adding missing livecd files

rex.project/x86_64/environments/livecd.env.bash

@@ -0,0 +1,75 @@
+set -a
+
+source ./project_config.sh
+
+TERM=xterm-256color
+COLORTERM=truecolor
+LC_ALL=C
+
+function echofail() {
+	echo
+	echo "FAILED: $1"
+	echo
+	exit 1
+}
+
+# keeps talking about T_SYSROOT as $LFS
+# wants $LFS path to be a mount
+# needs to be set for any user including root
+
+#2.6
+# sourced from project_config
+T_SYSROOT=${dir_sysroot}
+LFS=${T_SYSROOT}
+
+rex_dir="/rex_embedded"
+
+
+# 4.3 we skip user and group creation, it's expected to be done before
+# you start if you want a different user than you're running as
+# == after that, configure the rex unit for dir creation to use that user
+
+if [ "$(id -u)" -ne 0 ]; then 
+	echo "Not running as root." 
+fi
+
+# 4.4
+
+# The set +h command turns off bash's hash function, which affects caching of paths for executables
+set +h
+
+# ensures newly created files and directories are only writable by their owner, but are readable and executable by anyone
+umask 022
+
+# sets a comptabile machine name description for use when building crosstools that isn't going to be what the host system is using
+# $LFS_TGT is what LFS uses for this
+T_TRIPLET=x86_64-dhl-linux-gnu
+
+# prevents some configure scripts from looking in the wrong place for config.site 
+CONFIG_SITE=${T_SYSROOT}/usr/share/config.site
+
+# 4.5
+MAKEFLAGS="-j$(nproc)"
+
+# where the cross-compiler gets installed ($LFS/tools)
+CROSSTOOLS_DIR=${T_SYSROOT}/xtools
+TEMP_STAGE_DIR=${T_SYSROOT}/source_stage
+# from project_config
+SOURCES_DIR=${dir_sources}
+PATCHES_DIR=${dir_patches}
+LOGS_ROOT=${dir_logs}/apps/stage2
+CONFIGS_DIR=${dir_configs}
+
+# fail the unit in the event of a non-zero value passed
+# used primarily to check exit codes on previous commands
+# also a great convenient place to add in a "press any key to continue"
+assert_zero() {
+	if [[ "$1" -eq 0 ]]; then 
+		return
+	else
+		exit $1
+	fi
+}
+
+ARCHLIB_DIR=${T_SYSROOT}/lib64
+PATH=${CROSSTOOLS_DIR}/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin