Attempt at making an automated gcc cross compiler isntaller, needs work...

cross-gcc-install.sh

#!/usr/bin/env sh

# Usage:
# 	sh cross-gcc-install.sh [arguments]
# Use this script to download, build and install a gcc cross compiler in ubuntu. Requires root permisions.\n
# Arguments:
#
#		[-t|--target]           - Set target architecture. Default: "i686-elf"
# 		[-df|--dependency-file] - Set explicit dependency file. Will try to install with apt-get. Default: "gcc-build-requirements"
# 		[-lf|--log-file]        - Set log file. Default: ".gcc-install-log"
# 		[-nc|--no-color]        - Disable ANSI color printing.
# 		[-h|--help]             - Show this help text and exit.
# Exit codes:
#
#		0 - Success.
#		1 - Invalid argument.
#		2 - User aborted.
#		3 - apt-get failed.
#		4 - wget error.

#This  script requires  root permisions,  also uses ANSI escape  codes to print
#colors to the terminal, disable this feature passing "--no-color".

#color_printf: Print text with color using ANSI escape codes.
#args:
#	1: string to print.
#	2: color, must be an ANSI escape secuence.
color_printf() {
	printf "$2"
	printf "$1"
	printf "$ANSI_RESET"
}

#log: Appends a string with timestamp and log type to the log file.
#args:
#	1: log tag, valid types are: "INFO", "WARNING" and "ERROR".
#	2: string to log.
log() {
	printf "[$(date "+%d %m %Y %H:%M:%S")]" >> $LOG_FILE
	case "$1" in
		"INFO"|"info"|"i" )
			printf "[ INFO  ]: " >> $LOG_FILE	
			;;
		"WARNING"|"warning"|"w" )
			printf "[WARNING]: " >> $LOG_FILE	
			;;
		"ERROR"|"error"|"e" )
			printf "[ ERROR ]: " >> $LOG_FILE	
			;;
	esac
	echo "$2" >> $LOG_FILE
}

#pipe_log: Appends pipe input string with timestamp and log type to the log file.
#args:
#	1: log tag, valid types are: "INFO", "WARNING" and "ERROR".
pipe_log() {
	while read pinput; do
		printf "[$(date "+%d %m %Y %H:%M:%S")]" >> $LOG_FILE
		case "$1" in
			"INFO"|"info"|"i" )
				printf "[ INFO  ]: " >> $LOG_FILE	
				;;
			"WARNING"|"warning"|"w" )
				printf "[WARNING]: " >> $LOG_FILE	
				;;
			"ERROR"|"error"|"e" )
				printf "[ ERROR ]: " >> $LOG_FILE	
				;;
		esac
		echo "$pinput" >> $LOG_FILE
	done
}

ANSI_RESET="\e[0m"
ANSI_RED="\e[31m"
ANSI_GREEN="\e[32m"
ANSI_YELLOW="\e[33m"

DEPENDENCIES_FILE="gcc-build-requirements"
LOG_FILE=".gcc-install-log"
COMPILER_TARGET="i686-elf"

PIPE_STDOUT=".log_stdout"
PIPE_STDWRN=".log_stdwrn"
PIPE_STDERR=".log_stderr"

HELP_TEXT="
Usage:\n
    \"sh cross-gcc-install.sh [arguments]\"\n
Use this script to download, build and install a gcc cross compiler in debian based systems. Requires root permisions.\n
Arguments:
    [-t|--target] - Set target architecture. Default: "i686-elf"
    [-df|--dependency-file] - Set Dependency file Will try  to install  with apt-get.  Default: "gcc-build-requirements"
    [-lf|--log-file] - Set log file. Default: .gcc-install-log
    [-nc|--no-color] - Disable  ANSI color printing.
    [-h|--help] - Show this help text and exit.\n
Exit codes:
    0 - Success.
    1 - Invalid argument.
    3 - apt-get failed.
    4 - wget error."

