add extra case for ../

Author: jgautier-dd

toolchain/osx_cc_wrapper.sh.tpl

@@ -57,7 +57,7 @@ function parse_option() {
 if [[ -f %{toolchain_path_prefix}bin/clang ]]; then
   execroot_path=""
   execroot_abs_path="${PWD}/"
-elif [[ ${BASH_SOURCE[0]} == "/"* ]]; then
+elif [[ ${BASH_SOURCE[0]} == "/"* ]] || [[ ${BASH_SOURCE[0]} == "../"* ]]; then
   # Some consumers of `CcToolchainConfigInfo` (e.g. `cmake` from rules_foreign_cc)
   # change CWD and call $CC (this script) with its absolute path.
   # For cases like this, we'll try to find `clang` through an absolute path.