Merge pull request #199300 from Fuuzetsu/escape-rust-exports

     EXTRA_LINK=$(sed -n "s/^cargo:rustc-link-lib=\(.*\)/\1/p" target/build/${crateName}.opt | tr '\n' ' ')

     EXTRA_LINK_SEARCH=$(sed -n "s/^cargo:rustc-link-search=\(.*\)/\1/p" target/build/${crateName}.opt | tr '\n' ' ' | sort -u)

     # We want to read part of every line that has cargo:rustc-env= prefix and

     # export it as environment variables. This turns out tricky if the lines

     # have spaces: we can't wrap the command in double quotes as that captures

     # all the lines in single output. We can't use while read loop because

     # exporting from inside of it doesn't make it to the outside scope. We

     # can't use xargs as export is a built-in and does not work from it. As a

     # last resort then, we change the IFS so that the for loop does not split

     # on spaces and reset it after we are done. See ticket #199298.

     #

     _OLDIFS="$IFS"

     IFS=$'\n'

     for env in $(sed -n "s/^cargo:rustc-env=\(.*\)/\1/p" target/build/${crateName}.opt); do

       export $env

       export "$env"

     done

     IFS="$_OLDIFS"

     CRATENAME=$(echo ${crateName} | sed -e "s/\(.*\)-sys$/\U\1/" -e "s/-/_/g")

     grep -P "^cargo:(?!(rustc-|warning=|rerun-if-changed=|rerun-if-env-changed))" target/build/${crateName}.opt \