help_flag="no"

while [ $# -gt 0 ]; do
	arg="$1"
	case "$arg" in
		"-nc"|"--no-color" )
			ANSI_RESET=""
			ANSI_RED=""
			ANSI_GREEN=""
			ANSI_YELLOW=""
			;;
		"-h"|"--help" )
			help_flag="0"
			;;
		"-df"|"--dependency-file" )
			shift
			DEPENDENCIES_FILE="$1"
			;;
		"-lf"|"--log-file" )
			shift
			LOG_FILE="$1"
			;;
		-t|--target )
			shift
			COMPILER_TARGET="$1"
			;;
		* )
			printf "Invalid argument!: \"$arg\"."
			help_flag="1"
			;;
	esac
	shift
done

if [ "$help_flag" != "no" ]; then
	color_printf "$HELP_TEXT\n" $ANSI_YELLOW
	exit $help_flag
fi

printf "Log file location: "
color_printf "$LOG_FILE\n" $ANSI_YELLOW

BINUTILS_SOURCE_URL="https://ftp.gnu.org/gnu/binutils/binutils-2.30.tar.gz"
GCC_SOURCE_URL="https://ftp.gnu.org/gnu/gcc/gcc-7.3.0/gcc-7.3.0.tar.gz"

echo "$ANSI_GREEN BINUTILS $ANSI_RESET compressed source from: \n\t$ANSI_YELLOW$BINUTILS_SOURCE_URL$ANSI_RESET"
echo "$ANSI_GREEN GCC $ANSI_RESET      compressed source from: \n\t$ANSI_YELLOW$GCC_SOURCE_URL$ANSI_RESET"

INSTALL_DIRECTORY="/usr/local/cross"

while true; do

	printf "Directory for gcc cross compiler instalation (default is "
	color_printf "\"/usr/local/cross/\"" $ANSI_YELLOW
	read -p "):" USER_INPUT

	case $USER_INPUT in
		"" )
			break;;
			
		* )
			echo "Install location:"
			color_printf "\t$USER_INPUT\n" $ANSI_YELLOW

			while true; do

				printf "Are you sure? ("
				color_printf "yY" $ANSI_GREEN
				printf "/"
				color_printf "nN" $ANSI_RED
				read -p "): " OPTION

				exit="false"
				echo "\"$OPTION\""
				case $OPTION in
					[yY]* | "" )
						INSTALL_DIRECTORY="$USER_INPUT"
						exit="true"
						break;;
					[nN]* )
						break;;
				esac
			done
			if [ "$exit" = "true" ]; then
				break
			fi;;
	esac
done

#Create pipes to redirect programs output.
mkfifo "$PIPE_STDOUT"
mkfifo "$PIPE_STDWRN"
mkfifo "$PIPE_STDERR"

tail -n +1 -f "$PIPE_STDOUT" | pipe_log "i" &
tail -n +1 -f "$PIPE_STDWRN" | pipe_log "w" &
tail -n +1 -f "$PIPE_STDERR" | pipe_log "e" &

mkdir -p $INSTALL_DIRECTORY  2>"$PIPE_STDWRN"
printf "Install directory set to: "
color_printf "$INSTALL_DIRECTORY\n" $ANSI_YELLOW

log "i" "Created install directory at $INSTALL_DIRECTORY"

printf "To build "
color_printf "gcc" $ANSI_GREEN
printf " and "
color_printf "binutils" $ANSI_GREEN
printf " we need to get the following "
color_printf "dependencies" $ANSI_YELLOW
printf ": \n"

apt_dependency_str=""

while read -r dependency; do
	apt_dependency_str="$apt_dependency_str $dependency"
    echo "\t$dependency"
done < "$DEPENDENCIES_FILE"

while true; do

	printf "Do you wish to continue? ("
	color_printf "yY" $ANSI_GREEN
	printf "/"
	color_printf "nN" $ANSI_RED
	read -p "): " OPTION

	case $OPTION in
		[yY]* | ""  )
			INSTALL_DIRECTORY="$USER_INPUT"
			break;;
		[nN]* )
			color_printf "User aborted.\n" $ANSI_RED
			log "i" "User aborted script at dependency instalation phase. Quitting..."
			exit 2;;
	esac
done

echo "Installing dependencies with apt-get..."
apt-get install $apt_dependency_str 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"

if [ "$?" = "100" ]; then
	color_printf "Error installing dependencies" $ANSI_RED
	echo ", check log file for more information."
	log "e" "apt-get error!. Quitting..."
	exit 3
fi

color_printf "Success" $ANSI_GREEN
echo " installing dependencies."

