pelf_linker

#!/bin/sh

# Initialize variables
PELF_BINDIRS=""
PELF_LIBDIRS=""

# Function to concatenate existing directories from *_binDir environment variables into PELF_BINDIRS
concatenate_bindirs() {
	# Find all environment variables ending with _binDir
	vars="$(env | grep ".*_binDir=" | cut -f 1 -d '=')"
	for v in $vars; do
		# Get the value of the variable
		eval "vval=\$$v"

		# Save the current IFS and change it to handle colon-separated paths
		old_ifs="$IFS"
		IFS=":"

		# Loop through each path in the variable
		for dir in $vval; do
			# Check if the directory exists
			if [ -d "$dir" ]; then
				# Append to PELF_BINDIRS if the directory exists
				if [ -z "$PELF_BINDIRS" ]; then
					PELF_BINDIRS="$dir"
				else
					PELF_BINDIRS="$PELF_BINDIRS:$dir"
				fi
			fi
		done

		# Restore the original IFS
		IFS="$old_ifs"
	done

	# Print the concatenated PELF_BINDIRS
	if [ -z "$1" ]; then
		echo "PELF_BINDIRS=\"$PELF_BINDIRS\""
	fi
}

# Function to concatenate existing directories from *_libDir environment variables into PELF_LIBDIRS
concatenate_libdirs() {
	# Find all environment variables ending with _libDir
	vars="$(env | grep ".*_libDir=" | cut -f 1 -d '=')"
	for v in $vars; do
		# Get the value of the variable
		eval "vval=\$$v"

		# Save the current IFS and change it to handle colon-separated paths
		old_ifs="$IFS"
		IFS=":"

		# Loop through each path in the variable
		for dir in $vval; do
			# Check if the directory exists
			if [ -d "$dir" ]; then
				# Append to PELF_LIBDIRS if the directory exists
				if [ -z "$PELF_LIBDIRS" ]; then
					PELF_LIBDIRS="$dir"
				else
					PELF_LIBDIRS="$PELF_LIBDIRS:$dir"
				fi
			fi
		done

		# Restore the original IFS
		IFS="$old_ifs"
	done

	# Print the concatenated PELF_LIBDIRS
	if [ -z "$1" ]; then
		echo "PELF_LIBDIRS=\"$PELF_LIBDIRS\""
	fi
}

# Call the functions
concatenate_bindirs "$1"
concatenate_libdirs "$1"

if [ "$1" = "--export" ]; then
	export PELF_LIBDIRS="$PELF_LIBDIRS"
	export PELF_BINDIRS="$PELF_BINDIRS"
else
	LD_LIBRARY_PATH="$PELF_LIBDIRS" PATH="$PATH:$PELF_BINDIRS" "$@"
fi