Support compiling dependencies from source (#7)

* Add script hooks

Signed-off-by: Louise Poubel <[email protected]>

README.md

@@ -31,8 +31,19 @@ jobs:
           script-after-make-test: after_make_test.sh
 ```
 
+### Dependencies
+
 Be sure to put all apt-installable dependencies into `apt-dependencies`.
 
+If you need to install dependencies from source, add a Vcstool yaml file to
+`.github/ci-bionic/dependencies.yaml`. Dependencies will be built using
+`colcon`. Be sure to add the apt dependencies of dependencies build from source
+to `apt-dependencies`.
+
+### Codecov
+
 Create a secret on the repository with Codecov's token, called `CODECOV_TOKEN`.
 
+### Custom scripts
+
 The `script-`s are optional hooks that you can run at specific times of the build.

entrypoint.sh

@@ -22,7 +22,11 @@ apt -y install \
   curl \
   g++-8 \
   git \
-  cppcheck
+  cppcheck \
+  python3-pip \
+  $APT_DEPENDENCIES
+
+pip3 install -U pip vcstool colcon-common-extensions
 
 update-alternatives \
   --install /usr/bin/gcc gcc /usr/bin/gcc-8 800 \
@@ -36,7 +40,14 @@ cd ..
 
 sh tools/code_check.sh
 
-apt -y install $APT_DEPENDENCIES
+if [ -f ".github/ci-bionic/dependencies.yaml" ] ; then
+  mkdir -p deps/src
+  cd deps
+  vcs import src < ../.github/ci-bionic/dependencies.yaml
+  colcon build --symlink-install --merge-install --cmake-args -DBUILD_TESTING=false
+  . install/setup.sh
+  cd ..
+fi
 
 mkdir build
 cd build