Add documentation check with doxygen

README.md

@@ -24,6 +24,7 @@ jobs:
         uses: ignition-tooling/ubuntu-ci-action@master
         with:
           codecov-enabled: true
+          doxygen-enabled: true
           cmake-args: '-DBUILD_TESTING=1'
 ```
 
@@ -107,3 +108,8 @@ build folder before exiting the script.
 The `cmake-args` can be used to pass additional CMake arguments to the build.
 If building with codecov is enabled, it is not possible to override the build type,
 which will always be `CMAKE_BUILD_TYPE=coverage`.
+
+### Doxygen
+
+Doxygen checks can be enabled with `doxygen-enabled: true`. This will make CI
+fail if there is code not documented properly.

action.yml

@@ -42,6 +42,10 @@ inputs:
     description: '(Deprecated) Bash script to be run after make test inside the build folder'
     required: false
     default: ''
+  doxygen-enabled:
+    description: 'Run doxygen documentation checks.'
+    required: false
+    default: ''
 runs:
   using: 'docker'
   image: 'Dockerfile'
@@ -51,3 +55,4 @@ runs:
     - ${{ inputs.codecov-token-private-repos }}
     - ${{ inputs.codecov-token }}
     - ${{ inputs.cmake-args }}
+    - ${{ inputs.doxygen-enabled }}

entrypoint.sh

@@ -1,4 +1,4 @@
-#!/bin/sh -l
+#!/bin/bash -l
 
 set -x
 set -e
@@ -8,6 +8,7 @@ CODECOV_ENABLED=$2
 CODECOV_TOKEN_PRIVATE_REPOS=$3
 DEPRECATED_CODECOV_TOKEN=$4
 CMAKE_ARGS=$5
+DOXYGEN_ENABLED=$6
 
 # keep the previous behaviour of running codecov if old token is set
 [ -n "${DEPRECATED_CODECOV_TOKEN}" ] && CODECOV_ENABLED=1
@@ -23,6 +24,7 @@ apt -y install \
   cmake \
   cppcheck \
   curl \
+  doxygen \
   g++-8 \
   git \
   gnupg \
@@ -137,6 +139,13 @@ else
 fi
 echo ::endgroup::
 
+if [ -n "$DOXYGEN_ENABLED" ] && ${DOXYGEN_ENABLED} ; then
+  echo ::group::Documentation check
+  make doc 2>&1
+  bash <(curl -s https://raw.githubusercontent.com/ignitionrobotics/ign-cmake/ign-cmake2/tools/doc_check.sh)
+  echo ::endgroup::
+fi
+
 if [ -f "$SCRIPT_BETWEEN_CMAKE_MAKE" ] || [ -f "$SCRIPT_BETWEEN_CMAKE_MAKE_VERSIONED" ] ; then
   echo ::group::Script between cmake and make
   if [ -f "$SCRIPT_BETWEEN_CMAKE_MAKE" ] ; then