ELFEDIT="$TARGET_TRIPLE-elfedit"
GCC_AR="$TARGET_TRIPLE-gcc-ar"
GCC_NM="$TARGET_TRIPLE-gcc-nm"
GCC_RANLIB="$TARGET_TRIPLE-gcc-ranlib"
GCOV="$TARGET_TRIPLE-gcov"
GCOV_DUMP="$TARGET_TRIPLE-gcov-dump"
GCOV_TOOL="$TARGET_TRIPLE-gcov-tool"
GDB="$TARGET_TRIPLE-gdb"
GDB_ADD_INDEX="$TARGET_TRIPLE-gdb-add-index"
GDB_ADD_INDEX_PY="$TARGET_TRIPLE-gdb-add-index-py"
GDB_PY="$TARGET_TRIPLE-gdb-py"
GPROF="$TARGET_TRIPLE-gprof"
LD="$TARGET_TRIPLE-ld"
LD_BFD="$TARGET_TRIPLE-ld.bfd"
LTO_DUMP="$TARGET_TRIPLE-lto-dump"
NM="$TARGET_TRIPLE-nm"
OBJCOPY="$TARGET_TRIPLE-objcopy"
OBJDUMP="$TARGET_TRIPLE-objdump"
RANLIB="$TARGET_TRIPLE-ranlib"
READELF="$TARGET_TRIPLE-readelf"
SIZE="$TARGET_TRIPLE-size"
STRINGS="$TARGET_TRIPLE-strings"
STRIP="$TARGET_TRIPLE-strip"

ls -1 $HOME | grep "gcc-arm-none-eabi-" > $TOOLCHAIN_FILE

awk -F '-' '{ print $5$7 }' $TOOLCHAIN_FILE | sed "s/q//" > $PRIORITIES_FILE

i=0
for toolchain in `cat $TOOLCHAIN_FILE`; do
	let "i+=1"
	priority=`awk 'BEGIN{ RS = "" ; FS = "\n" }{ print $'"$i"' }' $PRIORITIES_FILE`
	
	echo "adding $toolchain with priority $priority"

	sudo update-alternatives \
		--install /usr/bin/$GCC              $GCC              $HOME/$toolchain/bin/$GCC          $priority	\
		--slave   /usr/bin/$GXX              $GXX              $HOME/$toolchain/bin/$GXX 			\
		--slave   /usr/bin/$ADDR2LINE        $ADDR2LINE        $HOME/$toolchain/bin/$ADDR2LINE 			\
		--slave   /usr/bin/$AR               $AR               $HOME/$toolchain/bin/$AR				\
		--slave   /usr/bin/$AS               $AS               $HOME/$toolchain/bin/$AS				\
		--slave   /usr/bin/$CXX              $CXX              $HOME/$toolchain/bin/$CXX			\
		--slave   /usr/bin/$CXXFILT          $CXXFILT          $HOME/$toolchain/bin/$CXXFILT			\
		--slave   /usr/bin/$CPP              $CPP              $HOME/$toolchain/bin/$CPP			\
		--slave   /usr/bin/$ELFEDIT          $ELFEDIT          $HOME/$toolchain/bin/$ELFEDIT			\
		--slave   /usr/bin/$GCC_AR           $GCC_AR           $HOME/$toolchain/bin/$GCC_AR			\
		--slave   /usr/bin/$GCC_NM           $GCC_NM           $HOME/$toolchain/bin/$GCC_NM			\
		--slave   /usr/bin/$GCC_RANLIB       $GCC_RANLIB       $HOME/$toolchain/bin/$GCC_RANLIB			\
		--slave   /usr/bin/$GCOV             $GCOV             $HOME/$toolchain/bin/$GCOV			\
		--slave   /usr/bin/$GCOV_DUMP        $GCOV_DUMP        $HOME/$toolchain/bin/$GCOV_DUMP			\
		--slave   /usr/bin/$GCOV_TOOL        $GCOV_TOOL        $HOME/$toolchain/bin/$GCOV_TOOL			\
		--slave   /usr/bin/$GDB              $GDB              $HOME/$toolchain/bin/$GDB			\
		--slave   /usr/bin/$GDB_ADD_INDEX    $GDB_ADD_INDEX    $HOME/$toolchain/bin/$GDB_ADD_INDEX		\
		--slave   /usr/bin/$GDB_ADD_INDEX_PY $GDB_ADD_INDEX_PY $HOME/$toolchain/bin/$GDB_ADD_INDEX_PY 		\
		--slave   /usr/bin/$GDB_PY           $GDB_PY           $HOME/$toolchain/bin/$GDB_PY			\
		--slave   /usr/bin/$GPROF            $GPROF            $HOME/$toolchain/bin/$GPROF			\
		--slave   /usr/bin/$LD               $LD               $HOME/$toolchain/bin/$LD				\
		--slave   /usr/bin/$LD_BFD           $LD_BFD           $HOME/$toolchain/bin/$LD_BFD			\
		--slave   /usr/bin/$LTO_DUMP         $LTO_DUMP         $HOME/$toolchain/bin/$LTO_DUMP			\
		--slave   /usr/bin/$NM               $NM               $HOME/$toolchain/bin/$NM				\
		--slave   /usr/bin/$OBJCOPY          $OBJCOPY          $HOME/$toolchain/bin/$OBJCOPY			\
		--slave   /usr/bin/$OBJDUMP          $OBJDUMP          $HOME/$toolchain/bin/$OBJDUMP			\
		--slave   /usr/bin/$RANLIB           $RANLIB           $HOME/$toolchain/bin/$RANLIB			\
		--slave   /usr/bin/$READELF          $READELF          $HOME/$toolchain/bin/$READELF			\
		--slave   /usr/bin/$SIZE             $SIZE             $HOME/$toolchain/bin/$SIZE			\
		--slave   /usr/bin/$STRINGS          $STRINGS          $HOME/$toolchain/bin/$STRINGS			\
		--slave   /usr/bin/$STRIP            $STRIP            $HOME/$toolchain/bin/$STRIP
done