travis: workaround env pollution, PYTHON_CFLAGS

Since a few days travis workers seem to export broken PYTHON_CFLAGS
and automake's python detection fails.

see https://github.com/travis-ci/travis-ci/issues/5301

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>

diff --git a/.travis.yml b/.travis.yml
index 6d322e45765ec7b5771a923b55adcba22941301d..85a753d39f8e5b8d11dd3d804a61ae060cc740e6 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,6 +23,8 @@ before_install:
   - which $CC
   # workaround clang not system wide, fail on sudo make install
   - export CC=`which $CC`
+  # workaround travis-ci issue #5301
+  - unset PYTHON_CFLAGS
 
 install:
   - source ./.travis-functions.sh