TL;DR: Building Apache Atlas from source produces the binaries and all hooks in separate tar files inside the distro/target/
folder.
As stated in the apache atlas github page, the hooks are built along with the atlas binaries during the atlas build process. I've copied the relevant README information, particularly number 3:
Build Process
- Get Atlas sources to your local directory, for example with following commands
$ cd <your-local-directory>
$ git clone https://github.com/apache/atlas.git
$ cd atlas
# Checkout the branch or tag you would like to build
#
# to checkout a branch
$ git checkout <branch>
# to checkout a tag
$ git checkout tags/<tag>
- Execute the following commands to build Apache Atlas
$ export MAVEN_OPTS="-Xms2g -Xmx2g"
$ mvn clean install
$ mvn clean package -Pdist
- After above build commands successfully complete, you should see the following files
distro/target/apache-atlas-<version>-bin.tar.gz
distro/target/apache-atlas-<version>-hbase-hook.tar.gz
distro/target/apache-atlas-<version>-hive-hook.tar.gz
distro/target/apache-atlas-<version>-impala-hook.tar.gz
distro/target/apache-atlas-<version>-kafka-hook.tar.gz
distro/target/apache-atlas-<version>-server.tar.gz
distro/target/apache-atlas-<version>-sources.tar.gz
distro/target/apache-atlas-<version>-sqoop-hook.tar.gz
distro/target/apache-atlas-<version>-storm-hook.tar.gz
distro/target/apache-atlas-<version>-falcon-hook.tar.gz