[ci] first test

.gitlab-ci.yml

+---
+variables:
+  DUNECI_OPTS: "/builds/dune-fem-dg/dune-fem-dg/scripts/opts/ci-gcc.opts"
+
+before_script:
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-common.git
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-geometry.git
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-grid.git
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-istl.git
+  - duneci-install-module https://gitlab.dune-project.org/core/dune-localfunctions.git
+  - duneci-install-module https://gitlab.dune-project.org/extensions/dune-alugrid.git
+  - duneci-install-module https://gitlab.dune-project.org/extensions/dune-spgrid.git
+  - duneci-install-module https://gitlab.dune-project.org/dune-fem/dune-fem.git
+
+#debian:9--gcc:
+#  image: duneci/base:9
+#  script: duneci-standard-test --opts=/builds/dune-fem-dg/dune-fem-dg/scripts/opts/ci-gcc.opts
+#
+#debian:9--clang:
+#  image: duneci/base:9
+#  script: duneci-standard-test --opts=/builds/dune-fem-dg/dune-fem-dg/scripts/opts/ci-clang.opts
+
+#debian:8--gcc:
+#  image: duneci/base:8
+#  script: duneci-standard-test --opts=/builds/dune-fem-dg/dune-fem-dg/scripts/opts/ci-gcc.opts
+
+#debian:8-backports--clang:
+#  image: duneci/base:8-backports
+#  script: duneci-standard-test --opts=/builds/dune-fem-dg/dune-fem-dg/scripts/opts/ci-clang.opts
+
+ubuntu:16.04--gcc:
+  image: duneci/base:16.04
+  script: duneci-standard-test --opts=/builds/dune-fem-dg/dune-fem-dg/scripts/opts/ci-gcc.opts
+
+#ubuntu:16.04--clang:
+#  image: duneci/base:16.04
+#  script: duneci-standard-test --opts=/builds/dune-fem-dg/dune-fem-dg/scripts/opts/ci-clang.opts
+#
+#debian:9--gcc--petsc:
+#  image: registry.dune-project.org/dune-fem/dune-fem/ci-petsc:9
+#  script: duneci-standard-test --opts=/builds/dune-fem-dg/dune-fem-dg/scripts/opts/ci-gcc.opts

scripts/opts/ci-clang.opts

+CMAKE_FLAGS="
+  -DCMAKE_CXX_COMPILER='/usr/bin/clang++' \
+  -DCMAKE_C_COMPILER='/usr/bin/clang' \
+  -DCMAKE_CXX_FLAGS='-Wall -O1 -ftemplate-backtrace-limit=0' \
+  -DDUNE_GRID_GRIDTYPE_SELECTOR=ON \
+  -DDUNE_GRID_EXPERIMENTAL_GRID_EXTENSIONS=TRUE \
+"

scripts/opts/ci-gcc.opts

+CMAKE_FLAGS="
+  -DCMAKE_CXX_FLAGS='-Wall -Winit-self -O1' \
+  -DDUNE_GRID_GRIDTYPE_SELECTOR=ON \
+  -DDUNE_GRID_EXPERIMENTAL_GRID_EXTENSIONS=TRUE \
+"