[gnome-control-center] CI: print some info about the build env

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit f4433b3766bab48b85ae0e42e3e704bb7f380663
Author: Claudio André <claudioandre br gmail com>
Date:   Mon May 14 14:53:48 2018 -0300

    CI: print some info about the build env
    
    It is not possible to debug if the developer knows nothing about
    the CI running environment.

 .gitlab-ci.yml     | 19 ++++++++++++++++-
 tests/ci-helper.sh | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 516ae9577..6d17c8dab 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -18,13 +18,20 @@ build:
     expire_in: 3h30min
 
   script:
+    - echo "== Info =="
+    - tests/ci-helper.sh "INFO"
+    - tests/ci-helper.sh "GIT_INFO"
+
     - echo "== Building =="
     - meson . _build
-    - ninja -C _build
+    - ninja -C _build 2>&1 | tee compilation.log
 
     - echo "== Installing =="
     - ninja -C _build install
 
+    - echo "== Report =="
+    - tests/ci-helper.sh "WARNINGS"
+
 ##
 # Stage: Test
 #
@@ -32,10 +39,20 @@ build:
 ##
 test:
   stage: test
+  artifacts:
+    name: log
+    when: always
+    paths:
+    - $(pwd)/*.log
+
   dependencies:
     - build
 
   script:
+    - echo "== Info =="
+    - tests/ci-helper.sh "INFO"
+    - tests/ci-helper.sh "GIT_INFO"
+
     - |
       if [[ -n "${CI_COMMIT_TAG}" ]]; then
         echo "== Distro Test =="
diff --git a/tests/ci-helper.sh b/tests/ci-helper.sh
new file mode 100755
index 000000000..f8409dd21
--- /dev/null
+++ b/tests/ci-helper.sh
@@ -0,0 +1,61 @@
+#!/bin/bash -e
+
+function do_print_labels(){
+
+    if [[ -n "${1}" ]]; then
+        label_len=${#1}
+        span=$(((54 - $label_len) / 2))
+
+        echo
+        echo "= ======================================================== ="
+        printf "%s %${span}s %s %${span}s %s\n" "=" "" "$1" "" "="
+        echo "= ======================================================== ="
+    else
+        echo "= ========================= Done ========================= ="
+        echo
+    fi
+}
+
+function do_show_info(){
+
+    local compiler=gcc
+
+    echo -n "Processors: "; grep -c ^processor /proc/cpuinfo
+    grep ^MemTotal /proc/meminfo
+    id; uname -a
+    printenv
+    echo '-----------------------------------------'
+    cat /etc/*-release
+    echo '-----------------------------------------'
+
+    if [[ ! -z $CC ]]; then
+        compiler=$CC
+    fi
+    echo 'Compiler version'
+    $compiler --version
+    echo '-----------------------------------------'
+    $compiler -dM -E -x c /dev/null
+    echo '-----------------------------------------'
+}
+
+function do_check_warnings(){
+
+    cat compilation.log | grep "warning:" | awk '{total+=1}END{print "Total number of warnings: "total}'
+}
+
+# -----------  -----------
+if [[ $1 == "INFO" ]]; then
+    do_print_labels 'Build environment '
+    do_show_info
+    do_print_labels
+
+elif [[ $1 == "GIT_INFO" ]]; then
+    do_print_labels 'The Commit'
+    git log --pretty=format:"%h %cd %s" -1; echo
+    do_print_labels
+
+elif [[ $1 == "WARNINGS" ]]; then
+    do_print_labels 'Warnings Report '
+    do_check_warnings
+    do_print_labels
+fi