util: make sure FLOW_HOME is set once

Signed-off-by: Vitor Bandeira <[email protected]>

Author: vvbandeira

flow/util/generate-vars.sh

@@ -7,11 +7,13 @@ ORFS_ROOT=$(realpath "${FLOW_HOME}/../")
 # exclude system and CI variables
 EXCLUDED_VARS="MAKE|MAKEFLAGS|PERL5LIB|QT_QPA_PLATFORM"
 EXCLUDED_VARS+="|RESULTS_ODB|PUBLIC|ISSUE_SCRIPTS"
-EXCLUDED_VARS+="|HOME|PWD|MAIL|SHELL|NPROC|NUM_CORES"
+EXCLUDED_VARS+="|HOME|PWD|MAIL|SHELL|NPROC|NUM_CORES|FLOW_HOME"
 EXCLUDED_VARS+="|UNSET_VARIABLES_NAMES|do-step|get_variables|do-copy"
 
 EXCLUDED_PATTERNS="_EXE$|PATH$|_CMD$|\."
 
+echo 'export FLOW_HOME=${FLOW_HOME:-$(pwd)}' > $1.sh
+
 while read -r VAR; do
     if [[ ${VAR} != *"="* ]] ; then
         # skip variables that do not have an equal sign