Support zsh as shell

Signed-off-by: Faholan <[email protected]>

Author: Faholan

dev_env.sh

@@ -3,7 +3,7 @@
 # Set developer paths and environment variables here,
 # user settings go in ./env.sh
 function __setpaths() {
-    local DIR=$(readlink -f "$(dirname "${BASH_SOURCE[0]}")")
+    local DIR=$(readlink -f "$(dirname "${BASH_SOURCE[0]:-${(%):-%x}}")")
     [ "$(find $DIR/dependencies -type f -user root)" ] && echo "WARNING! Files set up by sudo found in $DIR"
     export PATH="$DIR/dependencies/bin:$PATH"
     export CMAKE_INSTALL_RPATH=$DIR/dependencies/lib:$DIR/dependencies/lib64

env.sh

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 function __setpaths() {
   if [[ "$OSTYPE" == "darwin"* ]]; then
-    DIR="$(dirname $(perl -e 'use Cwd "abs_path";print abs_path(shift)' "${BASH_SOURCE[0]}"))"
+    DIR="$(dirname $(perl -e 'use Cwd "abs_path";print abs_path(shift)' "${BASH_SOURCE[0]:-${(%):-%x}}"))"
   else
-    DIR="$(dirname $(readlink -f "${BASH_SOURCE[0]}"))"
+    DIR="$(dirname $(readlink -f "${BASH_SOURCE[0]:-${(%):-%x}}"))"
   fi
 
   export OPENROAD=${DIR}/tools/OpenROAD