Upgrading MozJS

Follow these steps to upgrade MozJS. This is supposed to work on minor updates of MozJS ESR 91.

Note: You first need to prepare the MozJS repo and make sure that you have an upgraded branch under the mongodb-forks/spidermonkey repo.

Step 1: Update the MozJS version

Edit get-sources.sh and update the LIB_GIT_REVISION variable with the branch name of the new version of MozJS.

Step 2: Make sure you have autoconf2.13 installed.

Check whether you have autoconf2.13 installed by running either of the autoconf2.13 --version, autoconf213 --version or autoconf-2.13 --version commands depending on your target platform.

If not installed, you can install it like this:

On Linux:

sudo apt-get install autoconf2.13

On macOS:

brew install [email protected]

On other platforms (build from source):

wget ftp://ftp.gnu.org/gnu/autoconf/autoconf-2.13.tar.gz
tar -xf autoconf-2.13.tar.gz
cd autoconf-2.13
./configure --prefix=$HOME/local
make
make install
cp $HOME/local/bin/autoconf $HOME/local/bin/autoconf2.13
PATH="$PATH:$HOME/local/bin"
export PATH

Step 2: Checkout the branch of mongo repository used for MozJS upgrade

cd $HOME
git clone [email protected]:10gen/mongo.git
cd mongo
git checkout -b  <your_branch_name> origin/<your_branch_name>

Step 3: Get MozJS sources

cd $HOME/mongo/src/third_party/mozjs
rm -rf mozilla-release
./get-sources.sh

Step 4: Extract MozJS sources

cd $HOME/mongo/src/third_party/mozjs
rm -rf extract include
./extract.sh

Step 5: Generate platform-specific code

Run one of the following invocations of the 'gen-config.sh' script for your target platform:

Linux (x86_64)

cd $HOME/mongo/src/third_party/mozjs
./gen-config.sh x86_64 linux

macOS (x86_64)

cd $HOME/mongo/src/third_party/mozjs
# ./gen-config.sh x86_64 macOS

Windows (x86_64)

cd $HOME/mongo/src/third_party/mozjs
# ./gen-config.sh x86_64 windows

Linux (aarch64)

cd $HOME/mongo/src/third_party/mozjs
# ./gen-config.sh aarch64 linux

macOS (aarch64)

cd $HOME/mongo/src/third_party/mozjs
# ./gen-config.sh aarch64 macOS

Linux (ppc64le)

cd $HOME/mongo/src/third_party/mozjs
# ./gen-config.sh ppc64le linux

Linux (s390x)

cd $HOME/mongo/src/third_party/mozjs
# ./gen-config.sh s390x linux

You need to run through all of these steps once for each supported platform.