docker: Fix travis.py parser and misc change

Fixed the travis.py script that has failed to parse the current
QEMU_SRC/.travis.yml file. It no longer makes combinations from
env/matrix, instead it uses explicit includes. Also the compiler
can be omitted from matrix/include, so that Travis chooses the
first entry of the global compiler list.

Replaced yaml.load() with yaml.safe_load() so that quieting the
following deprecation warning:
https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation

Signed-off-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Message-Id: <20190320221207.11366-2-wainersm@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

1 files changed, 5 insertions, 6 deletions

diff --git a/tests/docker/travis.py b/tests/docker/travis.py
index ea1ef16..e143301 100755
--- a/tests/docker/travis.py
+++ b/tests/docker/travis.py
@@ -17,18 +17,17 @@ import yaml
 import itertools
 
 def load_yaml(fname):
-    return yaml.load(open(fname, "r").read())
+    return yaml.safe_load(open(fname, "r").read())
 
 def conf_iter(conf):
+    # If "compiler" is omitted from the included env then Travis picks the
+    # first entry of the global compiler list.
+    default_compiler = conf["compiler"][0]
     def env_to_list(env):
         return env if isinstance(env, list) else [env]
     for entry in conf["matrix"]["include"]:
         yield {"env": env_to_list(entry["env"]),
-               "compiler": entry["compiler"]}
-    for entry in itertools.product(conf["compiler"],
-                                   conf["env"]["matrix"]):
-        yield {"env": env_to_list(entry[1]),
-               "compiler": entry[0]}
+               "compiler": entry.get("compiler", default_compiler)}
 
 def main():
     if len(sys.argv) < 2: