CGAL users discussion list

[Manfred Kuhnkies <>]

Hello Sebastien,

Thanks for your reply. I did what you asked me to do.

And it seems to me even more strange now:

I backed up PATHs of four windows installations
(2x win7x64 native; 1x win7 x64 and 1x win8 x64 as virtual machines),
each of which having a different software environment, different users
(local users, network users) and different PATHs and performed install
of CGAL 4.2 on all four machines; twice on some of them:


In the installer GUI

I used drive C:\ on some (not having other drives) and where available
also a different drive than C:\.
I chose to install 64-bit libs
I selected changes to apply for all users.
I allowed adding CGAL_DIR and I allowed ADDING gmp lib to PATH.


The result:
One of the two native Win7x64: PATH was replaced, as I had said.
(tested twice. for C:\ and for F:\ as install target)
On the other three machines: PATH was added, as you said.

Really strange. Hence I understand that you couldn't reproduce the problem.


Unfortunately, this one machine is my own one (and it's the only one
that has NSIS installed to build my own setups) and more involved in
building software than the others... but


As Xy Liu had pointed out yesterday, I agree that paths to developer
libraries shouldn't be added to the global Windows system PATH, at least
not on "multi-compiler" machines.
Usually I append PATH just temporarily for each command shell, because I
have different 32-bit and 64-bit C++ compilers installed (MinGW g++ and
several MS VS Versions), all of which I use -- to build the same
projects. My experience on Monday was when doing a "quick" test...

So the mentioned "strange behaviour" is not really of concern to me; I
just wanted to report that there possibly might be a bug. Installer
experience is sort of first impression of a software a user gets, so I
wanted to help anyway. Restoring Windows PATH can be little fun, you know.

Thanks anyway and best
   Manfred




Am 28.05.2013 19:12, schrieb Sebastien Loriot (GeometryFactory):
> This is very strange, I just tried on Windows7x64 and it is working fine.
> 
> Could you try again to be sure it is related to the installation of CGAL?
> (backup you path env before trying)
> 
> Sebastien.
> 
> On 05/27/2013 05:09 PM, Manfred Kuhnkies wrote:
>> I just encountered a problem with the installer of CGAL 4.2 on Windows
>> 7 x64
>> concerning the windows environment variable PATH. CGAL Installer
>> replaced PATH
>> by auxiliary\gmp\lib instead of adding the latter to PATH.