From 2b8d287d551af6d015c0b802aa50fcf33f4ce538 Mon Sep 17 00:00:00 2001
From: Eugene Kim <ek@harmony.one>
Date: Thu, 21 Mar 2019 16:49:14 -0700
Subject: [PATCH] Honor HMY_PATH if set

---
 scripts/setup_bls_build_flags.sh | 22 +++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/scripts/setup_bls_build_flags.sh b/scripts/setup_bls_build_flags.sh
index e5af7f57d..13d4f4695 100644
--- a/scripts/setup_bls_build_flags.sh
+++ b/scripts/setup_bls_build_flags.sh
@@ -6,15 +6,19 @@ case "${0}" in
 *) progdir=.;;
 esac
 
-unset -v gopath
-gopath=$(go env GOPATH)
-# HMY_PATH is the common root directory of all harmony repos
-HMY_PATH="${gopath%%:*}/src/github.com/harmony-one"
-if [ ! -d $HMY_PATH ]; then
-   # "env pwd" uses external pwd(1) implementation and not the Bash built-in,
-   # which does not fully dereference symlinks.
-   HMY_PATH=$(cd $progdir/../.. && env pwd)
-fi
+case "${HMY_PATH+set}" in
+"")
+   unset -v gopath
+   gopath=$(go env GOPATH)
+   # HMY_PATH is the common root directory of all harmony repos
+   HMY_PATH="${gopath%%:*}/src/github.com/harmony-one"
+   if [ ! -d $HMY_PATH ]; then
+      # "env pwd" uses external pwd(1) implementation and not the Bash built-in,
+      # which does not fully dereference symlinks.
+      HMY_PATH=$(cd $progdir/../.. && env pwd)
+   fi
+   ;;
+esac
 : ${OPENSSL_DIR="/usr/local/opt/openssl"}
 : ${MCL_DIR="${HMY_PATH}/mcl"}
 : ${BLS_DIR="${HMY_PATH}/bls"}