[gtk-doc] Tweak the ci config.

[Stefan Sauer <stefkost src gnome org>]

commit 1ebcc9d518fe5faf9a9fbb93521be4a746973998
Author: Stefan Sauer <ensonic users sf net>
Date:   Thu Dec 13 21:50:36 2018 +0100

    Tweak the ci config.

 .gitlab-ci.yml | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4c0d872..681e907 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@ image: debian:unstable
 
 before_script:
   - apt update -qq
-  - apt install -y -qq autoconf automake build-essential pkg-config
+  - apt install -y -qq autoconf automake build-essential libtool make pkg-config
                        libxml2-utils xsltproc
                        python3-lxml python3-parameterized python3-pip
                        python3-pygments python3-unittest2
@@ -25,7 +25,7 @@ test:
   stage: test
   script:
     - make check
-    - cd test && make coverage
+    - make -C tests coverage
     - cd test && python3-coverage report --include="*/gtkdoc/*.py"
   coverage: '/^TOTAL\s+[\d\s]*?\s+([\d.]+\%)\s+/'
 
@@ -36,7 +36,7 @@ pages:
   script:
     - ./autogen.sh --prefix=/usr
     - make
-    - cd test && make coverage
+    - make -C tests coverage
     - mkdir -p public/
     - mv tests/htmlcov public/
   artifacts: