Try resolve the OSX issue
# Build at a known-good commit
COMMIT_ID=3fdf6a54c4c0762226afcbabda3b2016af5a8761
+whereis openssl
+
cd ..
# git clone --branch master --single-branch --shallow-submodules --recurse-submodules --no-tags https://github.com/h2o/picotls
git clone https://github.com/h2o/picotls
