dependency_support/com_icarus_iverilog: fix scripts for cocotb tests

Author: proppy

dependency_support/com_icarus_iverilog/iverilog.sh

@@ -22,8 +22,10 @@ dir="$0.runfiles/com_icarus_iverilog"
 vvp_dir="${0/%iverilog/vvp}.runfiles/com_icarus_iverilog"
 
 if [[ ! -d "$dir" ]]; then
-  echo "Unable to find dependencies (looking under $dir)." 1>&2
-  exit 1
+  dir=$(dirname $0)  # use current directory it not launched directly from the :iverilog target.
+fi
+if [[ ! -d "$vvp_dir" ]]; then
+  vvp_dir=$(dirname $0)  # use current directory it not launched directly from the :iverilog target.
 fi
 
 exec "$dir/iverilog-bin" -B"$dir" -BM"$vvp_dir" -DIVERILOG "$@"

dependency_support/com_icarus_iverilog/vvp.sh

@@ -19,10 +19,8 @@
 set -eu
 
 dir="$0.runfiles/com_icarus_iverilog"
-
 if [[ ! -d "$dir" ]]; then
-  echo "Unable to find dependencies (looking under $dir)." 1>&2
-  exit 1
+  dir=$(dirname $0)  # use current directory it not launched directly from the :vvp target.
 fi
 
 exec "$dir/vvp-bin" -M"$dir" "$@"