In the original util.cmake. enable_virtualenv.c is always regenerated when cmake files are changed, which leads to the relinking of all the targets depends on paddle_utils.
For multiple installation of paddle, there might be multiple versions of python package at opt/paddle/share/wheels/. We should install the right version.
Ideally, we should remove the wrong versions when install. But it's not easy to do this with cmake.
Change-Id: Ida8a8d60643ad9e42cf1c85776de9122d5ba1392
* install wheels when invoke paddle script if current python don't
have paddle packages, or installed a previous version.
* Also add `make install` to travis
tensor-tang
Yancey
武毅
xuwei06
qiaolongfei
Luo Tao
Helin Wang
zhouyingfeng
liaogang
Yu Yang
emailweixu
zhangjinchao01