log "i" "Successfully installed dependencies."

export PREFIX="$INSTALL_DIRECTORY"
export TARGET="$COMPILER_TARGET"
export PATH="$PREFIX/bin:$PATH"

mkdir src 2>"$PIPE_STDWRN"

echo "Downloading sources..."
printf "    Downloading "
color_printf "binutils" $ANSI_YELLOW
echo " please wait..."
log "i" "Started downloading binutils source from $BINUTILS_SOURCE_URL"
#wget -O src/binutils-source.tar.gz $BINUTILS_SOURCE_URL -q --show-progress

if [ "$?" != "0" ]; then
	color_printf "Error getting sources" $ANSI_RED
	echo ", check log file for more information."
	log "e" "wget error!. Quitting..."
	exit 4
fi

color_printf "Finished downloading binutils.\n" $ANSI_GREEN
log "i" "Finished downloading binutils source from $BINUTILS_SOURCE_URL"

printf "    Downloading "
color_printf "gcc" $ANSI_YELLOW
echo " please wait..."
log "i" "Started downloading gcc source from $GCC_SOURCE_URL"
#wget -O src/gcc-source.tar.gz $GCC_SOURCE_URL  -q --show-progress

if [ "$?" != "0" ]; then
	color_printf "Error getting sources" $ANSI_RED
	echo ", check log file for more information."
	log "e" "wget error!. Quitting..."
	exit 4
fi

color_printf "Finished downloading gcc.\n" $ANSI_GREEN
log "i" "Finished downloading gcc source from $GCC_SOURCE_URL"

echo "Extracting source files..."
log "i" "Extracting binutils..."
tar -xf src/binutils-source.tar.gz -C src/ 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
log "i" "Done."
log "i" "Extracting gcc..."
tar -xf src/gcc-source.tar.gz -C src/ 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
log "i" "Done."
echo "Finished extracting sources."

echo "Deleting compressed source files..."
rm src/binutils-source.tar.gz
rm src/gcc-source.tar.gz
echo "Compressed sources deleted."

log "i" "Deleted compressed sources."

binutils_src_folder="$(ls src | grep binutils)"
gcc_src_folder="$(ls src | grep gcc)"

log "i" "binutils source folder: $binutils_src_folder"
log "i" "gcc source folder: $gcc_src_folder"

log "i" "Building binutils..."

color_printf "Building binutils..." $ANSI_YELLOW

mkdir -p build/binutils 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
cd build/binutils

printf "\nBINUTILS source directory is: \n\t"
color_printf "$binutils_src_folder" $ANSI_YELLOW

printf "\nRunning \"configure\"..."
../../src/$binutils_src_folder/configure  --target=$TARGET --prefix="$PREFIX" --with-sysroot --disable-nls --disable-werror 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
echo "Done."
printf  "Running \"make\"..."
make 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
echo "Done."
printf  "Running \"make install\"..."
make install 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
echo "Done."

color_printf "Finished building binutils!\n" $ANSI_GREEN

log "i" "Finished building binutils."

log "i" "Building gcc..."

color_printf "Building gcc..." $ANSI_YELLOW

mkdir -p build/gcc 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
cd build/gcc

printf "\nGCC source directory is: \n\t"
color_printf "$gcc_src_folder" $ANSI_YELLOW

printf "\nRunning \"configure\"..."
../../src/$gcc_src_folder/configure  --target=$TARGET --prefix="$PREFIX" --disable-nls --enable-languages=c,c++ --without-headers  1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
echo "Done."
printf  "Running \"make all-gcc\"..."
make all-gcc 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
echo "Done."
printf  "Running \"make all-target-libgcc\"..."
make all-target-libgcc 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
echo "Done."
printf  "Running \"make install-gcc\"..."
make install-gcc 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
echo "Done."
printf  "Running \"make install-target-libgcc\"..."
make install-target-libgcc 1>"$PIPE_STDOUT" 2>"$PIPE_STDERR"
echo "Done."

color_printf "Finished building gcc!\n" $ANSI_GREEN

log "i" "Finished building gcc."

#Delete pipes.
rm $PIPE_STDOUT $PIPE_STDWRN $PIPE_STDERR