generate: provide an error message when distgen binary not available

lukaszachy · Jun 4, 2018 · 82aaf71 · 82aaf71
1 parent ddb342c
commit 82aaf71
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/generate.sh b/generate.sh
@@ -22,8 +22,12 @@ nl='
 '
 
 test -f auto_targets.mk && rm auto_targets.mk
+DG="${DG-/bin/dg}"
+[ ! -x "$DG" ] && echo "  Error: distgen binary not found or not executable in $DG" && \
+echo "    Make sure distgen is properly installed on your host in $DG, or provide a path to your distgen binary via \$DG" && exit 1
+
+DISTGEN_COMBINATIONS=$("$DG" --multispec specs/multispec.yml --multispec-combinations)
 
-DISTGEN_COMBINATIONS=$(${DG-/bin/dg} --multispec specs/multispec.yml --multispec-combinations)
 
 clean_rule_variables(){
     src=""